Power conversion - Компэл conversion “Power and Analog ... •SG3524, SG3525 ... Fixed Frequency (60 or 115kHz) with Jittering Simplified Non Isolated loop 2° OCP

Power conversion

“Power and Analog” certification program

Luca Salati

Industrial and MultiMarket BU – EMEA region

08/11/07 – REV. 2 2

HV Monolithic Switchers

• VIPer20/A, 50/A, 100/A

• VIPer12A, VIPer22A, VIPer53/E

• VIPer17 / 27 / 28 / 16 / 26 / 15

• Altair05 / Altair04

PFC

Controllers

TM

• L6561

• L6562

•L6563S/H

•L6562A/T

•L6564

FF-CCM

•L4981A/B

PWM Controllers

PWM – FF

• UC384x, L5991/A

• SG3524, SG3525

• L6668

• L6591

QR

• L6565

• L6566A /B / BH

RESONANT

• L6598

• L6599A

Synchr. Rectifier Controllers

• STSR2P, STSR2PM

• STSR3, STSR30

• SRK2000

Load-share Controller

• L6615

CV/CC Controllers• TSM101, 103W

• TSM1011,1012,1013,1014

• TSM1051, 1052

• SEA05

Supervisor/Housekeeping ICs

• TSM102,104W,106,107,109

• TSM111, 114,115

• L6610, L6611

• TL77XX

AC-DC conversion portfolio

Robustness and effectiveness SMPS…..

…..with VIPer + and Altair families

HIGH PERFORMANCES LOW CONSUMPTION HIGH RELIABILITY LOW COMPONENTS COUNTS ADVANCED TECNOLOGY HIGH PERFORMANCES LOW

CONSUMPTION

08/11/07 – REV. 2

VIPer+ / Altair introduction:

new double chip approach

4

LOW

VOLTAGE

TECHNOLOGY

AVALANCHE

RUGGED

SUPERMESH

(NK)

TECHNOLOGY

AC-DC converters up to 20W (as of today…) for:

Home appliances / automation

Auxiliary SMPS in STB / PWM / HID lamp (including street-lighting)

LED lighting

Metering

Industrial SMPS

08/11/07 – REV. 2 5

VIPer37

VIPer25

VIPer17 VIPer27

VIPer35VIPer15

VIPer28 VIPer38

VIPer16 VIPer26VIPer06

24 WSuperMESH

7 WSuperMESH

30 WSuperMESH

VIPer+ Converter Portfolio

VIPer50VIPer22

VIPer20VIPer12

800 V

Av.Rug.

18 W 30 W 5.5 W730V

620V

1 W (3)

6W(1) / 12W(2) 12W(1) / 24W(2)4W(1) / 8W(2) 15W(1) / 30W(2)

CTRL

VIPer x7

CTRL

VIPer x8

CTRL

VIPer x5

CTRL

VIPer x6

(1) Open frame, VIN = 85 - 264VAC ,

(2) Open frame, VIN = 230VAC ±20%,

(3) Achievable consumption at no load with Vin 264VAC

4.5 W SuperMESH III

SSO10 & DIP7 SO16N & DIP7 SO16N & DIP7 SDIP10

Product not availableunder development, SOP planned within 2011

30 mW(3)

30 mW(3)

30 mW(3)

30 mW(3)

Trainings/VIPerx7_28EXT.ppt

Trainings/VIPerX5training.ppt

Trainings/VIPER16_26training.ppt

08/11/07 – REV. 2 6

Brown out

Over Load Delay

PWM operations with settable IDLIM

Over Voltage

Over

Temperature

shut down

No auxiliary

Quasi ResonantFixed Frequency (60 or 115kHz) with

Jittering

Simplified

Non Isolated

loop

2° OCP

Feedback

disconnection

Extra Power

Timer

Burst Mode

Soft start

VIPer x7 VIPer x8

Brown out

VIPer x5 VIPer x6Basic features

Auto restart

Auto restart

(fixed time)

Main features

800VAvalanche Rugged

Fixed Frequency(301 or 60 or 115kHz)

with Jittering

Latched a

Feedback

disconnection(option only for VIPer06)

Latched OVP(option for VIPer25LLD)

(1) 30kHz available only for VIPer06



Trainings/VIPerX5training.ppt


08/11/07 – REV. 2 7

VIPer37

VIPer25

VIPer17 VIPer27

VIPer35VIPer15

VIPer28 VIPer38

VIPer16 VIPer26VIPer06

SMPS topology and main applications

High features - Isolated Fly-backAuxiliary PS, STB, DVD, Games console, LCD TV,

major appliances, Motor control, Power Meter,

Chargers, Adapters, PC Stand-by

Quasi Resonant - Isolated Fly-backAuxiliary PS, STB, DVD, Games console, LCD TV,



Peak Power Isolated Fly-backDVD, Printer, ATX

Basic features – Isolated Fly-backAuxiliary PS, STB, DVD, Games console, LCD TV,



Non Isolated convertersHome appliances, Small appliances, Lighting, Power

meter

DIP7

SO16N

DIP7

SO16N

DIP7

SSO10SDIP10

1W……. …….15W(1) / 30W(2)

08/11/07 – REV. 2

Evaluation Boards and ANs

8

VIPer 17 Order code Topology Input VAC Output Output Relevant AN Reference

VIPER17LN STEVAL-ISA058V1Isolated

Fly-back85-265 5W 5V / 1A AN2864 Stand-by PSU

VIPER17HN STEVAL-ISA060V1Isolated

Fly-back85-265 6W 12V / 0.5A AN2753 Stand-by PSU

VIPER17HN EVLVIP17-5WCHGIsolated

Fly-back90-265 5W 5V / 1A AN2840

Cell Phone

Battery Charger

VIPER17HN STEVAL-ILL017V1Isolated

Fly-back220 ±20% 3.5W 7V / 500mA AN2811 Led Driver

VIPER17HN STEVAL-ISA062V1Isolated

Fly-back85-265 5.5W

5V / 500mA

12V / 250mAAN2934 General Purpose

VIPER17HN EVLVIP27-7WLEDIsolated

Fly-back100-264 3.5W 10V / 350mA AN3212

High Power

Factor Led Driver


VIPER27LN EVLVIP27L-12WSIsolated

Fly-back85-265 12W 5V / 2.4A AN2929 Auxiliary PSU

VIPER27HN EVLVIP27H-12SBIsolated

Fly-back85-265 11W 5V / 2.2A AN3011 Auxiliary PSU

VIPER27HN EVLVIP27-7WLEDIsolated

Fly-back100-264 7W 10V / 750mA AN3212

High Power

Factor Led Driver

08/11/07 – REV. 2


9


VIPER06LS

VIPER06HSUnder development

Non isolated

Fly-back85-265

12V / 300mA

option

( 5V /800mA)

