component focus: pages 2-12 design note: page 13 · component focus: pages 2-12 ... energy...

Component Focus: pages 2-12 Wolfson Microelectronics’ Audio Hub enables always-on voice control without sacrificing battery life

Design Note: page 13 How provision of a remote device-managementservice affects lifetime cost of cellular modems

Application Spotlight: pages 14-21 100Mbits/s download rate from the latest SierraWireless LTE module for M2M communication

Technical View: pages 22-23 Comparing integrated power modules for the latestgeneration of efficient pump motors

Application Spotlight on

Connectivityand the Internet of Things

Future Electronics to distributeCrocus Technology productsgloballyFuture Electronics has signed a distributionagreement with Crocus Technology, adeveloper of magnetically-enhancedsemiconductor technologies for mobilesecurity, embedded microcontrollers,magnetic sensors and applications used inharsh environments.

Crocus Technology’s Magnetic Logic Unit™

(MLU™) technology for non-volatile memorieshelps to enhance the performance andsecurity of chips for smart cards, mobilephones and data servers.

Cost-saving system-managementdesign for e-bike batteriesams has introduced an example design forlithium pedelec and e-bike batteries whichimplements accurate cell monitoring andbalancing without the need for amicrocontroller in the Battery ManagementSystem (BMS).

The design, using two AS8506 cell-monitoring ICs, produces valuable bill-of-materials cost savings and a simpler circuitdesign, compared to BMS in productiontoday.

PFC controller allows use ofsmaller passive componentsFairchild Semiconductor has announced therelease of the FAN9673, an interleavedcontinuous conduction-mode high-powerPFC controller which uses the smallestpossible inductors and low-rated switchingdevices, while extending the lifetime of thepower circuit’s capacitors.

The FAN9673 can easily switch betweenone-, two- and three-channel operation withgood phase management. The device alsofeatures a differential current-sensing resistorand configurable output-voltage control,enabling an easy, compact, cost-effectivedesign for PFC applications up to 9kW.

New bus converters for telecomsequipmentCUI Inc., has introduced its second-generation high-density isolated intermediatebus converter family, called the NQBSseries. The new devices address the risingpower requirements and efficiency demandsof telecom systems and data centres.

Housed in a quarter-brick package, theNQBS modules provide a power density of27.2W/cm3, and are up to 96% efficient.

S T A R P R O D U C T

2 EMAIL [email protected] FOR SAMPLES AND DATASHEETS

©Copyright 2014 Future Electronics Ltd. All trademarks contained herein are theproperty of their respective owners. Applications for product samples, badgeboards, demonstration boards, Future Electronics’ boards and other advertisedmaterials from Future Electronics are offered subject to qualification.

Cypress Semiconductor has announceda new family of CapSense® controllerswhich enable engineers to quicklyimplement sleek capacitive buttons,sliders and proximity sensors thatoperate robustly even in difficultconditions.

The new CY8CMBR3x controllers provide betterperformance in parameters such as watertolerance and proximity sensing than anyprevious touch-sensing controller, but imposeno requirement on the user to develop code orfirmware.

The CY8CMBR3x controllers are part ofCypress’s Mechanical Button Replacement (MBR)family, which uses the company’s SmartSense™

Auto-Tuning algorithm to completely eliminatethe requirement for manual system tuning.SmartSense Auto-Tuning enables automatictuning of more than 10 parameters to producethe best possible touch-sensing performance.

The controllers are supported by Cypress'sEZ-Click™ software tool, which combines GUI-based configuration and product debuggingwith support for production-line testing, whilerequiring no firmware development.

The controllers offer two implementationoptions, supporting up to 16 capacitive buttons,or up to 8 capacitive buttons while driving up toeight LEDs.

Designs using the CY8CMBR3x controllerscan also realise one or two proximity sensorswith a 30cm sensing range, supporting a ‘wakeon approach’ function. Additionally, thecontrollers feature flanking sensor suppression,which eliminates false touches in designs withclosely-spaced buttons.

Devices in the CapSenseMBR family offer robustsensing in noisyenvironments, benefittingfrom Cypress's patentedCapSense sigma-deltasensing method. Thisprovides high immunity toconducted and radiatednoise, and offers a signal-to-noise ratio of greaterthan 100:1.

The controllers alsofeature an integratedvoltage regulator to filterout power-supply noise,and additional filters forspurious noise.

The CY8CMBR3xdevices are available in 8-,16- and 24-pin versions.

CYPRESS SEMICONDUCTOR

APPLICATIONS• Consumer electronics• Automotive• Home appliances• Industrial equipment• Medical and fitness devices

FEATURES• Supports overlay thickness of up to

15mm for glass or 5mm for plastic • I2C slave interface• Deep Sleep mode for power saving• Operating voltage range: 1.71V to 5.5V

SECURITYAUTOMOTIVEMEDICALLIGHTINGINDUSTRIALENERGY CONSUMER TELECOMMS

N E W S I N B R I E F

STARPRODUCT

Apply now at my-boardclub.comFast-track board request code: FTM45A

For samples or pricing [email protected]

Capacitive-sensing applicationsThe CY3280-MBR3 CapSense® MBR3 Evaluation Kithelps designers to evaluate the third generation ofCypress Semiconductor’s capacitive-sensingtechnology. It can be used to develop CapSense buttondesigns, and to implement proximity sensing. See page21 for further details.

Orderable Part Number: CY3280-MBR3

FREEBOARDS

Cypress CapSense controllers: SmartSense algorithm helps optimise button designs

New CapSense controllers offerindustry-best noise immunity, proximitysensing and water tolerance

140502:

For more information [email protected]:

C O M P O N E N T F O C U S

3VISIT THE ONLINE FTM MAGAZINE AT: WWW.MY-FTM.COM

Tiny 150mA LDO offers highly accurate output voltage

The AP7340, a 150mA LDO linearregulator from Diodes Inc., providesdesigners with outstanding voltageaccuracy, maintaining its output to within±1.5% of its nominal value over theentire operating ambient temperaturerange of -40°C to 85°C.

The AP7340 is ideal for any space-constrainedapplication which is sensitive to power-supplynoise, such as RF transceivers and audio andvideo playback devices. It offers a high power-supply rejection ratio of 75dB at 1kHz, andkeeps voltage ripple to a low 60µVrms over the10Hz to 100kHz range.

The device is housed in a 1.0mm x 1.0mmDFN1010-4 package, making it suitable forvery high-density portable product designs.

It produces a 150mA output current across awide input-voltage range of 1.7V to 5.25V.

It comprises a voltage reference, error amplifier,current limit and an Enable input for On/Offcontrol of the output. Featuring an integratedresistor network, the device is available withany one of 11 fixed output voltages between1.2V and 3.3V.

The AP7340 draws a typical quiescentcurrent of just 35µA, helping to reduce systempower consumption.

New ARM Cortex-M3 MCU enablessimultaneous control of multiple motors

DIODES INCORPORATED

NXP SEMICONDUCTORS

APPLICATIONS• RF power supplies• Digital still cameras • Portable video cameras• Portable media players • Wireless adapters • Wireless communications devices

FEATURES• ±30ppm/°C output-voltage temperature

co-efficient• 400mW maximum power dissipation


APPLICATIONS• Motor drives• Digital power supplies• Solar inverters• Home appliances• Building and factory automation

FEATURES• ADCs perform conversions in 500ns• PWM modules offer average resolution

of <1ns • 68ns comparator propagation delay • CAN module • GUI-based calibration/tuning tools


Vishay’s VOW3120: page 12PARTNERWORKING


Motor-control and digital-power applicationsThe LPC1549 LPCXpresso™ includes a standard 10-pinJTAG/SWD connector plus analogue/digital expansionheaders, making it a highly extensible platform. Headersconforming to the LPCXpresso™, Arduino UNO and PMODstandards enable the use of existing peripheral boards. Orderable Part Number: OM13056UL

FREEBOARDS

Diodes’ AP7340: accepts input voltages ranging from 1.7V to 5.25V

The LPC1500 MCUs are ideallysuited to the control of theBrushless DC (BLDC) motors,permanent-magnet synchronousmotors and AC induction motorscommonly found in large home appliances,industrial pumps and generators, ventilationequipment and elsewhere. They are also idealfor high-precision data sampling and real-timecontrol.

Based on the ARM® Cortex™-M3 processor,the LPC1500 MCUs include two 12-bit, 12-

channel, 2Msamples/s ADCs and an on-chipquadrature encoder interface. Thiscombination helps to support the simultaneouscontrol of multiple motors in any combinationof sensored or sensorless.

In addition, four on-chip comparatorsprovide for a fast response to over-current andover-voltage events. Four flexible timers

provide up to 28 PWM channels in a tightly-coupled analogue and timing sub-

system which imposes a minimalload on the processor core.

To simplify the development ofmotion-control applications, the

LPC1500 MCUs are equippedwith firmware, which demonstrates

sensored and sensorless motion-control functions. The firmware uses

a fast Field Oriented Control (FOC)algorithm and a proportional-integral loopcontroller to maintain speed and torque, andto minimise code footprint.

Feature* LPC1517 LPC1518 LPC1519 LPC1547 LPC1548 LPC1549

Flash (kbyte) 64 128 256 64 128 256SRAM (kbyte) 12 20 36 12 20 36Full-speed USBwith PHY – – – 1 1 12MHz ADC(bit/channel) 2 x 12/12 2 x 12/12 2 x 12/12 2 x 12/12 2 x 12/12 2 x 12/12

Packages LQFP48/64 LQFP64/100 LQFP64/100 LQFP48/64 LQFP64/100 LQFP48/64/100*Common features: CAN, I2C, SPI, UART, four SCTimer/PWMs, four comparators, 12-bit DAC, QEI, CRC engine

NXP Semiconductors has introducedthe LPC1500 series of microcontrollers,which include all the features requiredfor accurate sensored and sensorlessmotor control systems. The newdevices enable the simultaneouscontrol of multiple motors inflexible configurations.

For samples or pricing [email protected]:




850nm IR emitter produces high 660mW outputBased on Vishay’s SurfLight™ surface emitterchip technology, the VSMY98545 can operatewith a high continuous drive current of up to1A, safely dissipating waste heat due to its lowthermal resistance of 10K/W, junction-to-pin.

An integrated lens provides for a ±45° angleof half-intensity, resulting in very high radiantintensity of 350mW/sr at a 1A drive current,and 1600mW/sr at 5A, pulsed. This is morethan double the radiant intensity of devices withno lens.

