power management ic overview

© ZMD AG 2010 - Company Confidential – not to be copied or reproduced without ZMD AG’s consent Seite 1

Analog Power DCDC, nano-Power IC’s

June 2012


Related Ultra-Low Power ICs

Part # Description Features Application

ZSPM4011 DCDC Converter, 1A

1MHZ switching DCDC converter. Vin 6V – 24V, Vout 0.9V to 5.5V, line regulation +/- 2mV, Vout regulation 2%, load regulation +/- 0.5%, quiescent current 5uA,

only 4 external components (3 caps, 1 inductor)

Wifi access point, battery operated

devices, Digital TV, Video Conferencing, Portable applications

ZSPM4012 DCDC Converter, 2A

1MHZ switching DCDC converter. Vin 6V – 24V, Vout 0.9V to 5.5V, line regulation +/- 2mV, Vout regulation 2%, load regulation +/- 0.5%, quiescent current 5uA,

only 4 external components (3 caps, 1 inductor)



ZSPM4013 DCDC Converter 3A

1MHZ switching DCDC converter. Vin 6V – 20V, Vout 0.9V to 5.5V, line regulation +/- 2mV, Vout regulation 2%, load regulation +/- 0.5%, quiescent current 5uA, only 4 external components (3 caps, 1 inductor)




Ultra-Low Power Battery Management

Part # Description Features Application

ZSPM4121 Battery Management Under Voltage Load

Switch

VTHRESHOLD 1.2V - 4.2V (100mV steps factory programmed), 70nA standby (100pA disabled)

Portable battery-operated electronics

ZSPM4141 Ultra-Low-Power Linear

Regulator

Vin = 2.5V to 5.5V, VOUT 1.2V - 4.2V (100mV steps factory programmed) @ 200mA, 20nA standby (100pA disabled)


ZSPM4551 Li-ion Charger for

conventional sources

VIN = VIN = VBATT + 0.3 (3.5V) to 7.2V IICC-STBY, IBAT-LEAK, TJ see ZSPM4521 1.5A of continuous output current


ZSPM4521 Li-ion Charger for PV

(Solar) sources

VIN = 4.0V to 7.2V IICC-STBY (EN=0):15uA (typ) IBAT-LEAK (EN=0, 4.1V):10uA (max) 1.5A of continuous output current TJ = -40C to 125C

Portable battery-operated electronics,

Solar-powered chargers

ZSPM4522 NiMH Charger for PV

(Solar) sources

VIN = 3.2V to 7.2V IICC-STBY, IBAT-LEAK, TJ see ZSPM4521 1.5A of continuous output current



ZSPM4523 Super Cap Charger for PV

(Solar) sources

VIN = 3.2V to 7.2V IICC-STBY, IBAT-LEAK, TJ see ZSPM4521 1.5A of continuous output current




ZSPM401x DCDC Converters


ZSPM401X – Line of Products

• ZSPM4011 (1A): 1.5V, 1.8V, 2.5V, 3.3V, 5.0V, variable



Three Families – 18 Products

Preliminary Data Sheet Rev. 0.3 / November 2011

ZSPM4011 High Efficiency 1A Synchronous Buck Converter

Preliminary Data Sheet Rev. 0.3 / November 2011


Preliminary Data Sheet Rev. 0.2 / October 2011



ZSPM401X Key Features and Applications

Key Features •  Wide Vin 6V to 24V (20V for 3A) •  Fixed Vout 1.5V, 1.8V, 2.5V, 3.3V,

5V, adjustable (+/- 2% tolerance) •  Adjustable version Vout 0.9V to

5.4V (+/- 1.5% reference) •  5uA (typ) in standby mode •  Optimized for light-load conditions

(PWM, PFM)

Customer Benefits •  High-level of integrated protection

reduces BOM (3 caps, 1 inductor) •  Wide Vin-range = Highest flexibility •  Low standby current = low power

budget

Applications •  On-card switching regulators •  Set-top box DVD, LCD, LED supply •  Hand-held Devices

ZSPM401X – 1MHz, 1/2/3A Current Mode Synch Buck DC/DC Converter

Z401

1


Fully integrated DCDC-Converter

High Level of Integration

RTOP, RBOT Resistor divider only required for variable Vout setting.


