stmicroelectronics€¦ · buck boost viper x6 viper15 viper16 viper17 viper25 viper26 viper27...

STMicroelectronicsEster Spitale

9:00 Power Management Ester Spitale

10:30 LED lighting

12:15 MOSFET/IGBT

13:00 IPS

Agenda

TimeSpeaker

Presentation

2

Power ManagementEster Spitale

Power Management Portfolio 4

Low Power AC-DC Conversion

VIPer+ Family

Altair Family

High Power AC-DC Conversion

PFC

Resonant Controllers

Monolithic DC-DC Converters

High Efficiency

Fail Safe Applications

Low Power Offline Converters

VIPer+ & Altair Families

6VIPer+ Family: Compact Solutions for Low Power AC-DC Conversion

< 30mW

…to a DC bus (3.3V, 5V, 12V…)supplying

• Microcontrollers

• PWM drivers

• Relay...

…providing minimized standby consumption for…

…from AC MAINS voltage

7VIPer+ Family: Concept

Off-line Converters based on a Dual-chip Approach

• 800-V Avalanche Rugged Power MOSFET

For Robustness

• Controller in LV Technology

For High Performance & Efficiency

HV Current Generator

Temperature Sensor for Over Temperature Protection

High Flexibilty

• Different Power MOSFET size

to manage Different Power Ranges

• Controllers with Different features

for Different Application Needs

8VIPer+ Family: Portfolio

ISOLATED POWER SUPPLY

Fly Back

High Features

Fixed Frequency

Peak Power

VIPer

x8

Brown out

VIPer

x7

Quasi Resonant

Brown out

VIPer

x5

Basic Features

VIPer

x6

NON ISOLATED POWER SUPPLY

Fly Back

VIPer

x6

Buck

VIPer

x6

Buck Boost

VIPer

x6

VIPer15

VIPer16

VIPer17

VIPer25

VIPer26

VIPer27

VIPer28

� For ALL APPLICATIONS up to 30W

� For ALL main TOPOLOGIES

� For ALL CUSTOMERS

VIPer35

VIPer37

VIPer38

VIPer06

6W 12W 15W4WVIN = 85-264 VAC

9VIPer+ Family: Features

Brownout

Delayed Over Load Protection (OLP)

PWM Current Mode

Operation

Over Voltage Protection (OVP)

Over Temperature Protection (OTP)with Hysteresis to improve the reliability

Self Supply meaning no need for

auxiliary winding

Quasi ResonantFixed Frequency (60 or 115kHz) with Jittering

(also 30 kHz on VIPer06)

Integrated OPA for simplified

non-isolated loop

High Over Current Protection(Transformer Saturation, Secondary Diode Short Circ uit)

Feedback Disconnection Detection with auxiliary winding

Burst Mode for light load management

Current Soft Start for

limited stress during the start-up phase

VIPerx8VIPerx7

Extra Power Timer

VIPerx5 VIPerx6BASIC

FEATURES

Automatic Auto-restart after Fault (when V DD reaches V DD_ON again)

Over Load Timer (50ms) before

Protection (OLP)

ISOLATED FLYBACK

NON-ISOLATED & ISOLATED FLYBACK /

BUCK /BUCK-BOOST

Automatic Auto-restart after Fault

(1 s fixed time)

Settable I DLIM to limit the maximum

power

10VIPer+ Family: Benefits

• Improved Reliability• Smaller Snubber• Improved Reliability• Smaller Snubber800-V MOSFET

• Reduced Consumption at Low Loads• Reduced Consumption at Low LoadsBurst Mode

• Lower Dissipation• Lower DissipationInternal R SENSEfor Current Sensing

• Flexibility/Possibility to Implement High PF• Flexibility/Possibility to Implement High PFExternally Settable I Dlim