TBD Home appliance

Under developmentIsolated

Fly-back85-265 TBD TBD Home Appliance


VIPER16LN STEVAL-ISA010V1Non isolated

buck converter85-500 1.8W

12V / 5V (post

reg.) / 150mAAN2872 Power Meter

VIPER16LN EVLVIP16L-4WFNNon Isolated

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

AN3028

draftHome appliance

VIPER16LN STEVAL-ISA071V1Non Isolated

Fly-back85-265 4W

- 5V / 400mA,

+7V / 160mAUM0920 Home appliance

VIPER16LN EVLVIP16L-5WFLIsolated

Fly-back85-265 5W 12 / 350mA databrief

Home appliance

Auxilairy PSU

VIPER16LD EVLVIP16LD-1W5 Non Isolated

buck converter85-265 1.8W

12V / 5V (post

reg.) / 150mAdatabrief

Small Home

Appliance

VIPER16HN EVLVIP16H-4WFNNon Isolated

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


VIPER26LD STEVAL-ISA081V1Primary

Regulation

Fly-back

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

08/11/07 – REV. 2


10


VIPER15LN STEVALVIP15L-6W

Quasi-

Resonant

Isolated

Fly-back

90-265 VAC 6W 12V, 500mAAN3160

draftAuxiliary PSU

VIPER15LN EVLVIP15L-5WSB

Quasi-

Resonant

Isolated

Fly-back

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


VIPER25LN EVLVIP25L-10WSB

Quasi-

Resonant

Isolated

Fly-back

85-265 VAC 10W 5V, 2AAN3286

draft

Auxiliary PSU

STB

Power Meter


VIPER28LN EVLVIPER28L-10WIsolated

Fly-back85-265 VAC 12W 5V, 2.4A AN2950

Auxiliary PSU

Printer

08/11/07 – REV. 2 11

Application: home appliances / automationNEEDS

Low standby consumption required by new norms for Energy savings (EU community)

To provide 2 or 3 output voltages to supply:

microcontroller (3.3V / 5V) like STM32 / STM8

HV drivers e.g. L638x/L639x family (15V)

Relays (12-15V)

Topologies

Not isolated (common neutral to the output for triac/ACST driving)

MCU

Vip16

Vip26

P

N

Load

+12V

-5V (-3.3V)

Relay,

Half-bridge driver,

Display,

etc.

( motors, resistive heaters,

light bulbs/ballasts,...)

+15V

Va

c IG

LOAD

CONTROL

CIRCUIT

+VDD

VSS

Negative supply

(NPN buffer)

SELLING POINTS: STANDBY LOWER THAN 100mW, LOWER BOM TANKS TO THE INTEGRATED OP-

AMP, 800V MOSFET (=RELIABILITY)

08/11/07 – REV. 2

STEVAL-ISA071V1 - description

-5 / +7 V non-isolated flyback

■ Non isolated flyback topology

■ Common Neutral (output GND)

■ Input voltage range 85 – 265VAC

■ Output voltages -5V and 7V (12V refer to -5V)

■ Output power – 4W (for full range) 6W for EU range

■ Conductive EMI EN55022 Class B

■ Stand by below 50mW at 230VAC

Typical Applications:Home AppliancesHome/building automationLighting

Documentation:UM0920 – “4W non-isolated, wide input-voltage range

SMPS demonstration board based on the VIPer16”

Board Purpose:It addresses customers working on applications using direct triac control and relays. This method required an negative supply of MCU. This SMPS provides also additional auxiliary supply (12V refer to -5V) for

additional parts in application.

Key Product: VIPer16L STTH1L06STPS1H100STPS1L60

08/11/07 – REV. 2

STEVAL-ISA081V1 - description

12V Isolated Flyback – Primary Regulation

• Isolated Flyback Converter

• Input: 85 ~ 305 Vrms

• Output Nominal:

• 12 VDC ± 10%, 1A

• 3.3 VDC ± 4% , 100mA

• Output voltage settable in the range 10V – 18V/12W

• Maximum output power 12W

• Standby power (no load) <150mW

• Primary regulation

• EMI: according to EN55022 Class B

Typical Applications:Home AppliancesHome/building automationLightingConsumerMetering

Documentation:

UM0984 – “STEVAL-ISA081V1 demonstration board based on a 12 V / 1 A

isolated flyback

Board Purpose:General auxiliary power supply. Low cost solution (thanks primary regulation) allows to set output voltage in range 10 – 18V at output power 12W.

Key Product: VIPer26L STTH1L06STPS2H100STPS5L60L78L33

08/11/07 – REV. 2 14

VIPer17 / 27 / 37

Main Features

Main parametersMAIN PARAMETERSPower MOSFET

(SuperMESH)

CONTROLLER

(BCD6S)

Break down voltage [V] 800

RDSon [Ohm] 24 / 7 / 4.5

VDD [V] 9 ÷ 23

FOSC [KHz] 60 or 115

Max IDlim [mA] 420 / 740 / 1050

RTHJ-A [°C/W] (1) 50

POUT [W] @ 85-265VAC 6 / 12 / 15

(1) Package SO16N and 100mm2 of Cu

(2) Open Frame

800V, avalanche rugged power MOSFET

PWM controller with drain current limit, IDlim.