This means that theVSMY98545 can replacemultiple standardsurface-mount devices,allowing designers toreduce component countand cost, save boardspace and improveperformance.

The emitter can beswitched in intervals asshort as 15ns. It is ratedfor operation at ambienttemperatures from -40°Cto 95°C.

The VSMY98545 ishoused in a 3.85mm x3.85mm x 2.24mmsurface-mount package.

VISHAY

APPLICATIONS• Infra-red illumination for CMOS cameras • 3D gaming• Machine vision• 3D TVs• Long-range proximity detection

FEATURES• 1.8V forward voltage at 1A drive current• 660mW radiant power at 1A drive current• 30nm spectral bandwidth


200mA LDO provides clean voltage for sensitiveRF circuits

ON Semiconductor has introduced theNCP700B, a 200mA LDO linear voltageregulator which provides a very stable,accurate voltage suitable for RF andother noise-sensitive applications.

The NCP700B is produced in an advancedBiCMOS process: this combines the benefitsof the low noise and superior dynamicperformance of bipolar elements with very lowground current at full load, a characteristic ofON Semiconductor’s CMOS process. Thislow-power operation makes the NCP700Bsuitable for battery-powered devices, while itshigh power-supply rejection ratio filters outnoise to leave extremely low residual levels ofvoltage ripple.

The device is stable with small capacitorsproviding capacitance values as low as 1µF.This helps to reduce the total board footprintof a power-supply design. The NCP700B itselfis available in a 1.5mm x 1.5mm WDFN6package, and also in a TSOP-5.

A similar 200mA LDO available from ON Semiconductor is the NCP702. Ideal forbattery-operated portable applications, theNCP702 uses an adaptive ground-currentfeature, reducing power consumption whensupplying light loads.

This device also requires no additionalnoise-bypass capacitor to achieve ultra-lownoise performance.

NCP700B: tiny package suitable for use in densely populated boardassemblies

ON SEMICONDUCTOR

APPLICATIONS• Camera-module power supplies• Precision instrumentation• Power supplies for audio, video and RF

functional blocks• Noise-sensitive applications • Battery-powered devices

FEATURES (NCP700B)• Input voltage range: 2.5V to 5.5V • 82dB typical ripple rejection ratio at 1kHz • 10µV typical output noise from 10Hz to

100kHz • Output voltage options:

1.8V, 2.8V, 3.0V and 3.3V• 1µA maximum current in Sleep mode • Current-limit protection• Thermal shut-down protection


Vishay Intertechnology has released theVSMY98545, an 850nm Infra-Red (IR)emitter with very high optical power,enabling designers to replace multipleemitters that have a weaker output withone VSMY98545.





Mid-power LED drivers offer stable, accurateoutput current

NXP Semiconductors has released anew family of mid-power LED driverswhich provide a stable and accurateconstant-current output for LEDs used inautomotive applications such asdashboards, infotainment units andcabin lighting.

They are also suitable for use inindustrial applications and homeappliances.

The NCR405U, NCR402U andNCR401U LED drivers consist of aresistor-equipped PNP transistorwith two diodes on one chip. Eachis housed in an SOT457 (SC-74)plastic package measuring 2.9mmx 2.5mm x 1.1mm.

Rated for input voltages up to40V, the devices are specified foran LED drive current of 50mA(NCR405U), 20mA (NCR402U) or10mA (NCR401U).

Rugged DC-DC converters operate across wideinput voltage range

CUI’s VHK series of DC-DC converters feature a built-in heat-sink

NXP SEMICONDUCTORS

CUI INC

APPLICATIONS• Constant-current LED driver• Generic constant-current source

FEATURES• AEC-Q101 qualified• 750mW power dissipation capability• Stabilised output current adjustable up to

65mA with an external resistor


APPLICATIONS• High-reliability applications• Battery-powered devices• Communications equipment• Industrial equipment• Transportation

FEATURES• Over-current protection• Over-temperature protection• Input-transient protection• Short-circuit protection • 1,500V DC isolation


NXP automotive LED drivers provide a highly accurate output current

The devices maintain high drive-currentaccuracy across the input-voltage range, thecurrent changing by a typical 1% with every 1Vchange in the power supply.

Absolute current accuracy is also good: forinstance, the nominal 50mA output of theNCR405U is guaranteed to be within the rangeof 42-58mA at a steady 10V input.

Featuring a low voltage overhead of just1.4V, these new NXP LED drivers help users tomaintain high efficiency and, in automotiveapplications, minimise strain on the main battery.

CUI has added a line of rugged DC-DCconverters which feature a very wideinput voltage range, and which provide between 50W and 200Wof output power.

The wide inputrange of the VHKseries convertersmakes themideal forapplicationsusing a powersource with afluctuating output suchas a battery, which exhibitslarge voltage swings across thecharge/discharge cycle.

The converters are housed in a ruggedchassis-mount enclosure.

This aluminium case measures 108mm x102mm x 38mm, and includes a built-in heat-sink which provides for excellent thermalperformance.

Users can select one of two input voltageranges: 9V to 36V DC or 18V to 72V DC. Theavailable output voltages are 3.3V, 5V, 12V,15V, 24V, 28V and 48V. The standard operating temperature range ofthe VHK series is -40°C to 85°C; the 50Wmodel operates at up to 60°C with convection

cooling. Other notable features of the

new family of convertersinclude high efficiency,

a fast response tovoltagetransients,remote sensecapability andremote on/offcontrol.

IR’s IRFH7185TRPbF: page 7PARTNERWORKING





High-speed CAN transceiverintegrates galvanic isolation

The OM14515 evaluation board for NXP’s TJF1052i is available fromFuture Electronics’ Board Club

The TJF1052i from NXP Semiconductorsis a High-Speed Controller Area Network(HS-CAN) transceiver which provides agalvanically-isolated interface between aCAN protocol controller and a two-wireCAN bus.

It is aimed at industrial applications, wheregalvanic isolation is necessary to bridge HS-CAN communication between different voltagedomains at speeds up to 1Mbit/s.

This isolation is necessary to prevent damageto the electric circuit in case of high voltagebreakthrough. By integrating the galvanicisolation in the transceiver, the TJF1052ieliminates the need for a stand-alone isolationdevice. This helps to reduce cost and boardspace, as well as improving reliability andreducing loop delay.

The capacitive-isolation technology used byNXP to implement isolation in the TJF1052iprovides for reliable data communication inextremely noisy environments, such as high-voltage battery-management systems, energy-distribution systems and high-power motorsand inverters. The TJF1052i is available in threeversions offering isolation values of 1kV, 2.5kVand 5kV.

The device is compatible with 3V and 5Vmicrocontrollers, produces low electro-magnetic emissions and benefits from highelectro-magnetic immunity.

NXP SEMICONDUCTORS

APPLICATIONS• Building automation• Transportation equipment• Industrial drive and control systems• Battery-management systems, e.g.

energy storage systems• Chargers for electric vehicles

FEATURES• 5kVrms isolation voltage, compliant with

UL1577, IEC 61010, and IEC 60950• <220ns maximum loop delay• 45kV/µs transient immunity • Under-voltage detection on supply pins


New rectifiers’ low forward-voltage drop cutspower losses

Vishay Intertechnology has extendedits range of Trench MOS BarrierSchottky (TMBS®) rectifiers with new45V, 50V, 60V, 100V and 120V deviceswhich feature an extremely lowforward-voltage drop, helpingdesigners to achieve higher energyefficiency in power system designs.

The devices, which are available with currentratings ranging from 10A to 60A, are offered inthe low-profile SMPD package: this is footprintcompatible with the D2PAK (TO-263) package,but has a profile which is just 1.7mm.

The forward-voltage drop of the new dual-chip TMBS rectifiers is rated as low as 0.4V at15A. The power saving this provides can helpdesigners to achieve the low power-dissipationlimits set by regulators for devices such assmartphone and tablet chargers, set-topboxes, LED-TV and computer power suppliesand ADSL modems.

VISHAY

APPLICATIONS• High-frequency DC-DC converters• Switching power supplies• Freewheeling diodes• ORing diodes• Reverse battery protection

FEATURES• Trench MOS Schottky technology • 150°C maximum operating junction

temperature


Part NumberMaximumForward

Current (A)VRRM (V)

Forward Voltage (at IF and TJ) IFSM (A)VF (V) IF (A) TJ (°C)

V10D45C-M3/I 10 45 0.41 5 125 100V30D45C-M3/I 30 45 0.40 15 125 200V60D45C-M3/I 60 45 0.48 30 125 320V30DL50C-M3/I 30 50 0.42 15 125 300V10D60C-M3/I 10 60 0.50 5 125 100V30D60C-M3/I 30 60 0.57 15 125 170V30D60CL-M3/I 30 60 0.49 15 125 200V10D100C-M3/I 10 100 0.60 5 125 100V40D100C-M3/I 40 100 0.63 20 125 250V60D100C-M3/I 60 100 0.66 30 125 320V10D120C-M3/I 10 120 0.64 5 125 100V40D120C-M3/I 40 120 0.64 20 125 250V60D120C-M3/I 60 120 0.70 30 125 320V20DM120C-M3/I 20 120 0.65 10 125 120V30DM120C-M3/I 30 120 0.67 15 125 150V40DM120C-M3/I 40 120 0.64 20 125 250

IF = Forward current. VRRM = Maximum peak repetitive reverse voltageTJ = Junction temperature. IFSM = Peak forward surge current


High-speed CAN applicationsOrderable Part Number: OM14515

FREEBOARDS





400V SiC MOSFET cuts switchinglosses by up to 90%

ROHM Semiconductor’s portfolio of SiC MOSFETs

ROHM Semiconductor has announcedthe introduction of the SCTMU001F, a400V N-channel Silicon Carbide (SiC)power MOSFET which is ideal for use inaudio applications such as speaker drivercircuits. The SCTMU001F is rated for amaximum continuous current of 20A.

This new part extends ROHM’s portfolio of SiCMOSFETs, which already includes a number of1,200V-rated devices. ROHM also supplies theindustry’s first SiC MOSFET co-packaged witha discrete anti-parallel SiC Schottky barrierdiode, the 1,200V SCH2080KE.

All t he ROHM SiC MOSFETs offer a reductionin switching losses of as much as 90% whencompared to silicon devices with a similarpower rating. This is due to the absence of tailcurrent and the fast recovery performance ofthe body diode, features which are inherent tothe SiC structure of the devices.