Apples to Apples – Package Footprint, Efficiency

ZSPM401x: High Efficiency in a Small Package + 4 ext. Components • 16-QFN (3x3) = package footprint 9mm2 • 90% (5V in, 1.8V out) • 93% (6V in, 3.3V out) LM3151: High Efficiency in a large Package + 10 ext. Components • 14-TSSOP (5x6.4) = package footprint 30.2mm2

• 95% (6V in 3.3V out) LMR105xx: Medium Efficiency in a Small Package + 9 ext. components • SOT23 (3x3) = package footprint 9mm2 • 83% (5V in, 1.8V out) • 91% (5V in, 3.3V out)

5 x 6.4 mm Package

3 x3 mm Package

3 x 3 mm package


Competitive Comparison

Parameter ZSPM401x TPS54325 LM20333Output Current 1A, 2A, 3A Regulator 3A Regulator 3A RegulatorTopology Synchronous Synchronous SynchronousEfficiency @ 1A 93% (6V -‐ 3.3V)

90% (6V -‐ 1.8V) 85% (12V -‐ 1.8V)

91% (12V -‐ 3.3V) 87% (12V -‐ 1.8V)

93% (5V to 3.3V) 89% (12V -‐ 3.3V)

Input Vrange 6V -‐ 24V (3A: 6V-‐20V) 4.5V-‐18V 4.5V to 36VOutput Voltage 0.9V -‐ 5.0V 0.76V-‐18V 0.8V-‐5VOutput V accuracy +/-‐ 2% N/A 0.015Line Regulation +/-‐ 2mV 20mV 0.05%(From Graph)Load Regulation +/-‐ 0.5% 100mV Data sheet claims less than 1%Switching Frequ. 1MHz Fixed 700 kHz 200 kHz.Quiescent A (typ) 2mA TYP: 0.85ma MAX:1.3mA 3mAQuiescent A (stby) 5uA 10uA 180uALight Load Feature Yes Yes NoFault Protection Features

Current limit, thermal shutdown, OVP, UVLO

OVP, UVP, UVLO and thermal shutdown OVP, UVLO, THERMAL

Power Good Yes Yes YesSoft Start Yes Yes YesTemp Range -‐40C to 125C (150 Junction) -‐40C to 150C junction ?40°C to + 125°CPackage 16L PQFN (3x3) PWP (14 PIN) 20-‐Lead eTSSOP External components

Fixed Vout: 3 caps, 1 inductor Variable Vout: above, plus 2 resistors

5 capacitors, 2 resistors, 1 inductor 5 capacitors, 2 resistors, 1 inductor

ZSPM401x and The Competition


Competitive Comparison

Parameter NCP5252 LM3151 TPS40055Output Current 2A Regulator Controller ControllerTopology Synchronous Synchronous SynchronousEfficiency @ 1A 90% (5V -‐ 3.3)

Max is 93%Defined by external FETS and Inductor

and CapsDefined by external FETS and Inductor

and Caps

Input Vrange 4.5V to 13.2Output Voltage 0.6V to 5.0V 3.3V FIXEDOutput V accuracy +/-‐ 1% N/A N/ALine Regulation 0.1% /V N/A N/A Load Regulation Not specified (graphs: about 0.5%) N/A N/ASwitching Frequ. Programmable from 333kHz to 1.0MHz Fixed @ 250 kHz/500 kHz/750 kHz Programmable Up to 1-‐MHzQuiescent A (norm) 1.0mA typ; 2.5mA max 3.6mA 1.5mAQuiescent A (stby) 10uA max 39uA @ 18Vin @25C N/ALight Load Feature "Skip mode" for light load Not Specified (but likely) YesFault Protection Features

UVLO, OVP, OCP, Thermal Shutdown Termal shutdown, UVLO, OVP, short-‐circuit, current limit

Termal shutdown, UVLO, OVP, short-‐circuit, current limit

Power Good Yes No YesSoft Start Yes Yes YesTemp Range ?40°C to + 85°C ?40°C to + 125°C ?40°C to + 125°CPackage QFN16 3x3 mm 14-‐Lead eTSSOP 16-‐Pin PowerPAD™External components

1 Inductor, 4 resistors, 6 input/output caps, bootstrap cap, freq select cap

2 External Fets , 1 inductor, 8 Caps. Depends on Topology

ZSPM401x and The Competition


ZSPM4121 Ultra-Low-Power Under-Voltage

Load Switch


Key Functions

1. Provides switching function •  Connects / disconnects battery to

protect from destructive discharge

2. Provides charge to the battery while in OFF Mode standby (Iqq-off100pA)

•  Provided Schottky diode (body diode) in design

3. Open-drain pull-down for power-good indication (drive an LED (RED/GREEN)

4. Control load (connect / disconnect) in energy scavenging (trickle charge) applications (e.g. indoor solar applications)