• High Reliability• High ReliabilitySoft Start/OTP

11VIPerx7/5/8: Features

VIPerx5VIPerx5Quasi Resonant Operation Mode

Brownout Protection

VIPerx7VIPerx7Fixed Frequency with Frequency

Jittering

Brownout Protection

VIPerx8VIPerx8Fixed Frequency with Frequency

Jittering

Extra Power Timer

Born for Isolated Topologies…

…with Transformer Saturation Detection

Additional Features

12VIPerx7/5/8: Benefits

• High Reliability• High ReliabilityTransformer Saturation Protection (VIPerx5/x7/x8)

• No Spurious Restart at VMAIN Shutdown• No Spurious Restart at VMAIN ShutdownBrownout � Min VMAIN settable (VIPerx7/x5)

• Lower EMI • Lower EMI Frequency Jittering (VIPerx7/x8)

• Lower EMI• Lower Switching Losses• Lower EMI• Lower Switching Losses

Quasi Resonant Operation Mode (VIPerx5)

• Manage Higher Power for Short Time• Manage Higher Power for Short TimeExtra Power Timer (VIPerx8)

13VIPerx6: Benefits

Compact Solution for Non-Isolated Topologies…

…Suitable also for Standard Isolated Flyback

• Possibility to by-pass Error Amplifier and feed-back with Opto-coupler

• Self Supply disabled if Auxiliary Winding present

• No Opto-coupler Needed• No External OPA Needed • No Opto-coupler Needed• No External OPA Needed Embedded Error Amplifier

• No Auxiliary Winding Needed• No Auxiliary Winding NeededSelf Supply

14VIPerx6: New Comers

New: VIPer06…born for Small Appliances• 4-W Power Range & Stand-by down to 30 mW

• 30-kHz Version Available• Suitable for Buck • Lower Switching Losses • Lower Interference with PLM

New: VIPerA16…first VIPer+ in Automotive World• Automotive Grade Version of VIPer16 Available Now � Born for Hybrid &

Electric Vehicles

Some evaluation board… 15

• Off-line converter VIPER16LN

• Ultrafast diode STTH108

• Linear regulator L78L05

Key products

Please visit System evaulation board or contact a local ST office

Dual output power supply

(STEVAL-ISA010V1)

• Off-line converter VIPER06XS

• Ultra-fast diode STTH1L06A

Key products

Buck-boost power supply

(STEVAL-ISA096V1)

• Off-line converter VIPER06HN

• Power schottky diode STPS2H100

Non isolated Fly-back power supply

(V06HN4W-12VFN)

Non isolated Fly-back power supply

(V06HS4W-12VFN)

4 W non-isolated wide range SMPS

(STEVAL-ISA071V2)

Key products

• Off-line converter VIPER06HS


Key products

• Off-line converter VIPER16L


Key products

VIPer06/16 16

VIPer06 Order code Topology Input VAC Output Output Relevant AN Reference

VIPER06XS(SSO10, 30kHz)

STEVAL-ISA096V1Buck boost converter

85-265 1W -12V / -5V UM1470Small appliances,

Industrial

VIPER06HN(DIP7, 115kHz)

V06HN4W-12VFNNon isolated

Fly-back85-265 3.6 W 12V / 300mA AN4116 Appliances

VIPER06HS(SS10, 115kHz)