When implemented in power-systemdesigns, these SiC MOSFETs provide forincreased switching frequency, thus enablingthe use of smaller, cheaper and lightercapacitors and inductors.

The superior switching performance of theROHM SiC MOSFETs also results in higherefficiency. In many applications, this enablesdesigners to do away with complex andexpensive liquid or forced-air cooling systems,and replace them with smaller, lighter passiveair-cooled heat-sinks.

100V power MOSFET provides performance breakthroughin telecoms applications

The introduction by InternationalRectifier of its latest 100V FastIRFET™

power MOSFET provides a performancebreakthrough to the designers of DC-DCpower supplies used in telecomsdevices and equipment.

The IRFH7185 benefits from IR’s new 100VFastIRFET process, which offers a combinationof low on-resistance and low gate charge. Thismeans that the device operates at higherefficiency than competing MOSFETs, andenables power-supply designers to achievehigher power density as well as better systemreliability.

The IRFH7185’s efficient performance isavailable at light loads as well as full load.

In addition, the new 100V FastIRFET devicestructure offers a 20% improvement inavalanche-current density, providing theindustry’s most robust solution for DC-DCtelecom power supplies.

IR’s FastIRFET devices work with anycontroller or driver. The IRFH7185 is qualifiedto industrial grade.

IR’s FastIRFET process provides for low on-resistance and low gate charge

ROHM SEMICONDUCTOR

INTERNATIONAL RECTIFIER

APPLICATIONS: SCTMU001F• Audio equipment

FEATURES: SCTMU001F• 59nC total gate-charge• 132W maximum power dissipation• 150°C maximum junction temperature• 23ns rise time• 30ns fall time


APPLICATIONS• Telecoms power supplies• DC motor drives

FEATURES• 0.8°C/W thermal resistance to PCB• <1.05mm package height• Industry-standard pin-out• 3.6W power dissipation at 25°C ambient

temperature• 9.9ns typical rise time• 3.9ns typical fall time


ROHM SiC MOSFETs: much lower switching losses than equivalentsilicon MOSFETs

Wolfson’s WM5102S: page 9Microchip’s RN52: page 15PARTNERWORKING

CUI’s VHK series: page 5PARTNERWORKING

Part Number Package Maximum DrainCurrent at 25°C

On-resistance at10V (mΩ)

Typical Gate-chargeat 4.5V (nC)

Resistance x Gate-charge at 10V

IRFH7185TRPbF PQFN 5mm x 6mm 123A 4.2 36 151.2

Package

BVDSS 400V 650V 1200V

On-resistance 120mΩ 120mΩ 80mΩ 160mΩ 280mΩ 450mΩ

TO-220AB (3-pin) NEWSCTMU001F

NEWSCT2120AF – – – –

TO-247 (3-pin) –SCH2080KE NEW

SCT2160KENEW

SCT2280KENEW

SCT2450KESCT2080KEFor samples or pricing [email protected]:




4A synchronous buck regulator up to 95%efficient

Vishay Intertechnology has expandedits microBUCK® family of integratedsynchronous buck regulators with anew 4A device operating at high,programmable switching frequenciesof up to 1.5MHz and over a wide inputvoltage range of 4.5-15V. The outputvoltage range is 0.6V-5.5V.

The Vishay Siliconix SiP12109 includes bothhigh- and low-side power MOSFETs in aspace-saving 3mm x 3mm QFN-16 package.A complete 4A power circuit based on theSiP12109 can be realised in a board footprintof just 180mm2,making the deviceideal for a wide rangeof space-constrainedapplications.

An advanced power-saving mode providesfor efficiency of up to95% over the entireload range. TheSiP12109’s current-mode constant on-time architectureproduces very fasttransient response,and tight rippleregulation at very lightloads. The requirementfor output capacitanceis moderate.

VISHAY

APPLICATIONS• Point-of-load regulation • Space-constrained devices • Telecoms equipment • Industrial systems• High-density storage cards• Set-top boxes• Distributed power systems• Servers

FEATURES• Switching frequency range:

400kHz to 1.5MHz • ±1% output voltage accuracy• Programmable soft start


60V bipolar transistor offers lowthermal resistance

The new PHPT60603NY from NXPSemiconductors is a 60V, 3A high-power bipolar transistor which offersexcellent thermal performance.

Housed in an SOT669 (LFPAK56) surface-mounted power plastic package, this NPNtransistor has a smaller board footprint thancomparable transistors housed in a DPAKpackage.

Despite its compact dimensions, however,the PHPT60603NY has a high thermal power-dissipation capability. Thermal resistance fromjunction to solder point is just 6K/W, and thedevice is rated for operation at a junctiontemperature of up to 175°C.

In addition, the device’s moderate rate ofgeneration of waste heat contributes to goodenergy efficiency and low power consumption.

The PNP complement of the PHPT60603NYis the PHPT60603PY.

PHPT60603NY: LFPAK package offers a small board footprint

NXP SEMICONDUCTORS

APPLICATIONS• Power management• Load switches• Linear-mode voltage regulators• Backlighting applications

FEATURES• High thermal power-dissipation capability• Reduced waste heat generation• 8A peak current capability, single pulse• 6K/W thermal resistance, junction to

solder point• AEC-Q101 qualified



Point-of-load regulationThis reference board allows the user to evaluate theSiP12109 chip’s features and functions. It can also beused as a reference design for a user’s application. Orderable Part Number: SiP12109DB

FREEBOARDS

The SiP12109 offers a full protection feature set,including output under-voltage and over-voltageprotection, thermal shut-down, input under-voltage lock-out and a power-good indicator.

The regulator is stable with any capacitor typeand requires no ESR network for loop stability.

SiP12109DMP: 0.6-5V output available from 4.5-15V input range




Audio Hub offers high-performance audio andalways-on voice control

Wolfson Microelectronics has introducedthe WM5102S Audio Hub, which canprovide always-on voice control and 24-bit, 192kHz audio playback and help todramatically improve the user’s experienceof audio functions in mobile applications.

The WM5102S features an in-built voice-processing audio digital signal processor. Thissupports a suite ofsignal-processingsoftware packages,which may be combinedwith Wolfson’s Ez2control™ software.Designers of mobileapplications can thenenable always on,always listening voicecontrol without the needfor button-pressactivation, as required incurrent voice-controlsystems. This makes theWM5102S ideal for usein wearable electronicdevices and in theconnected home or car.

Previously, powerconsumption was abarrier to completehands-free voice control:

New space-saving 60V N-channel MOSFET

WOLFSON MICROELECTRONICS

NXP SEMICONDUCTORS

APPLICATIONS• Smartphones • Multimedia handsets• Tablets • Mobile internet devices • Portable music players• Headsets• Soundcards

FEATURES• Integrated 6-/7-channel 24-bit Hi-Fi Audio

Hub codec• Up to six analogue or digital microphone

inputs• Single-ended or differential microphone/

line inputs• Multi-purpose headphone/earpiece/line

output drivers• 2 x 2W stereo Class-D speaker output

drivers• Integrated LDO regulators and charge

pumps


APPLICATIONS• Relay driver • High-speed line driver • Low-side load switch• Switching circuits

FEATURES• Exposed drain pad for excellent thermal

conduction• Tin-plated 100% solderable side pads for

optical solder inspection • AEC-Q101 qualified


Rohm’s SCTMU001F: page 7Microchip’s RN52: page 15PARTNERWORKING

such always-on solutions caused the applicationprocessor to drain the battery quickly. TheWM5102S, however, uses very little power,allowing continuous operation in thebackground for complete voice-controlfunctionality without any manual interactionwith the host device.

The WM5102S features a class-leading120dB signal-to-noise ratio, and integratesWolfson’s advanced Master Hi-Fi™ filters, whichprovide for authentic playback of 24-bit StudioMaster recordings.

Like Wolfson’s other Audio Hub platforms,the WM5102S can operate with any applicationprocessor. It can run Wolfson's suite of sound-

NXP Semiconductors has introduced anew 60V device to its broad portfolioof N-channel Trench MOSFETs.

The PMPB85ENEA is an enhancement-modeMOSFET in a leadless, medium-powerDFN2020MD-6 (SOT1220) surface-mountedplastic package. The low-profile devicemeasures just 2mm x 2mm x 0.65mm. Thepackage is AEC-Q101 qualified and has tin-plated 100% solderable side pads for opticalinspection.

The PMPB85ENEA supports power circuitsrequiring fast switching: it is specified with atypical turn-on delay time of just 4ns at 30V,and a turn-off delay time of 10.5ns.

Total gate charge at 30V is 9.2nC, maximum,and on-state resistance is rated at amaximum 175mΩ when operating at ajunction temperature of 150°C and driving 3A.

The PMPB85ENEA’s thermal resistance,junction-to-solder point, is measured at a typical 4K/W.

PMPB85ENEA: leadless plastic package is just 0.65mm high

9

enhancement and noise-reduction software, aswell as users' own and third-party software.This enables OEMs to create customised audiosolutions for their devices and to differentiatetheir products’ audio functions and performance.

Wolfson WM5102S Audio Hub: 120dB signal-to-noise ratio and Master Hi-Fi™ filters





TVS diodes offer superior clamping performance inradio head applications

The AK series of high-current TransientVoltage Suppressors (TVS) from Littelfuseare ideal for use in AC or DC lineprotection in demanding applications inwhich the cost of maintenance andrepair is high, such as remote radio headsand wireless base stations.

Through the application of a suitable TVSdiode, any voltage rise due to increased currentconduction, for instance in the event of alightning strike, is contained to a minimum,providing the best possible protection. Theycan also be connected in series and/or inparallel to provide a higher level of protectionthan a single device provides.

The AK series TVS diodes, which areavailable in more than 30 variants, offer betterclamping performance than standard SiliconAvalanche Diode (SAD) devices. The AK series’unique characteristics provide for a clampingvoltage lower than the avalanche voltage andhigher than the rated working voltage.

In addition, the precisely specified clampingvoltage gives designers high confidence in thelevel of protection provided by the devices.

Solid-state TVS diodes have no mechanismto wear out, guaranteeing long life and reliableoperation. They also benefit from low leakagecurrent, fast response to transient events and acompact design.