Adjustable current limit, IDlim

Fixed Frequency with Jittering

High performance for stand-by & efficiency

Integrated protections: OVP, OLP, high OCP

Automatic auto restart after fault

Hysteretic thermal shutdown

Brown-out: minimum input voltage is settable

Pin description

* BR pin has the position 10 for VIPER17LD/HD (SO16N package)

*

GND

controller ground / power MOSFET Source

VDD

controller supply voltage / ICHARGE output current

CONT

OVP set-up, IDLIM set-up.

FB

current loop feedback

BR

brown out set-up

N.A.

Not Available for user. (It can be connected to GND)

N.C.

Not Connected

*

08/11/07 – REV. 2 15

VIPer28

Main Features

Main parametersMAIN PARAMETERSPower MOSFET

(SuperMESH)

CONTROLLER

(BCD6S)


RDSon [Ohm] 7

VDD [V] 9 ÷ 23

FOSC [KHz] 60 or 115

Max IDlim [mA] 850

RTHJ-A [°C/W] (1) 50

POUT [W] @ 85-265VAC 12

(1) Package SO16N and 100mm2 of Cu

(2) Open Frame

GND


VDD


COMP

OVP set-up, IDLIM set-up.

FB

current loop feedback

EPT

Extra Power Time set-up

N.A.


N.C.

Not Connected


PWM controller with drain current limit, IDlim.


Fixed Frequency with Jittering





Extra Power Management

Pin description

08/11/07 – REV. 2 16

VIPer06 / 16 /26


PWM controller with drain current limit IDlim

Adjustable current limit,IDlim

Fixed frequency with Jittering

high performance for stand-by & efficiency

No need of auxiliary winding

Automatic auto restart after faults


Direct feedback for non isolated SMPS

Replacement of capacitive power supply

Open loop protection

Main Features

Main parametersMAIN PARAMETERS

Power MOSFET

(SuperMESH)

CONTROLLER

(BCD6S)


RDSon [Ohm] 30 /24 / 7

VDD [V] 9 ÷ 23

FOSC [KHz] 30 or 60 or 115

Max IDlim [mA] 420 / 740

RTHJ-A [°C/W] (1) 80

POUT [W]@ 85-265 VAC 4 / 6 / 12

(1) Package SO16N, 100mm2 of Cu

(2) Open Frame

GND


VDD


LIM

Current limit set-up, IDlim .

FB

direct voltage feedback (in case of non isolated SMPS)

COMP

Compensation network.

Current loop feedback in case of isolated SMPS

N.A.


N.C.

Not Connected

Pin description

08/11/07 – REV. 2 17

VIPer15 / 25

Main Features Pin description

Main parametersMAIN PARAMETERS

Power MOSFET

(SuperMESH)

CONTROLLER

(BCD6S)


RDSon [Ohm] 24 / 7

VDD [V] 9 ÷ 23

FOSClim [KHz]up to 150 (L type)

up to 225 (H type)

Max IDlim [mA] 420 / 740

RTHJ-A [°C/W] (1) 80

POUT [W] @ 85-26 VAC 6 / 12

(1) Package SO16N, 100mm2 of Cu

(2) Open Frame


Quasi-Resonant PWM controller with drain current limit, IDlim.


Feed-Forward compensation





Brown-out: minimum input voltage is settable

GND


VDD


ZCD

Zero Current Detection, Feed-Forward set-up, OVP set-up, IDlim set point.

FB

Current loop feedback

BR

Brown out set-up

N.A.


N.C.

Not Connected

08/11/07 – REV. 2 18

C6

R4

R2

+C1

C3 C4

R3

+C5

D3L1

FB

DRAIN

GND VDDCOMP LIM

VIPER x6

D2

D1

+C2

R1

Controller

T1

GND

VOUT

+

-

Schematics with VIPerx6

FLY-BACK / Fixed Freq.

NON ISOLATED

Simplified feedback loopR3, R4

No Need auxiliary windingC4

Low cost EMI filterC1, C2, L1

Low cost clamp componentsR2,D2,C6

Default current limit400mA / 700mA

Short circuit protection

(automatic restart)

VIPer06 / 16 / 26


08/11/07 – REV. 2


19

C6

R4

R2

+C1

C3 C4

R3

+C5

D3L1

FB

DRAIN

GND VDDCOMP LIM

VIPER x6

D2

D1

+C2

R1

Controller

T1

GND

VOUT

+

-

FLY-BACK / FF

NON ISOLATED





Current limit set-up - RLIM

<400mA or <700mA


(automatic restart)RLIM

VIPer06 / 16 / 26


08/11/07 – REV. 2


20

Stand-by optimization , 30 mWD4, R5

VOUT ≥ 12 V

FLY-BACK / FF

NON ISOLATED







(automatic restart)

C6

R4

R2

+C1

C3 C4

R3

+C5

D3L1

FB

DRAIN

GND VDDCOMP LIM

VIPER x6

D2

D1

+C2

R1

Controller

T1

GND

VOUT

+

-

D4

R5

VIPer06 / 16 / 26

Feedback disconnection

(automatic restart)


08/11/07 – REV. 2


C6

R4

R2

+C1

C3 C4

R3

+C5

D3

L1

FB

DRAIN

GND VDDCOMP LIM

VIPER x6

D2

D1

GND

+C2

R1

AC INVOUT

Controller

T1

D4

R5

+

-

VOUT < 12 V

FLY-BACK / FF

NON ISOLATED


Need auxiliary windingC4 + AUX





(automatic restart)

VIPer06 / 16 / 26



(automatic restart)


08/11/07 – REV. 2


C6

R4

R2

+C1

C3 C4

R3

+C5

D3

L1

FB

DRAIN

GND VDDCOMP LIM

VIPER x6

D2

D1

GND

+C2

R1

AC INVOUT

Controller

T1

D4R5

+

-


(automatic restart)

No need the optocoupler

FLY-BACK / FF

PRIMARY REGULATION


Need auxiliary windingC4 + AUX





(automatic restart)