ZSPM4121 – Ultra-Low Power Under-Voltage Load Switch



Typical Application

Charger Load

ZSPM4121

GND

VOUT

NPG

VCC

Typical Application Circuit for Disconnecting the Battery

ChargerLoad

ZSPM4121

GND

VOUT

NPG

VCC

Typical Application Circuit for Disconnecting the Load

Trickle charging function

Direct charge / disconnect battery


Key Features • Vin = 1.2V to 5.5V • VTHRESH = 1.2V to 4.2V (100mV factory programmed steps) • ON Mode Standby: Iqq (VCC = 5V, no load) = 70nA • OFF Mode Standby: Iqq-disable (VCC < VTHRESH, no load) = 100pA • Low Rds(on):

•  175mΩ (typical) @ 5V •  350mΩ (typical) @ 1.8V

• Operating Temp (Tj): -20C to 85C • Over-current Shutdown: 3A


Customer Benefits • Maximum battery life • Fully integrated, low component count

• Ultra compact package: 8L DFN 2x2

Applications •  Hand-held, battery opperated apps •  RFID, energy harvesting •  Consumer Medical and industrial remote sensor networks


ZSPM4141 Ultra-Low-Power Line Regulator


ZSPM4141 – Ultra-Low Power Line Regulator

Key Features •  Vin = 2.5V to 5.5V •  Vout = 1.2V to 4.2V (100mV steps) •  Drive loads up to 200mA •  Iqq: 20nA (load=0 and Vcc = 4.2V) •  Iqq-disable: 100pA (EN=0, Iout=0) •  Accurate output regulation: 1%

Vline, 2% Vload •  Over-current protection integrated:

250mA •  Operating Temp (Tj): -20C to 85C

Customer Benefits • Maximum battery life • Best-in-class Iqq-disable current: 100pA (typical)

• Ultra compact package: 8L DFN 2x2

Applications •  Hand-held battery opp. Applications •  RFID, energy harvesting •  Smart Card



Simple Application Circuit

Load

GND

EN

VOUTVCC

FB

ZSPM4141

CBYP 0.1µF

(typical)

VCC = 2.5V to 5.5V

COUT 2.2µF

(typical)

VOUT = 1.2V to 4.2V



Application Example: Standalone Solar Application Current solar charging technology is not efficient enough for many portable and standalone applications. •  Solar energy is 1000x lower indoors (10mW/cm2 vs. 10µW/cm2) •  Legacy control circuitry has high active and standby power dissipation •  ZSPM4121 can supply more energy to the application or storage element than

competing solutions

Metrics Legacy Solution ZSPM4121

Solar energy available (indoors) 10µW/cm2 10µW/cm2

1” x 2” solar panel 125µW 125µW

Solar harvesting efficiency 75% 85%

Power harvested from panel 93µW 106µW

Loss due to harvesting electronics -26µW -420nW

Power available for application 67µW 106µW

Power required by application 100µW 100µW



Top Reasons to buy ZSPM4121

•  Lowest standby power in the industry (Iqq: 70nA; Iqq-disabled: 100pA) • Compared to existing solutions, 60x reduction (nA vs. µA) in

application standby current • Quiescent current of ZSPM4121 below battery self-discharge current •  ZSPM4121 is optimized for portable, battery operated apps

•  ZSPM4121 enables novel applications (e.g. remote sensing networks)

• Wide VTHRESHOLD range (1.2V to 4.2V) offers great flexibility

•  Integrated over-current protection (3A) eliminates external components

•  Enables novel applications (e.g. remote sensor systems)



Top Reasons to buy ZSPM4141

•  Lowest standby power in the industry (Iqq: 20nA; Iqq-disabled: 100pA) • Compared to existing solutions, 100x reduction (nA vs. µA) in application

standby current • Quiescent current of ZSPM4141 is below battery self-discharge current

•  ZSPM4141 is optimized for portable, battery operated apps

• Drives loads up to 200mA over full Vcc range

•  Vcc range from (2.5V – 5.5V) offers flexibility

•  Integrated over-current shut-down (250mA) reduces external components

• Wide Vout range 1.2V to 4.2V (100mA factory programmed increments)

•  Enables novel applications (e.g. remote sensor systems)


Thank You!

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