V06HS4W-12VFNNon isolated

Fly-back85-265 3.6 W 12V / 300mA N.A. Appliances

VIPER06HNV06HN4W-5VFN

Under developmentNon Isolated

Fly-back85-265 4W 5V / 800 mA N.A. Appliances

VIPER06HNV06HN4W-5VFI

Under developmentIsolated Fly-

back85-265 4W 5V / 800mA N.A. Appliances

VIPER06XSV06XS1W-5VB

Under developmentBuck Converter 85-265 1.25W 5V / 250mA N.A. Small appliances

VIPER06LSV06LS2W-12VB

Under developmentBuck Converter 85-265 1.8W 12V / 150mA N.A. Small appliances

VIPer 16 Order code Topology Input VAC Output Output Relevant AN Reference

VIPER16LN STEVAL-ISA010V1Non isolated

buck converter85-500 1.8W

12V / 5V (post reg.) / 150mA

AN2872 Power Meter

VIPER16LN EVLVIP16L-4WFNNon Isolated

Fly-back85-265 4.5W 16V / 280mA

AN3028draft

Appliances

VIPER16LN STEVAL-ISA071V1Non Isolated

Fly-back85-265 4W

- 5V / 400mA, +7V / 160mA

UM0920 Appliances

VIPER16LN EVLVIP16L-4WFLIsolated Fly-back

85-265 5W 12 / 350mA databriefAppliances

Auxilairy PSU

VIPER16LD EVLVIP16LD-1W5 Non Isolated

buck converter85-265 1.8W

12V / 5V (post reg.) / 150mA

databrief Small Appliance

VIPER16HN EVLVIP16H-4WFNNon Isolated

Fly-back85-265 4.5W 16V / 280mA databrief Appliances

VIPer17/27/37 17


VIPER17LN STEVAL-ISA058V1Isolated Fly-back

85-265 5W 5V / 1A AN2864 Stand-by PSU

VIPER17HN STEVAL-ISA060V1Isolated Fly-back

85-265 6W 12V / 0.5A AN2753 Stand-by PSU

VIPER17HN EVLVIP17-5WCHGIsolated Fly-back

90-265 5W 5V / 1A AN2840Cell Phone

Battery Charger

VIPER17HN STEVAL-ILL017V1Isolated Fly-back

220 ±20% 3.5W 7V / 500mA AN2811 Led Driver

VIPER17HN STEVAL-ISA062V1Isolated Fly-back

85-265 5.5W5V / 500mA

12V / 250mAAN2934 General Purpose

VIPER17HN EVLVIP27-7WLEDIsolated Fly-back

100-264 3.5W 10V / 350mA AN3212High Power

Factor Led Driver


VIPER27LN STEVAL-ISA103V1Isolated Fly-back

85-265 12W 5V / 2.4A AN2929 Auxiliary PSU

VIPER27HN EVLVIP27H-12SBIsolated Fly-back

85-265 11W 5V / 2.2A AN3011 Auxiliary PSU

VIPER27HN EVLVIP27-7WLEDIsolated Fly-back

100-264 7W 10V / 750mA AN3212High Power

Factor Led Driver


VIPER37LEEVLVIP37L-5V3A

coming soonIsolated Fly-back

85-265 15W 5V / 3AAN4007

draftATX, USB

charger

VIPER37LE Under developmentIsolated Fly-back

230±15% 15W 12V / 1.7A N.A.Consumer, Industrial

VIPER37HE Under developmentIsolated Fly-back

85-265 15W12V / 0.75A

5V / 1.2AN.A.

Consumer, Industrial

VIPer26 - VIPer15/25 – VIPer28 18


VIPER15LN STEVALVIP15L-6W

Quasi-ResonantIsolated Fly-back

90-265 VAC 6W 12V, 500mAAN3160

draftAuxiliary PSU

VIPER15LN EVLVIP15L-5WSB


90-265 VAC 5W 5V, 1A TBD Auxiliary PSU


VIPER25LN EVLVIP25L-10WSB


85-265 VAC 10W 5V, 2AAN3286

draft

Auxiliary PSUSTB

Power Meter


VIPER28LN EVLVIPER28L-10WIsolatedFly-back

85-265 VAC 12W 5V, 2.4A AN2950Auxiliary PSU

Printer


VIPER26LD STEVAL-ISA081V1Primary

Regulation Fly-back

85-265 12.5W 12V, 3.3V / 1A UM0984 Appliances

VIPER26LNEVLVIP26L-12WFNAvailable on request

Non isolated fly-back

85-265 12 W 12V / 1AAN4106

draftAppliances, Industrial

VIPER26HNEVLVIP26H-12WFNAvailable on request

Non isolated fly-back

85-265 12 W 12V / 1A TBDAppliances, Industrial

19

Altair Family: Low Power AC-DC Converters For Battery Chargers & Metering

• Constant Current / Constant Voltage Operation

• 2 Versions• ALTAIR05T-800: 800-V BV; Power up to 5 W

• ALTAIR04T-900: 900-V BV; Power up to 4 W

• Primary-Side Feedback

� NO OPTOCOUPLER NEEDED

20Altair Family:

Performance and Cost Optimization

• Internal 800-V / 900-V MOSFET

• Constant Current / Constant Voltage Operation

• Primary-Side Feedback

�� NO OPTOCOUPLER NEEDED

• Automatic Self Supply

• Quasi-Resonant Operation Mode

• Burst Mode for Light Load Management

• VIN Feedforward for Mains-Independent Regulation

• Transformer Saturation Protection

• Automatic Auto-restart After Fault

21Altair Family:

Performance and Cost Optimization

MOSFET turn on

No ZVS!

MOSFET turn onZVS

VIN

VDS

nVOUT

nVOUT

800 V (900 V)

Altair: Quasi-Resonant Converter with 800-V / 900-V MOSFET

VIN

VDS

600V

Standard Fixed-Frequency Converter with 600-V MOSFET

nVOUT

nVOUT

• 800-V / 900-V POWER MOS• Smaller snubber: lower power losses, PCB area and cost• Higher reflected voltage allowed, hence Zero Voltage Switching (ZVS)

achievable in Quasi-resonant Mode: less torn-on losses, higher reliability

• QUASI-RESONANT OPERATION MODE• Variable switching frequency: reduction on EMI

PFC Controllers

L656x Family & L498x

• A high Power Factor (~1) leads to an energy saving and more efficient power utilization.

• Reduce the copper area of distribution power wires.

• Cost reduction in downstream converter and removal of HV input ELCAP .

• EC61000-3-2 compliant

Equipments are divided up in 4 classes:

A: Balanced three-phase equipment and that not included in the other classes

B: Portable equipment

C: Lighting equipment with input active power >25W

D: Consumer equipment with input active power (>75W and ≤600W).

23Power factor correction – why and when

Power Factor Control Portfolio

L498410 pins

ADV.FOT

CCMTM

24

L4981N pinsADV.

AVG CM

L6562A8 pins

TM PFC

L6563S14 pins

ADV. + PWM I/F

L6563H16 pins

ADV. + PWM I/F+ HV Start-up

L6564/T10 pins

ADV.

L6564H14 pinsADV.

+ HV Start-up

FEATURES

Power Factor Control in STM• Long term experience in PFC

Since 2010, more than 200M/y controllers sold• Transition Mode (TM): L656x family.

• Continuous Conduction Mode (CCM): L4981 & now NEW L4984 in fixed off time (FOT)

• TM: L6562A starting point

• New value added• Advanced Protections

• High voltage start-up

• Parameter temperature range extension

• CCM: New 10-pin controller L4984 in fixed off time (FOT)

25

BOM & Efficiency Optimization

For Outdoor Applications

L656x Family: TM PFC 26

23/01/2013

• L656x: • in Power Factor Control stages of SMPS connected to AC input Mains up to 150W

• in LED lighting SMPS, single stage SMPS up to 60-70W

• to make the application compliant to EN 61000-3-2 regulation by limiting the Total Harmonic Distortion (THD)

SMPS INPUT CURRENT:• SINUSOIDAL • IN PHASE WITH MAINS

VOLTAGE

L6564H

LEDs

PFC: Product evolution

Low Cost

L6563H

Interface to PWM ctrl + High Voltage Start up

L6563SInterface to PWM ctrl

L6564H

HVS

CS

COMP

MULT

VFF

GD

GND

ZCD

PFC_OK

INV Vcc

N.C.