VIPer06 / 16 / 26



08/11/07 – REV. 2


23

VIPer06 / 16 / 26

IC3

R4

R4

IC2

C7

R3

C6R2

+C1

C3

C4

+C5

D3

L1

FB

DRAIN

GND VDDCOMP LIM

VIPER x6

D2

D1

GND

+C2

R1

AC INVOUT

Controller

T1

D4R6

+

-

R5

C6

FLY-BACK / FF

ISOLATED

Minimum components count






(automatic restart)


08/11/07 – REV. 2


24

IC3

R4

R4

IC2

C7

R3

C6R2

+C1

C3

C4

+C5

D3

L1

FB

DRAIN

GND VDDCOMP LIM

VIPER x6

D2

D1

GND

+C2

R1

AC INVOUT

Controller

T1

D4R6

+

-

R5

C6


(automatic restart)

FLY-BACK / FF

ISOLATED


Auxiliary windingC4 + AUX





(automatic restart)

VIPer06 / 16 / 26

Stand-by optimization , 30 mWAUX + D4, R5


08/11/07 – REV. 2


25

30mW Stand-by

FLY-BACK / FF

ISOLATED


Low cost EMI filterC1,C2, L1

Low cost clamp componentsR2,C6,D2

Short circuit protection No need ext components

2nd Over Current protectionNo need ext components

Default current limit400mA / 700mA / 1000mA

VIPer17 / 27 / 37

IC3

R4

R4

IC2

C7

R3

C6R2

C3

C4

+C5

D3

VDD

DRAIN

GND FBBR CONT

VIPER x7

D2

GND

VOUT

Controller

T1

D4R6

R5

C6

+C1

L1

+C2AC IN

F

NTC


08/11/07 – REV. 2


26







<400mA or <700mA or <1000mA

30mW Stand-by

RLIM

IC3

R4

R4

IC2

C7

R3

C6R2

C3

C4

+C5

D3

VDD

DRAIN

GND FBBR CONT

VIPER x7

D2

GND

VOUT

Controller

T1

D4R6

R5

C6

+C1

L1

+C2AC IN

F

NTC

FLY-BACK / FF

ISOLATEDVIPer17 / 27 / 37


08/11/07 – REV. 2


27

Over Voltage Protection (VOUT)RLIM , ROVP , DOVP







<400mA or <700mA or <1000mA

30mW Stand-by

RLIM

ROVP

DOVP

IC3

R4

R4

IC2

C7

R3

C6R2

C3

C4

+C5

D3

VDD

DRAIN

GND FBBR CONT

VIPER x7

D2

GND

VOUT

Controller

T1

D4R6

R5

C6

+C1

L1

+C2AC IN

F

NTC

FLY-BACK / FF



08/11/07 – REV. 2


28

Brown out set-up (VINDC)R7,R8, C6







30mW Stand-by

C6

R8

R7

IC3

R4

R4

IC2

C7

R3

C6R2

C3

C4

+C5

D3

VDD

DRAIN

GND FBBR CONT

VIPER x7

D2

GND

VOUT

Controller

T1

D4R6

R5

C6

+C1

L1

+C2AC IN

F

NTC

FLY-BACK / FF



08/11/07 – REV. 2


29








<400mA or <700mA or <1000mA

Brown out set-up (VINDC)R7,R8, C6

30mW Stand-by

RLIM

ROVP

DOVP

IC3

R4

R4

IC2

C7

R3

C6R2

C3

C4

+C5

D3

VDD

DRAIN

GND FBBR CONT

VIPER x7

D2

GND

VOUT

Controller

T1

D4R6

R5

C6

+C1

L1

+C2AC IN

F

R7

R8

C6

NTC

FLY-BACK / FF



08/11/07 – REV. 2


30

Extra Power TimerCEPT

FLY-BACK / FF

ISOLATED







30mW Stand-by

IC3

R4

R4

IC2

C7

R3

C6R2

C3

C4

+C5

D3

VDD

DRAIN

GND FBEPT CONT

VIPER x8

D2

GND

VOUT

Controller

T1

D4R6

R5

C6

+C1

L1

+C2AC IN

F

CEPT

NTC

VIPer28


08/11/07 – REV. 2

Schematics with VIPer x5

31

Feed-ForwardRFF


FLY-BACK / Quasi Res.

ISOLATED







≤400mA or ≤700mA or ≤1000mA

Zero current Detection (QR)RLIM , ROVP , DOVP, RFF

30mW Stand-by

IC3

R4

R4

IC2

C7

R3

C6R2

C3

C4

+C5

D3

VDD

DRAIN

GND FBBR ZCD

VIPER x5

D2

GND

VOUT

Controller

T1

D4R6

R5

C6

RLIM

DOVP

ROVPRFF

+C1

L1

+C2AC IN

F

NTC

VIPer15 / 25


08/11/07 – REV. 2 32

Product description – Altair family

ALTAIR

Altair04-900 and Altair05T-800 are suitable for

SMPS for energy metering / energy monitoring (HBA)

Auxiliary power supplies for 3-phases input industrial systems

AC-DC adapters requiring a precise current and/or voltage

regulation (including home appliances)

AC-DC chargers for mobile phones and other hand-held

equipments

PERFORMING PRIMARY CONTROL WITHOUT NEED OF

OPTOCOUPLER IN STANDARD ISOLATED QR FLYBACK

CONFIGURATION

FOR OUTPUT POWER BELOW 10W

08/11/07 – REV. 2 33

Compatibility with 3-ph mains voltage, either functional (the SMPS has to work connected to a 3ph line)

or surviving (wrong connection, P to P instead of P to N)

To provide output voltages to supply:

microcontroller (3.3V) like STM32

PLM like ST75xx family (up to e.g. 13V / 0.7Arms) or GPRS/ GSM modem (e.g. 13V / 300mA)

Metrology AFE, like STPMxx family (5mA at 3.5V / phase)

High efficiency at low load (between 10 and 20% of nom.) as the AMR lays in this condition for the

majority of the time. More than 95% of the time the communication is in Receiving mode where the

consumption is low. E. g. PLC is 150mW in receiving mode and > 7W in Tx mode.