LITTELFUSE

APPLICATIONS• Mobile phone base stations• Remote electrical installations

FEATURES• Glass-passivated junction offers high

reliability• Bi-directional• Sharp breakdown voltage• Low slope resistance


The TL8 series capacitors benefit from highlyefficient packaging, providing for the industry’shighest capacitance-voltage ratings in casesizes as small as 0805, and with a profile aslow as 0.8mm.

Vishay’s TL8 capacitors are offered in avariety of compact EIA standard footprints,including the 2.0mm x 1.25mm 0805 case;3.2mm x 1.6mm A case; and the 3.5mm x

2.8mm B case. Thedevices’ capacitance-voltage ratings rangefrom 3.3µF-35V to 220µF-4V.

The parts can bespecified with a standardcapacitance tolerance ofeither ±10% or ±20%,and with an operatingtemperature range of -55°C to 125°C.Operation attemperatures above40°C requires voltagede-rating.

VISHAY

APPLICATIONS• Battery-powered devices• Consumer electronics • OLED displays

FEATURES• Voltage range: 4V DC to 35V DC• Capacitance range: 0.68µF to 220µF


P • I • ES E C T I O N

Series AK1 AK3 AK6 AK10 AK15

ReverseStandoffVoltage (VR)

76

1530586676150170380430

30586676170190240380430

30586676170190240380430530

586676

Peak PulseCurrent (IPP 8x20µs)

1000A 3000A 6000A 10000A 15000A

Because of their small size, the TL8 capacitorshelp designers to save board space inapplications requiring bulk capacitance, energystorage, filtering or decoupling.

The capacitors’ lead-free, L-shaped face-down terminations offer better mechanical andelectrical contact to the solder pad thantraditional face-down terminations.

Vishay Intertechnology has released anew series of moulded MicroTan™

solid-tantalum chip capacitors suitedto space-constrained consumer-electronics devices.

AK series of TVS diodes: precisely specified clamping voltages

Low-profile, miniature chipcapacitors offer highcapacitance-voltage ratings

TL8 capacitors: specially designed terminations improve contact with solder pad

For samples or pricing [email protected]



PS2 series plug-in connectors: safely withstand high currents

Hirose has introduced the PS2 seriesof plug-in connectors to meet therequirement for high-performingindustrial-interface connectors withcurrent capacity high enough forstorage-battery applications.

The PS2 connector range consists of panel-mount plugs for the battery module side, andpanel-mount receptacles for the system rack side.

The PS2 features power contacts with acurrent rating of 100A, 200A or 300A and

Power-inlet filters bar noise up to 1GHz

TE Connectivity’s EJT series of high-performance power-inlet filters may beused to attenuate noise in the high-frequency range up to 1GHz.

Supplied with either spade terminals or wireleads, the EJT series of devices are specifiedto provide insertion loss performance to helpequipment meet FCC Part 15 and EN55022emission standards. Its two-stage circuitattenuates noise effectively up to 1GHz.

Variants are available rated for up to 15Aaccording to IEC 60320-1 C14, and 20Aaccording to IEC 60320-1 C20. 1A, 3A, 6A

and 10A variants are also provided. The filters are rated for operation at ambient

temperatures ranging from -10°C to 40°C. Attemperatures higher than 40°C, the maximumcurrent must be de-rated.

EJT series of power-inlet filters: protection meets requirements of IEC 60320-1 standard

HIROSE

TE CONNECTIVITY

APPLICATIONS• Storage batteries

FEATURES• Voltage ratings:

1,000V AC power300V AC signal

• Cable size: AWG16 to AWG18 (signal)• Rated for 50 mating cycles


APPLICATIONS• Plasma and LCD TVs• Computing equipment and accessories• Instrumentation • Measurement equipment

FEATURES• Maximum leakage current, line to ground:

0.25mA at 120V AC 0.43mA at 250V AC


P • I • ES E C T I O N


New high-power plug-in connectors forstorage batteries

contacts make the first mating contact,followed by the power contacts and finally thestandard signal contacts to confirm correctcontact engagement and safety.

The connector body has a unique floatingstructure. Each side of the connector body hasindentations which can accept a floating screw.The clearance between the floating screw andthe panel absorbs mounting misalignment inthe x and y directions up to 2.5mm.

signal contacts rated for 5A. The signal contactsare crimp-style: these are inserted into aseparate crimp housing which is then insertedinto the main connector body.

The power-contact structure featuresmultiple springs in a crown shape to decreasecontact resistance and to enable the connectorto safely withstand high currents. In addition,this design reduces the effect of vibration,providing for more reliable performance in harshindustrial environments.

The power contacts are easily connected tothe cables using a standard crimp contact andM8 screw. Alternatively the power contacts canbe connected to a bus bar.

A sequential mating structure ensurescorrect mating of the connector. Longer signal





New ESD diodes protect NFC antennas

NXP ESD protection diodes help maintain strong signal integrity in NFC antenna circuits

NXP Semiconductors has introduced anew series of ESD protection deviceswhich protect Near Field Communication(NFC) antennas in mobile devices fromtransient voltages.

The PESD18VF1BL and PESD24VF1BL are18V and 24V bi-directional diodes which

feature a typical capacitance specification aslow as 0.35pF. Housed in a small, leadlessDFN1006-2 package measuring just 1.0mm x0.6mm x 0.48mm, the new diodes are ideal fortoday’s compact and slim NFC host devicessuch as smartphones and tablets.

The NFC antenna is often integrated into thebattery cover or the battery itself and isconnected to the NFC IC via small contacts onthe phone. These contacts are an entry pointfor ESD strikes which are potentially hazardousto the NFC controller IC.

The new NXP protection diodes safeguardthe NFC IC as required by the IEC 61000-4-2

industry standard. At the same time, thedevices’ very small variation of diodecapacitance versus bias voltage serves tomaintain strong signal integrity in the antennacircuit. This combination ensures the bestpossible protection of the NFC system.

NXP SEMICONDUCTORS

APPLICATIONS• NFC antenna protection • Protection of high-speed data lines

FEATURES• Bi-directional configuration• 10kV ESD protection according to

IEC 61000-4-2• 1A peak pulse current• 1nA typical reverse leakage current


Wide-body IGBT driver offers superior creepagedistance for high isolation

A new wide-body IGBT driver fromVishay offers industrial designers arobust and economical means toprovide optical isolation of high-voltageindustrial power circuits. It is easy toimplement and provides for bothsafety and electrical-noise isolation.

The VOW3120 features an externalcreepage distance of >10mmbetween high-voltage power circuitryand low-voltage control circuitswhich are vulnerable to damagecaused by excessive voltages.

The device’s isolation voltagespecification includes the ability towithstand transient peak voltages ashigh as 8,000V, and repetitive peakvoltages as high as 1,414V. Thesesafety isolation ratings satisfy therequirements of domestic and globalelectrical-safety standards.

In addition, the VOW3120 IGBT driver offershigh noise-isolation capability, asdemonstrated by its extremely high typicalspecification for common-mode rejection of50kV/µs.

The VOW3120 consists of an infra-red lightemitting diode optically coupled to anintegrated circuit with a power-output stage.The voltage and current supplied by thisoptocoupler make it ideally suited for directlydriving IGBTs with ratings up to 1,200V/100A.

VISHAY

APPLICATIONS• Solar inverters• Industrial motor drives• Industrial welding equipment• Wind-generator inverters• Electric vehicle chargers• Industrial inverters

FEATURES• Supply voltage range: 15V to 32V• Operating temperature range:

-40°C to 100°C• <250ns typical switching propagation

delay • Under-voltage lock-out with hysteresis


NXP’s LPC1500: page 3PARTNERWORKING




D E S I G N N O T E

MULTI-TECH SYSTEMS

The cellular or mobile telephone modem is widely used inindustrial applications to provide a wireless gateway to theinternet. In fact, wireless Machine-to-Machine (M2M)communication has given the world an extraordinaryproductivity boost, enabling the manufacturers and owners ofalmost any kind of machine to add useful functionality, reduceoperating expenses and improve efficiencies.

For instance, equipping a nationwide fleet of vending machines withcellular modems provides the following benefits:• The operator can remotely monitor each vending machine’s status and

health, allowing for intervention with preventive maintenance before itbreaks down.

• The operator can set the route that drivers follow each day so thatthey are only serving machines that are almost empty. Thisdramatically increases the number of machines that one driver canserve, and allows more machines to be deployed at no additional cost.

• The machine can automatically report any emergency or failure to acentral control unit, often before it is discovered locally. This enablesoperators to schedule a visit by a repair crew immediately, thusreducing downtime and increasing revenue.

At the same time, the vending machine’s local host avoids the securityrisk entailed in providing a wired Ethernet or Wi-Fi connection to its localarea network. Third-party machines are known to provide a potentialentry point for malware.

The cellular router (modem) offers a robust, reliable interface to mobilephone networks; normally a router is specified for use only on a 2Gnetwork, or on either a 2G or 3G network. Demand for 4G (LTE)capability is also on the rise for applications with a requirement for veryhigh data rates, for instance for high-definition video streaming.

For the designer and manufacturer of the equipment which hosts therouter, its prime benefit is that it is extremely easy to bolt on to a new orexisting system design. All that is required is a DC power supply and acommunications interface to the host. Typically, this would be viaEthernet or RS-232. Produced as a sealed unit with mounting lugs, it issupplied fully approved by carriers for use on specified cellular networks,and with all necessary certifications such as FCC, in North America, anda CE mark, for use in Europe.

Cellular router suppliers are now also starting to add wirelessinterfaces to their products: a modem equipped with a Wi-Fi interfacemay be useful in certain applications, such as digital signage or vendingmachine installations, in which access to a wired connection isinconvenient, impracticable or prohibited by IT staff for security reasons.Wi-Fi also provides a simple way to reduce costs, because it allows acellular connection to be shared by multiple devices. In addition, Bluetoothis useful in applications such as in-home patient monitoring equipment.

Lifetime cost advantageWhile Bluetooth and Wi-Fi connections are typically only available inmore advanced routers, the basic functions of a cellular router are wellprovided for by a wide choice of reputable manufacturers. The maingrounds for differentiating between one M2M cellular gateway andanother, then, is likely to come down to long-term supply commitment,configurability and cost. And here a new family of routers from Multi-Techchanges the equation through a combination of reduced operating costsand optimised hardware configurations.

Free remote managementAlongside the release of the MultiConnect rCell 100 series of cellularrouters, see Figure 1, Multi-Tech has also introduced the industry’s firstworldwide, full-featured, remote device enablement platform that iscompletely free for the life of the router. The Multi-Tech Device Managerservice enables the equipment operator to remotely manage and upgradean entire fleet of routers from a single control centre.