2

3

4

1

5

6

7 8

10

11

12

13

14

N.C.

N.C.

9

Advanced features+ High Voltage Start up

L6562A / AT

INV

COMP

MULT

CS

Vcc

GD

GND

ZCD

1

2

3

4 5

6

7

8

Adv. Features

INV

COMP

MULT

CS

VFF

Vcc

GD

GND

ZCD

PFC_OK

1

2

3

4

5 6

7

8

9

10

L6564 / T

27

PFC: From L6562A to L6564

• Inductor Saturation Detection • Choke optimization without risk of mosfet damaging

• Feedback Disconnection Protection and new OVP • Reliability increased

• Easier PCP lay-out

• Remote ON/OFF

• Voltage Feed Forward • Line Transient rejection

• Brown-out protection• Input Under-Voltage detection

• L6564T with Electrical Parameters guaranteed from -40C to +125C. Ideal for OUTDOOR applications

SSOP10 (SO8 body)1mm pitch

28

L6564H benefits 29

23/01/2013

to prevent output capacitor damageto prevent MOSFET over-currentto prevent MOSFET over-heatingto prevent overload

application flexibility

unique feature for highest efficiency& BOM minimization

• Set of protections for complete application reliability• adjustable protection against output over-voltage / open LED string detection

• inductor saturation protection

• open loop protection

• input Mains under-voltage detection

• input voltage feed-forward

• input pin for remote ON/OFF control

• 700V High-Voltage Start-Up on-chip• no need of start-up network

L6564H as standard PFC pre-regulator 30

23/01/2013

• Set of protections for complete application reliability• adjustable protection against output over-voltage (not latched)

• inductor saturation protection (not latched)

• open loop protection

• input Mains under-voltage detection

• input voltage feed-forward

• input pin for remote ON/OFF control

• 700V High-Voltage Start-Up on-chip

L6564HAC MAINS

DIFFERENT TECHNOLOGIES

forBEST

PERFORANCES

ST Power MOSFETsST Power MOSFETs

PFCTransition Mode

PFCTransition Mode

25W – 50W25W – 50W STx3N62K3 STx5N62K3STx3N62K3 STx5N62K3

50W – 100W 50W – 100W STx7NM60N STx10NM60NSTx7NM60N STx10NM60N

>100W>100W STx13NM60N STx18N55M5STx13NM60N STx18N55M5

Single stagehigh PF flyback

Single stagehigh PF flyback

15W – 75W15W – 75W

STx7N80K5STx7N80K5

STx21N90K5STx21N90K5

STx6N95K5STx6N95K5 STx20N95K5STx20N95K5

L656x companion MOSFET 31

SuperMESH3 ™ and MDmesh™ II• Low Rdson(on), best in class in dV/dt,

Available in PowerFLAT packages

SuperMESH5 ™• Outstanding static and dynamics

performances at 800V-950V

L6564H tools & support 32

23/01/2013

• EVL6564H-100W: 100W reference design for standard P FC

• Auxiliary reference designs for LED SMPS (based on L6564 or L6562A easy adaptable)

• EVL6564 – 50WFLB: 50W wide range high power factor flyback converter demonstration board based on the L6564

• STEVAL–ILL043V1 : 75W Two independent LED strings power supply based on L6562A in HPF Flyback

• STEVAL–ILL042V1 : 60W LED power supply based on L6562A and TSM101 (AN3424)

• Design support• AN4077: 100W transition-mode PFC pre-regulator with the new L6564H

• AN4028: 50W wide-range high power factor flyback converter using the L6564

• Excel spreadsheet DESIGNING WITH THE L6564H (AVAILABLE ON REQUEST)

L4984D: CCM PFC 33

23/01/2013

• L4984D, a Power Factor Controller: • for Power Factor Control stages of SMPS connected to AC input Mains

• to make the application compliant to EN 61000-3-2 regulation by limiting the Total Harmonic Distortion (THD)