SELLING POINTS:

• (800/) 900V MOSFET RELIABILITY + BOM REDUCTION + COMPLIANCY WITH

SYSTEM SPECS

• COMPACTNESS

• EXTREMELY LOW COST (NO NEED OF OPTO)

• Altair04 more suitable

Metering / energy monitoring:

market needs

08/11/07 – REV. 2

EVLALTAIR05T-5W and EVLALTAIR900-M1

Typical Applications:

Electricity meterIndustrial control

Documentation:AN3093 - ALTAIR05T-800 5 W wide range CV-CC optoless adapter demonstration board (soon to be published)

AN3290 - Double Output SMPS for Power Line Modem Applications using ALTAIR04-900 Primary Controller (soon to be published)

Board Purpose:Product evaluation

Key Products:

Altair04-900

Altair05T-800

STTH108, STPS1L60A, STPS1150,

STTH1L06, STPS3L400F

Input voltage range (VIN) 90 - 265 VAC / 50-60Hz

Maximum (rated) output power 5W (5 V ± 5% / 1 A)

Minimum switching frequency in normal mode 70 kHz

Target average efficiency (at POUT = 5 W, VIN = 90 - 264 VAC) > 70%

Maximum input power in standby < 100 mW

EVLALTAIR05T-5W

EVLALTAIR900-M1

08/11/07 – REV. 2

Adaptation to ultra-wide range operation

The EVLALTAIR900-M1 was designed to work with input voltage up 265VAC.

It is possible to modify it according to below indications to extend the input working operating range

up to 440VAC

Std 265VAC input

Extended 440VAC input

08/11/07 – REV. 2

VIPerPlus in “eDesign Studio”

36

“eDesign studio” (www.st.com/edesignstudio) supports the design of Viper*6,

Viper*7 and Viper28 providing:

BOM

Stability diagram

Efficiency and standby

Waveform and thermal simulator

in flyback and buck topologies

for SMPS and LED drivers

A project created can be exported and

worked by another PC

(ST to customer as proposal,

customer to ST for checking)

Viper*5 family will be added to the eDesign studio by the end of 2011

http://www.st.com/edesignstudio

08/11/07 – REV. 2 37

POWER

FACTOR

CORRECTION

08/11/07 – REV. 2

Power factor correction – why and when

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.

08/11/07 – REV. 2 39

IL

IAC

ONMOSFET

OFF

"CCM" typeIL

IAC

ONMOSFET

OFF

"TM" type

Continuous conduction mode = IL

never falls to zero

Fixed frequency, duty cycle

modulation

Average current mode control,

complexity, high performance,

higher cost.

Suitable for higher power levels

Operation on the boundary between

continuous and discontinuous

conduction mode, @ZVS

Variable switching frequency,

constant TON

Peak current mode control, simple,

low-cost.

Suitable for lower power levels

Power factor correction standard methods

08/11/07 – REV. 2

PFC control method: fixed-off-time (FOT)

40

TURN-OFF PWM COMPARATOR (current peak)

TURN-ONINDUCTOR DEMAGNETIZATION(Aux. winding or RC on the drain)

TURN-ON

TURN-OFF

R-C NETWORK DISCHARGING

CONSTANT TOFF

TYPICAL QR CONTROL

TRANSITION MODE (boundary between DCM and CCM)

ON

OFFSwitch

DCM DCM

CCM

PWM COMPARATOR (current peak)

Benefits:

High efficiency (>92%)

Simple and cheap control (using L656* family)

Reduced part count compared to CCM fixed frequency

08/11/07 – REV. 2 41

C

C

M

L6561TM PFC

8pinOVP stat./dyn.

L6562IMPROVED

TM PFC

L6561 pin-to-pin

Improved THD

Extended supply range

Powerful gate driver

L6563/SADVANCED

TM PFC

TBO

FDBK disconnection

Brownout

Reduced consumption

PWM interface

Input volt. Feedforward

L4981A/BAVG CURRENT

MODE PFC

Input voltage Feed-forward

Load Feed-forward

Progr. Turn-On Threshold

OVP & Over-current Protection

L6562ATM PFC

L6562 enhanced

Lower CS threshold

New gate driver

Higher efficiency at

light load

L6563/HHigh voltage

start-up

T

M

L6564TM PFC

L6562A enhanced

Input volt. Feedforward

PWM interface

STM PFC portfolio

Power factor correction - controller

400VDC

Output power >200W

L4981 in CCM

L6562A / 3S / 3H / 4 in fixed-off-time

L6562A / 3S / 3H / 4 in ripple-steering

Output power <150W – 200W

L6562A / 3S / 3H / 4 in transition mode

Power factor

controller

100W80W

400W 3KW

SPEADSHEETS AVAILABLE

Power factor correction – mosfet and diode

400VDC

MOSFET (>500V breakdown)

High power (>1kW) MDMesh5

e.g. STP42N65M5 for ~2KW

Medium power (100W to 1KW) MDMesh2

e.g. STx25NM50M for ~400W

Lower power (<100W) SuperMesh3

e.g. STx10N62K3 for ~60-70W

Power factor

controller

RECTIFIER (600V reverse voltage)

SiC (Silicon Carbide) STPSCxx06

Turbo 2 STTHxxR06

Tandem diode STTH806DTI

SiC = $$, high efficiency

STD = $, lower efficiency

The reverse recovery charge

08/11/07 – REV. 2

30 dB differential-mode attenuation achievable (150 kHz ÷ 2-3 MHz)

Differential-mode chokes & Cx caps minimized or even removed (so are related losses)

Allows usage of TM operation at higher power levels

No change as far as control is concerned

Ripple-steering

Vout

Vin

L

M

D

Cs

Vin

Iin(t)

Iac(t)

GD

GD

ZERO RIPPLE CURRENT

To reduce the high input ripple current (typ. of transition-mode-operated PFC) requiring a large differential mode (DM) line

filter to meet EMI requirements..