Lifetime cost: the new battleground for cellular routers

Fig. 1: The new MultiConnect rCell 100 cellular router from Multi-Tech

Multi-Tech(MTR-H5-B07-EU)Device Manager

SupplierB

SupplierC

SupplierD

MSRP (device only) $305 $389 $489 $540

Device cost, 750 devices(MSRP) $228,750 $291,750 $366,750 $405,000

Device Management cost per device, 1 year $0 $26 $9 $12

Device Management cost per device, 5 years $0 $130 $45 $60

Device Management cost 5 years, 750 devices $0 $97,500 $33,750 $45,000

Total cost, 750 devices, DeviceManagement, 5 years $228,750 $389,250 $400,500 $450,000

Incremental Cost – $160,500 $171,750 $221,250

Table 1: A comparison of lifetime costs of a fleet of 750 Multi-Tech 3G cellular routers against 3G routersfrom three competing suppliers

Adding to the cost advantage of the MultiConnect rCell 100 family is theavailability of variants to meet different requirements in terms ofgeographical coverage, connectivity features and data rate. This meansthat OEMs can choose a variant which closely matches their need,opening up new geographical markets or segments quickly and easilywithout paying for unnecessary features.

High specification, lowest lifetime costAfter more than 20 years of supplying high-performance wired andwireless M2M communications gateways, Multi-Tech has won areputation for the reliable performance and robust construction of itsproducts. With the introduction of its remote Device Managerenablement service and the optimised hardware designs around its newrCell 100 platform, it is now able to offer an affordable combination ofsuperior performance and features.

It can be used to:• Remotely upgrade the firmware of a router• Remotely change a router’s configuration or set-up• Monitor the router’s status, notifications and performance• View the location of GPS-enabled routers

By eliminating the need for a technician to inspect or fix a router on-site,the Multi-Tech Device Manager service dramatically extends up-time andreduces service costs.

And because the Multi-Tech service is completely free, it can providelarge cost savings over the lifetime of a fleet of routers, as shown inTable 1.


Connectivity & The Internet of ThingsThis Application Spotlight brings to the fore some importantchanges to the choice of RF chips and modules available todesigners implementing both long-range and short-rangecommunications systems. These changes are being driven bysoaring demand from industrial equipment manufacturers,which can see scope to derive huge benefits from connectingalmost every kind of machine, from tiny sensorsto vast air-conditioning fans, to the internet. Thistrend goes by various names: many will befamiliar with Machine-to-Machine (M2M)communication, but the term now in vogue is the‘internet of things’. Whatever you call it, thepromise is of improved control, remotemanagement, networked interaction betweendifferent types of machines and, ultimately,greater value for the end-user.

In some cases, internet connectivity for M2Mcalls for very high data rates. In commercial,licensed, frequency bands for wide-areanetworking, cellular module manufacturers havetherefore recently begun to offer LTE technology. LTE cellularnetworks have been available to consumers for over a yearalready. Now industrial users can enjoy the 100Mbits/sdownlink, and 50Mbits/s uplink, data rates that smartphoneusers already enjoy, when they use the latest AirPrime modulesfrom Sierra Wireless, as featured on page 17.

This issue of FTM also features the remarkable LoRa™

technology from Semtech, shown on page 19. The LoRa

modulation scheme can achieve a range of more than 15kmwhen operating in the unlicensed ISM frequency bands. Thiscompares to the 2km range typically offered by transceiversusing FSK modulation. LoRa thus dramatically extends thecoverage achievable with a low-cost private network, whileusing fewer radio repeaters.

In Personal Area Networking (PAN), the chiefconcern is not range, but power. And here, thenew Bluetooth Smart, also known as Bluetooth4.0, technology offers a big breakthrough.Building on the wide consumer acceptance ofprevious Bluetooth technologies, and offering thesame promise of interoperability betweenhundreds of different manufacturers’ products,Bluetooth 4.0 provides a means to implement lowdata-rate wireless connectivity over a distance ofa few metres, while drawing minuscule amountsof power.

STMicroelectronics has introduced perhaps thesimplest and most integrated approach to

Bluetooth 4.0 implementation: its BlueNRG chip, featured on page16, combines a Bluetooth 4.0 radio, a controller and protocolsoftware to give a complete platform for new PAN designs.

News about these and many other new product introductionsin the arena of connectivity is contained in the followingApplication Spotlight section. For more information and supporton any of these products, please contact your local branch ofFuture Electronics.

Dynamic NFC tag IC forms contactlessbridge between MCU and NFC phones

The M24SR64 from STMicroelectronicsis a dynamic NFC/RFID tag IC with anI2C interface and embedded EEPROMmemory.

This same memory can be accessed by anNFC phone or reader and by an I2C host, suchas a microcontroller. This means that thedevice can be used as a bi-directional,contactless bridge between a microcontroller-based system and an RFID reader or NFChost device, such as a smartphone ortablet computer.

The M24SR64’s RF interface is based onthe ISO/IEC 14443 Type A, RFID standard.The device is also compatible with theNFC Forum Type 4 tag specifications, and supports all the relevant commands.

The M24SR64 uses the NFC forumNDEF message protocol, which canlaunch an instruction to a smartphone to act.

Such actions can include:• to go to a specific internet address (URL)• to send an email to a specific address • to launch an application and exchange data

with it

The I2C interface uses a two-wire serialinterface consisting of a bi-directional data lineand a clock line. Each M24SR64 devicecarries a built-in 4-bit device-type identifiercode in accordance with the I²C bus protocol.

The device behaves as a slave in an I2Csystem. The management of the interfaceselection is controlled by the M24SR64 itself.

ST's M24SR-DISCO-STD board helps designers to experiment

STMICROELECTRONICS

APPLICATIONS• Consumer devices• In-home patient-monitoring equipment• Android peripheral devices

FEATURES• Supply voltage range: 2.7V to 5.5V• 106kbits/s data rate• 8kbyte EEPROM• 200 years data retention• Rated for one million erase-write cycles


A P P L I C A T I O N S P O T L I G H T



NFC/RFID developmentThe M24SR-DISCO-STD demonstration kit helpsdesigners to quickly mock-up an application using theM24SR. The kit includes an STM32F103 microcontrollerto drive the EEPROM via I2C and the LCD screen via theserial peripheral interface. Orderable Part Number: M24SR-DISCO-STD

FREEBOARDS


C O N N E C T I V I T Y & T H E I N T E R N E T O F T H I N G S


Complete certified Bluetooth modulesupports streaming audio

Microchip RN52 module: complete hardware and software solutionfor audio streaming

Microchip has introduced the RN52, acertified Bluetooth® module whichsupports audio for music streaming, aswell as hands-free voice capability.

The Bluetooth version 3.0 module includesstandard Bluetooth audio and data profiles forall smartphone platforms. It is fully compatiblewith Bluetooth versions 2.1+EDR, 1.2 and 1.1.

The advantages of wireless technology,together with the rapidly expandingsmartphone and tablet markets, are increasingdemand for Bluetooth wireless audioaccessories. The RN52 module makes it easyfor designers to add Bluetooth audio capabilityto end-product designs, since it integrates aClass-2 Bluetooth radio, baseband controller,UART interface and programmable I/O, stereospeaker outputs, microphone input and a USBport into a single device.

The Bluetooth stack is hosted on the RN52.This means that the module works with anymicroprocessor or microcontroller, usingdedicated GPIO pins to access control and

status functions. In addition, it is software-configurable through commands carried over aUART console interface.

The RN52’s embedded Bluetooth stackincludes all the popular Bluetooth profiles, aswell as the iAP interface for use with iPhone®

and iPod® devices. In addition, the RN52supports a variety of audio codecs, such asSBC, aptX®, AAC and MP3.

The RN52 is available as a 13.5mm x 26mmx 2.7mm surface-mount package.

SoC and modules offer embedded Wi-Fi and ZigBeeconnectivity for IoT systems

MICROCHIP

GAINSPAN

APPLICATIONS• Wireless stereo headsets and speakers• Automotive hands-free audio• Wireless audio docking stations • Intercom push-to-talk audio connectivity• Computer accessories

FEATURES• Embedded Bluetooth profiles:

SPP, A2DP, HFP/HSP and AVRCP• Dual-channel, differential audio input and

output • External audio codecs supported via I2S

and S/PDIF interfaces• FCC, IC and CE certifications


APPLICATIONS• Connected-home equipment • Smart energy meters• Healthcare devices• High-speed audio, video and security

equipment• Commercial and industrial applications• ‘Smart Cities’ systems

FEATURES• Support for Station/Client mode • Soft access point capability for connecting

to smartphones• Wi-Fi Direct™ support• Concurrent Wi-Fi and 6LoWPAN• Embedded DHCP, DNS and HTTP(S)

clients and servers• Service and device discovery• Easy provisioning• Over-the-air firmware updates


Rohm’s SCTMU001F: page 7Wolfson’s WM5102S: page 9PARTNERWORKING


Bluetooth audio streaming developmentFeaturing a dual-channel audio output and input availablein analogue and digital formats, and provides an interfaceto external devices. There is also a built-in amplifier forstereo audio outputs. Orderable Part Number: RN-52-EK

FREEBOARDS

The GS2000 includes on a single die: • An 802.11b/g/n (Wi-Fi) and 802.15.4

(6LoWPAN/ZigBee) baseband and RFfunctions

• Two ARM® Cortex™-M3 processors to handlethe wireless protocols, networking stack andservices, and customer applications whenrequired

• A large on-chip memory

By using the GS2000, device and appliancemanufacturers no longer have to design forWi-Fi, ZigBee or 6LoWPAN separately, but canuse the same SoC to develop a design thatsupports multiple protocols, with IPv4 andIPv6 support, in the same product.

The GS2000 offers ultra-low powerconsumption to give years of battery life, andcomes complete with embedded softwarestacks offering a scalable, reliable, manageable

and secure wireless link. The GS2000 SoC and GS2000-

based modules offer a flexiblesolution for battery-powered

and line-powered Internetof Things applications,and can support

designs with no MCUhost or with low-cost 8- or

16-bit microcontrollers, aswell as 32-bit MCUs.