SMPS INPUT CURRENT:• SINUSOIDAL • IN PHASE WITH MAINS

VOLTAGE L4984D

L4984D: Features 34

23/01/2013

• Power Factor controller for CCM operation with low THD

• Set of protections for complete application reliability• Adjustable OVP on output voltage (Not Latched)

• Inductor saturation (Not Latched)

• Open loop protection

• Input Mains under-voltage detection

• Remote ON/OFF control input pin

• Small package

L4984DAC MAINS

L4984D: Benefits 35

23/01/2013

• Power Factor controller for CCM operation with low THD

• Set of protections for complete application reliability• Adjustable OVP on output voltage (Not Latched)

• Inductor saturation (Not Latched)

• Open-loop protection

• Input Mains under-voltage detection

• Remote ON/OFF control input pin

• Small package

to prevent output capacitor damageto prevent MOSFET over-currentto prevent MOSFET over-heating

Application flexibility

PCB minimized

L4984DAC MAINS

L4984D performances & tools 36

23/01/2013

• 350W reference design (EVL4984-350W)• Efficiency > 94% on 85VAC – 264VAC input range

• THD<10% at full load on 85VAC – 264VAC input range

• Design support• AN4149: designing a CCM PFC pre-regulator with the L4984D

• AN4163: 350W CCM PFC pre-regulator with the L4984D

• Excel spreadsheet DESIGNING A FOT PFC USING THE L4984 (AVAILABLE ON REQUEST)

L4984D companion MOSFET / rectifiers 37

23/01/2013

L4984 – 10 pin CCM power factor controller

RECTIFIER (600V reverse voltage)

� SiC (Silicon Carbide) � STPSCxx06

� Turbo 2 � STTHxxR06� Tandem � STTH806DTI

MOSFET (>500V breakdown)

� High power (>1kW) � MDMesh5 e.g. STP42N65M5 for ~2KW

� Medium power (~200W to 1KW) � MDMesh2e.g. STx25NM50M for ~400W

L4984D - summary 38

23/01/2013

• L4984D is the right solution for middle-high power SMPS and is the best trade-off between full set features, performance and price.

• L4984D is able to address a wide range of applications:• SMPS for industrial, lighting & home appliances

• EV battery chargers

• Solar Inverters

• Servers SMPS for Data centers

• high end game consoles, desktop, and workstation

• Suitable also for modified buck for LED applications from e.g 120VDC bus

Resonant Controllers

L659x/L669x Family

Resonant Topology

• ADVANTAGES:• High efficiency at full load

• Low EMI

• Good form factor

• DRAWBACKS:• More external component required (higher cost)

40

Typical LLC Resonant Architecture 41

No OutputChoke

Td between LGand HG allows ZVSOperation @ Turn-on

When fsw ≈ frsinusoidal waveformslow turn-off losseslow EMI

Out

ZCS OperationNo recovery losses

HigherEfficiency

&Improved

Form Factor

Resonant Topology 42

L6598BASIC HV RESONANT CONTROLLERfor STANDARD LLC TOPOLOGIES

HV Gate driverSoft startSpare OP AMPLatching & non-latching pins

HV Gate driverBurst-modeTwo levels OCPPFC interfaceBrown-out / Seq. inputDIS pin latch for OVP

L6599/L6599AIMPROVED HV RESONANT CONTROLLERfor STANDARD LLC TOPOLOGIES

L6699HIGH PERFORMANCE HV RESONANT CONTROLLERfor ADVANCED LLC TOPOLOGIES

High Efficiency at Light LoadAnti-capacitive ProtectionEnhanced Soft StartNo audible noise at burst mode

PERFORMACES

Resonant Topology: Why L6699?