PFC control method: ripple-steering

200W ZRC Boost PFC Pre-reg

• 88 to 264 Vac input, 400 V / 0.5 A output

• TM-operated boost converter (L6563S)

• EN61000-3-2 and JEITA-MITI compliant

• EN55022 Class B Conducted EMI compliant

• Total Cx capacitance >3 times smaller

ZRC TM boost PFC pre-regulator

Order code: EVL6563S-200ZRC

Doc: AN3180 A 200W ripple-free input current PFC pre-

regulator with the L6563S

3 kW CCM PFC Pre-regulator

• 180 to 264 Vac input, 400 V / 7.5 A output

• FOT-operated boost converter (L6563)

• EN61000-3-2 compliant

• EN55022 Class B Conducted EMI compliant

• Fixed-off-time (FOT) control

100

10

1

0.1

0.01

0.00195

96

97

98

99

100

175 195 215 235 255 275

Pout = 3 kW

Pout = 1.5 kW

Pout = 300 W

Pout = 150 W

Vin [Vrms]

h

FOT-CCM boost PFC pre-regulator

Order code: STEVAL-ISF001V1

Doc: AN2951 3 kW fixed-off-time (FOT) power factor correction

08/11/07 – REV. 2

Available Tools

47

APPLICATION NOTES:

AN3009 : HOW TO DESIGN A TRANSITION MODE PFC REGULATOR USING THE L6564

http://www.st.com/stonline/products/literature/an/16032.pdf

AN3112: SOLUTION FOR DESIGNING A FIXED OFF TIME CONTROLLED PFC PREREGULATOR WITH THE L6564


SOFTWARE TOOLS:

DESIGNING A TM PFC USING THE L6564 (AVAILABLE UPON REQUEST)

http://ims.st.com/pub/documents/ipc/off-line_power_supply/software/L6564TMPFC_release20.xls

DESIGNING A FOT PFC USING THE L6564 (AVAILABLE UPON REQUEST)

http://ims.st.com/pub/documents/ipc/off-line_power_supply/software/L6564FOTrelease20.xls

L6564 L6563S L6563H

APPLICATION NOTES:

AN3027 : HOW TO DESIGN A TRANSITION MODE PFC REGULATOR WITH THE L6563S AND L6563H


AN3142: SOLUTION FOR DESIGNING A FIXED OFF TIME CONTROLLED PFC PREREGULATOR WITH THE L6563S AND L6563H

SOFTWARE TOOLS:

DESIGNING A TM PFC USING THE L6563S (AVAILABLE UPON REQUEST)http://ims.st.com/pub/documents/ipc/off-

line_power_supply/software/L6563S_H_TMPFC_release30.xls

DESIGNING A FOT PFC USING THE L6563S (AVAILABLE UPON REQUEST)http://ims.st.com/pub/documents/ipc/offline_power_supply/software/L6563S_H_FOTrelease

30.xls

DEMO BOARDS:

EVL6563H-100W ( AN3063 )

EVL6563H-250W ( AN3118 )

EVL90WADP-LLCSR ( AN3014 )


EVL6599A-90WADP ( AN3172 )

EVL6563H-FOT-650W ( coming soon – week 40 – Schematic available )

DEMO BOARDS:

EVL6563S-100W ( AN3065)

EVL6563S-200ZRC (AN3180) Zero Ripple Input Current

EVL6563S-250W ( AN3119)

EVL6563S-400W ( AN2994 )


EVL6563S-FOT-650W (COMING SOON – WEEK 40 –Schematic available)

DEMO BOARDS:

EVL6564-100W ( AN3022 )















http://ims.st.com/pub/documents/ipc/off-line_power_supply/software/L6563S_H_TMPFC_release30.xls



http://ims.st.com/pub/documents/ipc/offline_power_supply/software/L6563S_H_FOTrelease30.xls

http://ims.st.com/pub/documents/ipc/offline_power_supply/software/L6563S_H_FOTrelease30.xls







PWM and HV converters for

AC-DC conversion

49

Fixed frequency PWM

Summary of topologies

PWM controller Resonant

PWM controller

FF or Quasi-resonant(typically not above 100W)

PWM controller

50

L6565Q-Resonant

Controller

L6566A/BPWM & Q-Res

Controller

L5991/AAdvanced PWM

Controller

L6668Smart Primary

PWM Controller

L6591ZVS HB

PWM Controller

700V start-upPFC interfaceBurst-modeImproved Stand-by

600V Level-shifter700V start-upPFC interfaceBrownout

Selectable Q-Res or PWM700V Start-upPWM with frequency mod.Supporting single stage

PFC

100W – 700W

Up to 90W

L6599AAdvanced HV

Resonant Controller600V Level-shifterBootstrap DiodePFC interfaceBurst-modeBrownout

100W – 700W

90W – 400W

Up to 90W

Po

we

r

L6598HV Resonant

Controller600V Level-shifterBootstrap Diode

UC384xBStandard PWM

Primary converter portfolio

D:/Local Settings/Temporary Internet Files/Content.IE5/Local Settings/Giuseppe Gattavari/My Documents/PRESENTAZIONI/cpior04/5yplan/5ybyapps.xls



51

Fixed frequency PWM



PWM controller


PWM controller

52

Applications:

high efficiency SMPS for industrial application

starting from 90W

LED Streetlight SMPS

Telecom SMPS

Audio application

LCD and PDP TV

Desktop PC, entry-level server

Vin

Vout

L6599AL6562A

L6563/x

Compared to L6591, better for:- higher output voltage & lower

output current- EMI-friendly application- Where variable freq is not an

issue

ZVS resonant Converter

L6599A: HB ZVS resonant Primary Controller

soft-switching half-bridge converter.

Zero-voltage switching eliminates turn-

on switching losses (smaller mosfet

and/or smaller heatsink) and

minimizes EMI emissions (and filter

cost)

PWM control, variable frequency.