VGA video application evaluationThe GainSpan VGA Video Application Development Kit(ADK) is a complete reference design whichdemonstrates a VGA resolution (640 x 480) video-streaming application based on the GainSpanGS2011MIZ Wi-Fi module. Orderable Part Number: GS-ADK-VideoOVVGA

FREEBOARDS

GainSpan has introduced the GS2000, an integrated, ultra low-power Wi-Fi® and ZigBee®

System-on-Chip (SoC), and GS2000-based modules.





Bluetooth 4.0 network processor offersbest-in-class power consumption

STMicroelectronics’ BlueNRG is a highlyenergy-efficient Bluetooth® 4.0,Bluetooth® Smart, single-mode chipaimed at wireless ‘appcessories’ such asfitness wristbands, smart eyewear andinteractive clothing.

ST’s BlueNRG network processor provides thefunctions needed to link an appcessory to aBluetooth® Smart Ready host such as asmartphone or a tablet. Compliant with thelatest Bluetooth 4.0 standard, BlueNRGfeatures its own radio, ARM® Cortex™-M0-based processor and Bluetoothfirmware, providing a completeset of functions for BluetoothSmart connectivity.

The device’s excellent RF linkperformance provides forrobust connections toBluetooth host devices even inthe challenging conditionsoften encountered in wearabledevices.

Bluetooth 4.0 devices consume only a fractionof the power of Classic Bluetooth products,and the technology is now supported by all themain mobile and desktop operating systems.The best-in-class active power consumption ofthe BlueNRG processor enables ultra-lowpower devices to operate for months or evenyears from a small coin-cell battery.

In Transmit mode, peak current is just 8.2mAat 0dBm, and in Receive mode it is 7.3mA.

The BlueNRG chip gives designers theflexibility to choose their preferred hostmicrocontroller, and comes with Bluetooth LowEnergy profiles to run in the external applicationprocessor. The on-chip non-volatile memoryenables easy firmware upgrades in the field tomaintain compliance with future releases of theBluetooth specification.

STMICROELECTRONICS

APPLICATIONS• Wellness monitors• Fitness equipment• Wearable electronics • Proximity tags

FEATURES• 1.7µA current draw with Bluetooth stack

active• +8dBm maximum output power available

at antenna connector• 96dB maximum RF link budget• AES security co-processor• Battery-voltage monitor • Temperature sensor


Wideband attenuation, 100MHz to 8000MHz

AVAGO TECHNOLOGIES

APPLICATIONS• 802.11b/g/n Wi-Fi access points• Small-cell BTS with embedded Wi-Fi

capability

FEATURES• 50Ω input/output• No external matching required• Low insertion loss• High interference rejection• 27dBm maximum input power



Bluetooth® 4.0 developmentComprises an RF daughterboard and a microcontrollermotherboard. The RF daughterboard features theBlueNRG device, an SMA connector for an antenna ormeasuring instruments and an SPI connector for anexternal microcontroller. Orderable Part Number: STEVAL-IDB002V1

FREEBOARDS

Wi-Fi filter enables concurrentoperation of 2.4GHz deviceswithout interference

The ACFF-1024 enables the concurrentoperation of Wi-Fi and Bluetooth applications,even when adjacent frequencies such asPCS/LTE bands 7, 38, and 40 are present.Filtering with the ACFF-1024 enables the radiosto operate with no performance degradationdue to interference.

The new device benefits from Avago’sinnovative Film Bulk Acoustic Resonator(FBAR) technology, which makes possible theproduction of high-Q filters that are a fractionof the size of conventional devices. The ACFF-1024 has a 1.1mm x 1.4mm footprint and isjust 0.8mm high.

It offers 57dB minimum attenuation in LTE-band 7; 55dB attenuation in LTE-band 38; and50dB in LTE-band 40.

BlueNRG: Bluetooth radio, controller and firmware in a single chip



Avago Technologies has announcedthe introduction of a new Wi-Fi® filter,the ACFF-1024, intended for small-cellBase Transceiver Stations (BTS) andWi-Fi access points. It provides band-pass filtering of ISM-band frequenciesfrom 2401MHz to 2482MHz and can be used in any consumer device which features Wi-Fi connectivity.



Plug-and-play module provides stand-aloneWi-Fi capability

An intelligent Wi-Fi module fromSTMicroelectronics provides an easyplug-and-play option for integrating802.11 b/g/n wireless internetconnectivity into existing or new products.

The 27mm x 15mm x 2mm moduleis available in two versions: theSPWF01SA has an embedded2.45GHz micro-antenna; theSPWF01SC has no internal antenna,but provides a u.FL connector forconnection to an external antenna.

The module includes a single-chip802.11 transceiver with an integratedpower amplifier, and an STM32ARM® Cortex™-M3 microcontrollerwith many GPIO interfaces. Themodule also features on-boardclocks and voltage regulators.It is supplied with a full-featured

TCP/IP protocol stack, plus additional web-server and application-service capabilities. Thesoftware package provided with theSPWF01Sx also includes an AT command-layer interface for simple control of TCP/IPstack functions via the UART serial port.

The module’s low power consumptionmakes it suitable for battery-poweredapplications. In Transmit mode at full outputpower of 18dBm, it typically draws just 250mA,whilst in Stand-by with Wi-Fi scanning enabledit draws 25mA.

PCI Express Mini Card offers high-speed LTE connectionfor industrial applications

Sierra Wireless has launched itssecond generation of LTE (4G)embedded cellular modules, offeringsupport for more LTE frequency bandsand providing for global coverage andcarrier certifications.

Four modules are now available fromSierra Wireless: the AirPrime® MC7350,MC7350-L, MC7354 and MC7304 alluse the standard PCI Express Mini Cardformat popular in industrial applicationsand mobile computing.

AirPrime MC73xx modules giveOEMs the opportunity to use the veryhigh data rates offered by cellularoperators’ LTE networks. Up to100Mbits/s in the downlink and50Mbits/s in the uplink are possible,supporting advanced features such asenhanced voice and videocommunications. The modules allfeature echo cancellation, noisereduction and DTMF capabilities.

The LTE capabilities of the modules includesupport for Quality of Service (QoS), andVoLTE with Circuit Switch Fall Back (CSFB),providing for uninterrupted voice service as themodule moves from an LTE cell to a 3G, 2G orCDMA 1xRTT cell.

The MC73xx devices offer a Hi-SpeedUSB2.0 interface for communication with anapplications processor, four GPIOs and anI2S/PCM audio interface. They also featurebuilt-in satellite positioning capability via GPSand Glonass.

AirPrime module: combines LTE voice and high-speed data capabilities

STMICROELECTRONICS

SIERRA WIRELESS

APPLICATIONS• Smart appliances• Industrial control and data acquisition

equipment• Home automation • Home security systems• Wireless sensors• Cable replacement• Medical equipment

FEATURES• 1.5MB of Flash memory• 64kbyte of RAM • UART, SPI and I2C serial interfaces • Up to +18dBm RF output power• FCC, CE and IC certifications


APPLICATIONS• Industrial machine-to-machine

communications• Mobile computing

FEATURES• Operating temperature range:

Class-A: -30°C to 70°C Class-B: -40°C to 85°C

• Support for Windows® 7, Windows® 8 andLinux operating systems



M2M developmentA complete hardware development kit which provides allthe tools and accessories needed to test concepts,deliver prototypes or develop a product with an AirPrimeMC series wireless module. Orderable Part Number: AirPrime MC Series Development Kit

FREEBOARDS





Balun well suited to sub-1GHz ISM-band radios

The new BALF-SPI-01D3 fromSTMicroelectronics is a miniature balunwhich features a matching-impedancerating optimised for use with ST’s Spirit1,an ultra-low power RF transceiverintended for use in sub-1GHz RFapplications.

The BALF-SPI-01D3 integrates matchingnetwork and harmonics filters into one device.It uses ST’s IPD technology on a non-conductive glass substrate to provide the bestpossible RF performance.

With a frequency range of 779-956MHz, theBALF-SPI-01D3 is ideal for use in 868MHz and915MHz radio designs. In-band insertion losswith no mismatch loss is specified at a

maximum -2dB on both the receiver (balun)side and the transmitter (filter) side. Attenuationof transmitter harmonics at twice the outputfrequency is rated at a typical -35dBm, and atthree times the output frequency of -40dBm.

The BALF-SPI-01D3 has a 2mm x 1.4mmfootprint and is just 0.65mm high.

STMICROELECTRONICS

APPLICATIONS• Automatic meter reading• Home and building automation• Wireless sensors network• Industrial monitoring and control• Wireless fire and security alarm systems• Point-to-point wireless link

FEATURES• 50Ω nominal input/conjugate match to

Spirit1• Low amplitude imbalance• Low phase imbalance


New connectivity options in low-power ARM Cortex-M0+ MCUs

Atmel has expanded its low-powerARM® Cortex™-M0+ microcontrollerportfolio with the introduction of theATSAMD21 family of general-purpose,low-power MCUs.

Benefitting from the low powerconsumption of the 48MHzARM Cortex-M0+ core, thenew devices offer designers anattractive mix of connectivityand small footprint, and have ahighly competitive price-to-performance ratio.

Expanding the company’sgrowing line of Atmel SmartMCUs, the ATSAMD21 familyfeature Atmel’s patented EventSystem, a method ofcommunicating betweenperipherals so that a change ofstate at one peripheral cantrigger an action at anotherwithout any use of interrupts orany call on the CPU core orDMA controller.

Other advanced features inthe ATSAMD21 devicesinclude: • Up to six software-

configurable SerialCommunication (SERCOM)modules, which can act asany one of a number of serialinterface slaves such as I2C,SPI or USART

Atmel ATSAMD21 MCUs: unique Event System process for intra-chip communication

ATMEL

FEATURES• 70µA/MHz current requirement in Active

mode• 4µA current requirement for RAM

retention and real-time clock and calendar• Up to 256kbyte Flash memory • Up to 32kbyte SRAM• 12-bit, 350ksamples/s ADC


the new ATSAMD21 MCUs also integrate aDMA controller, and timers/counters for controlapplications. Its two-channel I2S interface with96MHz fractional phase-locked loop is suitablefor audio streaming.

Atmel’s ATSAMD21 devices are code- andpin-compatible with other SAM Dmicrocontrollers, making it easy for designersto migrate up and down the family.