• ADVANTAGES:• High efficiency at full load (soft switching due to ZVS operation)

• Low EMI (smooth current shape)

• Good form factor

• DRAWBACKS:• Low efficiency at low loads

• More external component required

• HARD SWITCHING can occur:

• In case of not proper application circuit design at high loads (Capacitive Mode)

• At Start-up

• At light loads

DANGEROUS!!!

LOW EFFICIENCY AT LIGHT LOADS

43

L6699 vs. L6599A• Self-Adjustable Dead Time (Dead Time is Longer at Light Loads)

• High efficiency even at light loads

• Optimized transformer design (it is possible to design the resonant tank with a higher LM, hence with a lower magnetizing current → lower dissipation)

• Anti-capacitive Mode • High reliability (hard switching is prevented even in case of Not Proper Application

Circuit Design)

• Extra Smooth Start-up (Enhanced Soft-start in addition to the traditional Frequency-Shift Soft Start)

• High reliability (Hard Switching is prevented even at Start-up)

• Soft Burst Mode• No audible noise at light loads

• Lower quiescent current• High efficiency even at stand-by

• OCP (over current protection) also available with auto-restart

44

L6699: Promotional Tools

• Demo-boards & Application Notes:• EVL6699-90WADP: 90W/19V SMPS with PFC L6563H

(AN4026)

• EVL6699-150W-SR: 150W/12V SMPS with PFC L6563H & Synchronous Rectification SRK2000 (AN4027)

• 170W/ 24V-12V-5Vstby Multi-output SMPS for TVs

• L6699 Design Worksheet (on request)

45

DC-DC Converters

Consumer, Industrial/Automotive, Lighting

ST DC-DC Converters: Portfolio 47

In Development

CO

NS

UM

ER

/ IN

DU

ST

RIA

LIN

DU

ST

RIA

L /

AU

TOM

OT

IVE

LIG

HT

ING

2-3-

4 A

2-3

A

Max V IN Device Highlight

5.5 ST1S30 & ST1S31/2/AST1S32 Compact Solution (also Automotive Version)

~ 18 V

ST1S03, ST1S10 & ST1S40/1 Compact Solution

ST1S50/1/2 Compact Solution with low consumption requirement at light loads

ST1CC40 & LED2000/1 Compact LED Driver

L598x & L5988D/9D High-featured/flexible Solution

28 V L7980/1 High-featured/flexible Solution

~ 38 V

L597x & L/A7985/6 High-featured/flexible Solution (also Automotive Version)

L/A6986 High-featured/flexible Solution with low consumption requirement at light loads (also Automotive Version)

L/A6902D Battery Charger/LED driver with active OVP (also Automotive Version)

48 VST1S14 Compact Solution

LED5000 High-featured/flexible LED Driver

55 V L497x High-featured/flexible Solution

61 VL7987 High-featured/flexible Solution

LED6000 High-featured/flexible LED Driver

ST DC-DC Converters: Where are we going? 48

• Synchronous • Minimum Component Count• Packages: Small or Cheap

Standard Consumer

• Very Low Quiescent Current • Synchronous • For Consumer (VIN = 18 V) and Industrial (VIN = 38 V)

High Efficiency at Light Loads

• Up to 61 V• Industrial � Fail Safe Systems

High Input Voltage

• Low FB Voltage for Low Dissipation• PWM Dimming PinLighting

• AEQ QualificationAutomotive

DC-DC Converters: Focus for New Projects

49

49

5.5 V (for Logic Bus)

ST1S31/23/4 A

Synchronous

18 V (for 12-V Bus)

ST1S40/12/3 A

Synchronous Cost Effective

L598xAsynch. (up to 3 A) &

Synchronous (4 A)Flexible

ST1S5x2 & 4 A

Synchronous Low Quiescent Current

38 V (for 12-V Bus)

L798x2/3 A

Asynchronous

L698638 V – 2 A

Low Quiescent Current

> 38 V

ST1S1448 V - 3 A

Asynchronous

L798761 V – 3 A

Adj. Current Limit

Thank you for your attention

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