Both switches are driven ON for 50%

duty cycle

SUPPORT TOOLS

Excel spreadsheet

available for the

design

Ref designs from

90W to 400W

available (with

relevant application

notes)

…the power parts for resonant stage

54

PWM mosfet

- BRVDss > 500V

- MDMesh2 / 5 for high efficiency

(only conduction losses Rds(ON))

Power Schottky (STPSx family)

- Rated voltage: according to

input/output voltages ratio,

generally dozens of V

- Current according to the power

- Low recovery

- Low leakage current

- Avalanche capability

specification

Power QFN package:

more power density

08/11/07 – REV. 2 55

SR: how it is made?

Where SR is used: rectification stage on the secondary side of SMPS.

Typically the rectification is done with power Schottkies, which however have a big limitation: the VF is quite high (0.3V and higher)

high conduction losses, impact on efficiency!

SR shows the

highest efficiency!

From diode-based to mosfet-based

secondary rectification stage

L6599A + SRK2000 + MOSFET:

increasing the efficiency

56

2 x Vout breakdown

MOSFET

STripFETTM VI DeepGATETM

Updated Product Portfolio (60/75/80V)

H2PAK

2-leads TO-220

Part Number BVDSS RDS(ON) max Package Status Released in

STP260N6F6 60V 3.0m TO-220 MP 1Q11

STH260N6F6-2 60V 2.0m H2PAK (*) MP 1Q11

STP210N75F6 75V 3.7m TO-220 MP 1Q11

STH210N6F6-2 75V 2.8m H2PAK (*) MP 1Q11

STL75N8LF6 80V 7.4m PowerFLAT5x6 MP 2Q11

(*) 2 Source -leads version

PowerFLAT 5x6

PowerFLAT 5x6

Low thickness/weight

Low Rthj-c thermal resistance

Thermal performance similar to D2PAK

Low parassitic inductance

Low parasitic package resistance

Multiple sources

Small form-factor

High power capability

Less parasitic losses

High switching frequency operation

High current handling

Top side heat dissipation

Key Features Benefits

D G

S

S

S

59

Fixed frequency PWM



PWM controller


PWM controller

Standard flyback

Multimode controllers (FF or QR).

High efficiency / Low standby (<200mW)

L6566A with PFC front-end

L6566B std flyback

L6566BH On-board 800V high-voltage start-up for

industrial range

Fixed frequency flyback

L6668 advanced std flyback controller (UC384x-like)

60

PWM controller

EVAL board from

40W to 75W

Applications:

Auxiliary SMPS for industrial application in PV,

servers, building automation

Power Schottky (STPSx family)

- Rated voltage: according to

input/output voltages ratio, generally

dozens of V

- Current according to the power

- Low recovery / leakage current

- Avalanche capability specification

Power Mosfet

Breakdown > 800V (for Eu range)

SuperMesh3 (e.g STx7N95K3)

61

Voltage control loop implementation

62

Current control loop implementation

63

CC / CV controllers

Integrated solution for SMPS application requiring a precise Constant Current

(CC) and Constant Voltage (CV / or voltage control) regulation.

Integrated

precision

voltage reference

Op-Amp for

current control

Op-Amp for

voltage control

+ SEA05 Integrated Vcc = 3.5V to 36V

Icc=200uA

Vref = 2.5V 0.5% precision including voltage input offset of op-amp

Vsense=50mV, 2% precision including voltage input offset of op-amp

TSx431 programmable shunt voltage reference (only voltage control), high

precision and low consumption within the industrial temperature range.

08/11/07 – REV. 2

CC / CV controller

64

TSM1052

Vctrl

GND

VsenseIctrl

OUT

Vcc

1.210 V

200 mV

+

-

+

-

+

1

2

3

54

6

Vcc = 1.7V to 18V

Icc=150uA

Vref = 1.21V 1% precision including

voltage input offset of op-amp

Vsense=200mV, 2% precision including

voltage input offset of op-amp

SOT23-6L

SEA05

Vcc = 3.5V to 36V

Icc=200uA

Vref = 2.5V 0.5% precision including voltage

input offset of op-amp

Vsense=50mV, 2% precision including voltage

input offset of op-amp

DC-DC

CONVERSION

08/11/07 – REV. 2

eDesign studio

1. Go to st.com support tools & resources (see below arrows) SW tools simulators

& CAE resources simulators

2. Click on SMPS eDesign Studio on the next page

3. Login on my.st.com (register yourself if not yet done)

The external version works

only on-line.

UPgrades are guaranteed.

It is also possible a direct

access by typing

www.st.com/edesignstudio

1

2

08/11/07 – REV. 2

Application specs and start the design

1. Insert application specs

2. Select the

device amongst

the proposed

ones (filtered

according to

input/output

values)

3. Start design

08/11/07 – REV. 2

DC-DC section

Defined specs

Components that can be fine-

tuned (in blue)

Operating point

(settable)

Waveform

simulator

efficiency Bode’s plot Losses split

Standard functions

08/11/07 – REV. 2

DC-DC overviewSTEP-DOWN monolithic (= current limited, small area)

Example: up to 36VDC – L597x family(suitable also for inverting / positive buck-boost)

Same approach with:

L497x family: Vin up to 63VDC

ST1Sxx family: Vin up to 48VDC

L6902 family: Vin up to 36VDC



STEP-UP

ST8R00: Vout till 12VDC

L6920: Vout up to 5.2VDC

STEP-DOWN controller (=flexible solution for higher current)

L6727 DC-DC controller

LL mosfet (upgrade for higher current)

free-wheeling diode (upgrade for higher current)

(example)

08/11/07 – REV. 2

Different families positioning

70

L497* and L597* families

Fsw up to 500KHz

VOUT down to 0.5V

IOUT up to 2A output

SO8 / HSO8 / DIP

L598* and L798* families

Fsw up to 1MHz

suitable for MLCC

VOUT down to 0.6V

IOUT up to 3A output (synch mosfet)

QFN / HSOP8

ST1S* family

Fsw up to 1.5MHz

VOUT down to 0.8V

IOUT up to 2A output (synch mosfet)