SAM D21 Xplained Pro evaluation kitIdeal for evaluating and prototyping with the AtmelATSAMD21 ARM® Cortex®-M0+ based MCUs. Extensionboards to the ATSAMD21 Xplained Pro can bepurchased individually. Orderable Part Number: ATSAMD21-XPRO

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• A Peripheral Touch Controller which supportsup to 256 touch channels, suitable forcapacitive touch buttons, sliders and wheelsand for proximity sensing

• A Full-Speed USB interface (12Mbits/s)which supports USB device and embeddedhost modes, and requires no crystal

To help simplify the design process andeliminate the need for additional components,





ISM-band transceiver IC uses new modulation technologyto extend range up to 15km

Semtech has introduced the SX1272, atransceiver which uses new Long Range(LoRa™) modulation technology toproduce dramatic range improvementscompared to transceivers using othermodulation methods.

The maximum distance today of a smart-metertransceiver in Europe using FSK modulation is2km. The SX1272, using LoRa under the sameconditions and regulatory limits, can transmitmore than 15km.

The additional range provided by LoRa eliminatesthe need for radio repeaters, significantlysimplifying system design and lowering the totalcost of deployment.

The SX1272, which operates in the 860-1,020MHz frequency range, achieves receiversensitivity of up to -137dBm when paired witha low-cost crystal. By comparison, today’sstate-of-the-art FSK devices can achievesensitivity of just -115dBm with a comparablecrystal or -125dBm when using an expensivetemperature-controlled crystal oscillator.

Additionally, the SX1272 offers a 25dBimprovement over FSK devices in in-bandinterference rejection. This makes the deviceespecially effective in ISM-band applications

such as security and metering, because itprovides immunity from LTE mobile phonesignals at frequencies below 1GHz. Thisimmunity, combined with the SX1272’s highlylinear RF front-end, makes it the most reliableand robust solution for operating in thepresence of strong interfering signals.

The SX1272 supports GFSK, FSK, GMSK,and OOK modulation in addition to LoRa. Itsupports WMBus, IEEE 802.15.4g (SUN), FCC15.247, ARIB T96/108 and EN 300-220 aswell as other standards and regulations.

SEMTECH

APPLICATIONS• Metering• Industrial control networks • Sensor networks• Irrigation control systems• Internet of Things • Machine-to-machine communications

FEATURES• +20dBm maximum output power• 10.5mA typical Receive current• 100nA typical Sleep current• 28mA Transmit current at +13dBm• Data rate up to 300kbits/s• 72dB adjacent channel selectivity• 66dB image attenuation• Very fast frequency hopping• Compliant with ETSI, FCC, and ARIB

regulations


• Ultimate long range solution, 10x existing systems• Low-power, 3x longer battery lifetime• Improved network capacity, 5x improvement withLoRa concentrator

• High accuracy localisation, 5m accuracy

For more information [email protected]: For samples or pricing e-mail

[email protected]:



Complete Bluetooth 3.0 module offers easy-to-use firmware

STMICROELECTRONICS

APPLICATIONS• Serial cable replacement• Machine diagnostic equipment• Data-acquisition equipment• Machine control• Sensor monitoring• Security systems• Portable medical equipment

FEATURES• 128-bit encryption • Integrated antenna• -86dBm receiver sensitivity• 0dBm maximum RF output power• Operating temperature range:

-40°C to 85°C


Sensor-enabled RFID tags extend wirelessdata-logging beyond identification

ams supplies two RFID tags whichfeature on-board sensing capabilities,enabling designers to combine wirelessidentification with environmentalsensing in a single device. The SL13Aand SL900A support a simple, low-costimplementation of a new class ofwireless data-logging applications.

The SL13A is an ISO15693-compliant tag foruse with Near Field Communications (NFC-V)and High-Frequency Radio-FrequencyIdentification (HF RFID) readers. The SL900A isan EPC Gen 2 Class-3 tag for use with RFIDreaders.

The devices include an on-boardtemperature sensor accurate to ±0.5% and aninterface to an external sensor, which may beused to log environmental conditions such ashumidity, air pressure or ambient light.

Both devices can operate in passive,battery-less, mode. In this mode, the tagharvests energy from a reader’s broadcast,using the power to read the temperature, ordata from an external sensor, and transmitsthe information back to the reader togetherwith a unique ID. The data may be time-stamped by the reader.

The SL13A and SL900A can also bepowered by a single-cell or 3V battery. Inbattery-assisted passive mode, the tag’s on-

board real-time clock is enabled, and can beused to trigger periodic sensor readings. Thetags provide for very long battery life, drawinga typical 1.6µA in stand-by mode with the real-time clock running.

Up to 762 (SL13A) or 841 (SL900A) time-stamped events may be saved in the on-chipEEPROM, from where they may be read whenthe device is in range of a reader. Both theSL13A and SL900A feature a serial peripheralinterface for connection to a microcontroller.

The combination of a sensor interface, NFCcompatibility and support for passive modeoffers designers the opportunity to invent newkinds of wireless data-logging applications, orto find better ways to implement existing data-logging systems.

AMS

APPLICATIONS• Patient monitoring• Building control • Automotive safety equipment• Transportation and logistics• Inventory and stock control

FEATURES• Harvests up to 5mA from reader’s RF

emissions• Operating temperature range:

• SL13A: -40°C to 110°C• SL900A: -40°C to 125°C


For medical equipment OEMs, the SL13A andSL900A offer opportunities for exciting newapplications, such as an NFC sensor tag thatcan be safely implanted or swallowed. Thisenables patients to monitor physiologicalconditions around the clock, reading datasimply by holding an NFC-enabled phone ortablet close to the body.

The STMicroelectronics’ SPBT2632C2Ais an easy-to-use Bluetooth v3.0 modulewhich includes a Bluetooth Class-2radio, antenna and a comprehensiveprotocol stack. The only externalcomponent requiredis a low-poweroscillator if thedevice’s low-powermode is to be used.

Supplied with Bluetooth, CEand FCC certifications, theSPBT2632C2A can be integrated into existingdesigns to add Bluetooth connectivity quicklyand easily.

The module’s embedded Bluetooth AT2command firmware provides a simple controlinterface for cable-replacement applications. Itprovides for communication with otherBluetooth devices that support the Bluetooth

Serial Port Profile (SPP). The SPBT2632C2A also supports

the iAP profile for communicationwith Apple® iOS devices. An

Apple authentication IC isrequired to exchange data

with an Apple device or toaccess an Apple device’s

application. TheSPBT2632C2A’s

firmware canrecognise the Apple

authentication chip. The module features a UART

interface and seven general-purpose I/Olines. It offers a 560kbits/s data rate with theSPP service active, and 250kbits/s in iAPmode.

The SPBT2632C2A is a surface-mountdevice measuring 11.6mm x 13.5mm x 2.9mm.


Wireless data-logging applicationsDevelopment kits for SL900A EPC Gen2 Sensory Tag ICand the sensor-enabled SL13A series RFID tags. Orderable Part Numbers: DK-SL900A and SL13A-DK-STQFN16

FREEBOARDS



Future Electronics’ Board Club: supporting innovative electronics designThe Board Club website is a Future Electronics resource for users of development boards. Board Clubmembers can gain access to exclusive free development boards and development board offers.Please visit: www.my-boardclub.com to apply for any board and use the unique board request code foundin FTM to fast-track your application.

To apply for these free boards go to: www.my-boardclub.com/ftmTerms and conditions apply. Visit www.my-boardclub.com/about_us for details


21

Eval kit shows how easy it is to developcapacitive-sensing functionsThe CY3280-MBR3 CapSense® MBR3 Evaluation Kit helps designers to evaluate thethird generation of Cypress Semiconductor’s capacitive-sensing technology. It canbe used to develop CapSense button designs, and to implement proximity sensing.

FEATURES• Additional 1mm plastic overlay• USB cable• Quick-start guide


Combined Wi-Fi, Bluetooth and ZigBee interfaces provide completesolution for M2M connectivity

Redpine: firmware and drivers for Linux, Windows and Android devices

Redpine Signals has announced therelease of its RS9113 M2MCombo™

chipset, which integrates dual-band802.11n Wi-Fi®, ZigBee®, and dual-modeBluetooth 4.0 wireless connectivity on asingle die.

Also featuring a media access controller, digitalsignal processing and an analogue front-end,the device provides the ideal platform foruniversal M2M communications designs.Technology implemented by Redpine removesthe problems often encountered by systemdesigners when trying to co-locate multiplewireless protocols in a single device.

The RS9113 M2MCombo chipset is a fullyself-contained solution, with no requirement forany part of the protocols it supports to run ona host processor.

The device is able to maintain connectionson some or all interfaces simultaneously,providing the user with a multi-protocol gateway,a key feature for a device which can be deployedin both legacy and new wireless environments.

The CapSense MBR3 devices are register-configurable, and require no firmwaredevelopment on the part of the systemdesigner. The devices and the kit use the EZ-Click™ software tool to configure capacitive-sensing features.

For example, a gateway device based on theRS9113 could communicate with a medicalsensor via single-mode Bluetooth 4.0, asmartphone via Bluetooth or Wi-Fi, or an air-conditioning device with ZigBee connectivity,without the need for multiple modules fromvarious vendors.

Redpine provides a complete referencedesign for RS9113 implementations. In addition,its OneBox™ embedded software frameworksupports common API-based base transceiverstation, access-point, Wi-Fi Direct™, Bluetooth,ZigBee and SEP2.0 functions on a variety ofhost platforms and embedded operatingsystems. The software package includesfirmware, reference drivers, application profilesand a GUI for Linux™, Windows® and Android®.

REDPINE SIGNALSAPPLICATIONS

• Tablets and e-readers• Cameras and camcorders• VoWi-Fi phones• Gaming consoles• Wireless sensor and RTLS tags• Smart metering• Medical devices

FEATURES• Wi-Fi data rate up to 150Mbits/s• Bluetooth receiver sensitivity: -95dBm• Support for Bluetooth Transmit power

Class-1• ZigBee receiver sensitivity: -101dBm • Support for ZigBee output power up to

20dBm• <30µA current draw in Stand-by mode• Integrated ThreadArch® four-threaded

processor with on-chip memory • Adaptive power management • USB2.0, SDIO, SPI and UART host

interfaces


The CapSense MBR3 solution also supportsCypress’s industry-leading SmartSense™ Auto-Tuning technology, which reduces design effortby eliminating manual tuning for variations inPCB, overlay, paint and manufacturing. The kitcan be used to easily evaluate the advantagesof SmartSense Auto-Tuning.

The kit also demonstrates the watertolerance of the CapSense MBR3 devices. The MBR3 ICs retain CapSense functionality inthe presence of water droplets, streaming waterand mist. Included in each MBR3 EvaluationKit is a dropper for users to place water on theplastic overlays, enabling them to evaluate thewater tolerance of the MBR3 device.

The kit’s board also includes a proximityloop which can detect the presence of a finger


Orderable Part Number: CY3280-MBR3

FREEBOARDS

or hand up to 30cm away.The kit works as a stand-alone unit and as anArduino-compatible shield. It can be used toadd a capacitive-button user interface toArduino projects. Arduino-based exampleprojects for the kit are available at cypress.com.



T E C H N I C A L V I E W

Efficiency is one of the most important parameters by whichspecifiers and users evaluate hydraulic pumps. The demandfor higher efficiency has led pump manufacturers to adoptsophisticated new topologies and control techniques in thepump’s motor, and these designs call for new approaches tothe pump’s power stage. Piotr Pupar, Technical SolutionsManager, Future Electronics (Poland) explains.

This article examines one of the ways in which power semiconductormanufacturers are attempting to meet the power-system designer’s needs:the Integrated Power Module (IPM), a device type which is squarelyaimed at Europe’s vast market for industrial electric motors. In theory, amodule dramatically simplifies the design process for the pumpmanufacturer, removing the need to create a complicated power circuitcontaining tens of discrete components. But is there sufficient availability ofoff-the-shelf solutions to meet the diverse needs of pump manufacturers?

Authorities push for higher efficiencyCirculator pumps with hydraulic power of <2,500W are in use in tens ofmillions of homes and offices around the world, chiefly in central heatingand water distribution systems. The combined energy use of such a vastnumber of devices makes a large contribution to the world’sconsumption of electricity, and therefore of fossil fuels: it is estimatedthat these pumps consume approximately 50TWh of energy each year.

With good reason, then, the European Union (EU) sees great scopefor energy savings if it can bring about improvements to the operatingefficiency of these widely used types of pump. Indeed, a 2009 EUregulation, directive 2005/32/EC, requires pump manufacturers toimprove efficiency, reaching an Energy Efficiency Index (EEI) score lowerthan 0.27 in 2013, and down to 0.23 by 2015.

Pump manufacturers’ main strategy for achieving these targets is theapplication of advanced electronic control techniques, which offerreductions in energy use of as much as 80% compared to traditionalmotor designs.

AC induction motors are less efficientThe designer of a hydraulic system must select a pump that will operateat highest efficiency when the hydraulic load is at its highest. It followsthat the pump is less efficient when the hydraulic load falls belowmaximum. Efficiency is therefore reduced if the pump works at aconstant speed appropriate for the maximum load.

Traditionally, hydraulic system designers have therefore specifiedvariable-speed asynchronous AC induction motors, which are still inwidespread use. This motor type, however, is inherently far less efficientthan modern Permanent Magnet Synchronous Motors (PMSMs). Thesetypes of motors are also commonly described as electronicallycommutated motors: they require a complex control scheme to matchthe current through the stators to the position of the magnets affixed tothe rotor, in such a way as to maximise torque.

Since PMSMs can usually run at higher speeds than traditional ACinduction motors, a smaller pump is required to support any givenhydraulic load. Pump manufacturers also find PMSM systems easier toassemble and more reliable than AC induction motors.

The typical topology of a PMSM’s power stage is shown in Figure 1.An input rectifier and a 3-phase inverter supplies the motor. Thealgorithms implementing the commutation scheme are usually run by aDSP or microcontroller; application-specific standard parts for motorcontrol are also available from suppliers such as Fairchild Semiconductor.

A new generation of IPMsThe heart of a sophisticated PMSM is its control unit, and the controlscheme that it executes. This will occupy by far the largest part of themanufacturer’s design effort, and will be the key to its success in fulfillingthe requirements of regulations such as 2005/EC/32.

At the same time, however, the power circuit for a PMSM, as shown inFigure 1, is by itself a complex circuit that consists of many individualcomponents. In an industrial or residential pump, this circuit typicallyneeds to be reliable, robust and compact while meeting a tight pricetarget. Achieving this by designing a circuit from scratch calls for a hugeinvestment of design time and effort.

This is why power semiconductor suppliers such asSTMicroelectronics, Fairchild and International Rectifier (IR) have steppedinto the market with ranges of off-the-shelf power supplies suitable forpump motors. These smart power modules usually integrate thefollowing blocks in a single package, as shown in Figure 2:• a power stage consisting of six IGBTs or MOSFETs and six

freewheeling diodes• a driver network containing three high-voltage gate drivers with gate

resistors and bootstrap diodes• protection circuits, for over-voltage, under-voltage, over-current and

over-temperature, and additional features such as current sensing anddead-time

Fig. 1: Typical power stage of a PMSM

Power system design for efficient pu

EMAIL [email protected] FOR SAMPLES AND DATASHEETS22

READ THIS ARTICLE TO FIND OUT ABOUT• The typical topology of the power circuit in a modern pump’s

PMSM• The reasons for using an integrated power module to implement the

power circuit• Differences between the modules available from leading

manufacturers

Fig. 2: Typical motor-drive system, with the power stage implemented by the SLLIMM-nano IPM fromSTMicroelectronics highlighted in blue

T E C H N I C A L V I E W

At first glance, these devices look rather similar to each other. In fact,however, there are important differences between the IPMs that providea valuable element of choice for the pump manufacturer. Users candistinguish between the modules in particular in terms of: • voltage tolerance• size• autonomous protection features

Voltage toleranceAs the tables show, the modules from Fairchild and IR use a MOSFETas the power switching device; ST’s SLLIMM-nano uses an IGBT. Theuse of an IGBT enables the SLLIMM-nano to withstand a higher voltageof 600V which provides greater assurance to the designer that the pumpwill cope with over-voltage events without failing. A counterbalance tothis observation is the lower isolation voltage, 1,000V compared to the1,500V available in the SPM 5 series and the µIPM modules.

No heat-sink requiredThe modules also have a quite marked difference in size, at the systemlevel. The µIPM devices from IR are produced in a PQFN package,which is just 12mm x 12mm. This is already small, but this does notprovide the biggest space saving. In fact, the QFN package offers verygood thermal performance, and as a result the µIPM modules can drivea motor up to around 100W with no external heat-sink, as shown inFigure 3; according to STMicroelectronics, the same is true of theSLLIMM-nano modules.

In compact pumps, the elimination of this bulky component provides aconsiderable advantage over competing surface-mount packages thatrequire a heat-sink to be assembled on top of the device.


mps: how to select a suitable moduleThe SLLIMM™-nano IPM from STMicroelectronics, shown in Figure 2, issuitable for applications up to 100W. In fact, most circulator pumpapplications are specified for applications in the range 50-150W. This isthe target for IPMs from other suppliers as well, including Fairchild andIR, which provide IPMs offering a similar level of integration to theSLLIMM-nano devices, Fairchild with its Motion SPM® 5 series, and IR withits µIPM™ Integrated Power Modules, as shown in the Tables 1, 2 and 3.

As the tables show, all the modules integrate a number of protectionfeatures, which are essential to reliable operation. There is a difference inthe implementation of these protection features, however. Both theSLLIMM-nano and the µIPM devices implement protectionindependently of the controller, such as an MCU or DSP, and can switchthemselves off when necessary. The Fairchild SPM 5 series, on the otherhand, requires an external op amp to provide a feedback signal to the

controller. The Fairchilddevices also require an opamp for temperature sensingand protection.

STMicroelectronics has aclever approach to thisfunction in its STGIPN3H60. Inits Smart Shut-Down feature,an internal fault comparatormonitors for over-current,short-circuit and over-temperature conditions. If afault occurs, the device will beswitched off and a fault signalsent to the controller. Thisprovides for instant shut-down, without suffering fromlatency due to the cycling ofthe controller’s processor core.

ConclusionThe smart IPMs availabletoday provide a ready-madepower stage that matches the50W to 150W rating of thecirculator pumps mostcommonly used today. They

can simplify the design of the electrical drive circuit, and make it smaller,more robust and efficient. Importantly, they are also supported bycomprehensive design resources, including data sheets, application

notes, referencedesigns andevaluationboards, enablingmanufacturers toreliably find thebest device fortheir application.

Part Number SwitchingDevice

BreakdownVoltage (V)

Current(A)

On-resistanceat 25°C (Ω)

SwitchingFrequency

(kHz)

IsolationVoltage

(V)

BootstrapDiode Protections

FSB50250 MOSFET 500 1.2 3.8 20 1500 Yes UVLO, temperatureFSB50450 MOSFET 500 1.5 2.4 20 1500 Yes UVLO, temperatureFSB50550 MOSFET 500 2.0 1.4 20 1500 Yes UVLO, temperatureFSB50325 MOSFET 250 1.7 1.7 20 1500 Yes UVLO, temperature

Table 1: Fairchild Semiconductor Motion SPM 5 series

IRSM836-044MA MOSFET 250 4.0 1.05 20 Yes UVLO, overcurrentIRSM836-024MA MOSFET 250 2.0 2.20 20 Yes UVLO, overcurrentIRSM836-045MA MOSFET 500 4.0 1.70 20 Yes UVLO, overcurrentIRSM836-035MA MOSFET 500 3.0 2.20 20 Yes UVLO, overcurrentIRSM836-035MB MOSFET 500 3.0 2.20 20 Yes UVLO, overcurrentIRSM836-025MA MOSFET 500 2.0 4.0 20 Yes UVLO, overcurrent

Table 2: International Rectifier µIPM Integrated Power Modules

STGIPN3H60 IGBT 600 3.0 1.65 20 1000 YesUVLO, Interlocking Function,

Smart Shutdown, Comparator, Op Amp

STGIPN3H60-H IGBT 600 3.0 1.65 20 1000 YesUVLO, Interlocking Function,

Smart Shutdown, Comparator, Op Amp

STGIPN3H60A IGBT 600 3.0 1.65 20 1000 Yes UVLO, Interlocking FunctionTable 3: STMicroelectronics SLLIMM-nano family


Orderable Part Number: STEVAL-IHM036V1

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Fig. 3: Recommended boardlayout for an IRSM836-025MApower module driving a 93Wmotor, and its associatedthermal image. The effectivearea of the 1oz copper plane isapproximately 3cm2

component focus: pages 2-12 design note: page 13 · component focus: pages 2-12 ... energy...

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