Internal compensation network

DFN / HSOP8

08/11/07 – REV. 2

QFN 3x3 8L - Rth j-amb 60°C/W

Device Package Ipk [A] Iout [A] Vin [V] Vout [V] Fsw [kHz] Extra Functions

L5980 QFN3x3-8L 1 0.7 2.9V to 18V 0.6V to Vin 250 Inh, AdjFsw, Sync

L5981 QFN3x3-8L 1.5 1 2.9V to 18V 0.6V to Vin 250 Inh, AdjFsw, Sync

L5983 QFN3x3-8L 2 1.5 2.9V to 18V 0.6V to Vin 250 Inh, AdjFsw, Sync

L5985 QFN3x3-8L 2.5 2 2.9V to 18V 0.6V to Vin 250 Inh, AdjFsw, Sync

L5986/A QFN3x3-8L / HSOP8 3 2.5 2.9V to 18V 0.6V to Vin 250 Inh, AdjFsw, Sync

L5987/A QFN3x3-8L / HSOP8 3.5 3 2.9V to 18V 0.6V to Vin 250 Inh, AdjFsw, Sync

HSO8 - Rth j-amb 40° C/W

P-channel power MOS: no bootstrap capacitor

Wide input voltage range (2.9V up to 18V)

High switching frequency (250KHz, adjustable up to 1MHz) with Synchronization capability (180° out of phase)

Internal Soft-start

Inhibit pin

Embedded protection features

Suitable for MLCC output filter

Typ RDSon=140mΩ

L5980

QFN8 3x3

0.7A / up to 1MHz

L5981

L5983

L5985

1A / up to 1MHz

1.5A / up to 1MHz

2A / up to 1MHz

L5986/A

L5987/AQFN8 3x3 3A / up to 1MHz

2.5A / up to 1MHz

* Low cost versions with cheaper testing procedure

L598* family

08/11/07 – REV. 2

Synchronous rectification with P-channel power MOS: no bootstrap capacitor

Wide input voltage range (2.9V up to 18V) High switching frequency (400KHz, adjustable up

to 1MHz) Adjustable Soft-start and Inhibit function Embedded over current (adjustable threshold),

over voltage and thermal protection PGood signal (L5989D) Synchronization

capability(180° out of phase) (L5988D) Pre-bias start-up capability Multifunction pin (adjustable UVLO, latched/no

latched OVP and sink-mode capability) 1.8v ± 2% reference voltage Suitable for MLCC output filter

L5988DHTSSOP16

up to 4A /

up to 1MHz

L5989D

L5988 / 89 key features

08/11/07 – REV. 2

More than 3A in both small QFN3x3-8L and HSOP8 packages with minimum external component count

P-channel power MOS: no bootstrap capacitor

Wide input voltage range (4.5V up to 28V)

High switching frequency (250KHz, adjustable up to 1MHz) with Synchronization capability (180° out of phase)

Internal Soft-start

Enable pin

Embedded protection features

Suitable for MLCC output filter

Typ RDSon=180mΩ

L7981

L7980 2A / up to 1MHz

3A / up to 1MHzQFN8 3x3 HSOP8

L7980 and L7981 key features

08/11/07 – REV. 2

PWM fixed frequency 0.75MHz.

Output Current Capability: 3A max over all operating conditions

Output Voltage: Adjustable from 1.22V to 90% of max Vin

Input Voltage: from 5.5V to 48V

Power Good

Soft-Start circuit to reduce inrush current

Efficiency: up to 95%

Fast Transient Response

Both Enable and inhibit pins available

HSOP8 Package

ST1S14 3A / 0.75MHz

ST1S14 key features

08/11/07 – REV. 2

Comparison table Vin up to 18VDevice

L598x L5988-9D ST1S03/A ST1S10 ST1S31/2 ST1S21/2 ST1S40

Feature

Input Voltage (V) 2.9 to 18 2.9 to 18 3 to 6/16 2.5 to 18 2.7 to 6 4 to 18 2.5 to 18

Output Voltage (V) 0.6 to Vin 0.6 to Vin 0.8 to 12 0.8 to 15 0.8 to Vin1.25 to 90%Vin

0.8 to Vin

Iout (A) Up to 3 4 1.5 3 Up to 4 Up to 3 Up to 4

Package DFN3x3-8L HTSSOP16 DFN3x3 6LDFN4x4-8L/

HSOP-8L

DFN4x48L

DFN3x38L

HSOP-8L

DFN3x3-8L/

HSOP-8L

DFN4x4-8L/

HSOP-8L

Synch rect. -- Yes -- Yes Yes -- Yes

Rdson (typ. mΩ) 14075 (HS)-

65 (LS)260

100 (HS)

120 (LS)

50 (HS)

50 (LS)150

70 (HS)

90 (LS)

Fsw (kHz)

250

Adj up to 1000

400

Adj 200 to 1000

1500 900 1500 1000 800

Soft StartInternal digital

Adj Internal digital

Internal digital

Internal digital

Internal digital

Internal digital

Synchwith phase shift 180°

with phase shift 180°

-- Yes -- -- --

MLCC as Cout Yes Yes Yes Yes Yes Yes Yes

Enable/INH Yes Yes -- Yes Yes Yes Yes

Vref -- Yes -- -- -- -- --

08/11/07 – REV. 2

Comparison table Vin > 18V

DeviceL597x L497x L7980/1 L7985/6 ST1S14 ST1S20

Feature

Input Voltage (V) 4.4 to 36 8 to 55 4.5 to 28 4.5 to 38 5.5 to 48 5 to 30

Output Voltage (V) 0.5 to Vin 0.5 to Vin 0.6 to Vin 0.6 to Vin1.22 to 90%Vin

0.8 to 85%Vin

Iout (A) Up to 2 Up to 3.5 Up to 3 Up to 3 3 6

Package SO-8/HSOP8DIP8/SO16

DIP16/SO20

DFN3x3-8L/

HSOP-8L

DFN3x3-10L/

HSOP-8LHSOP8

HPAK-7L/

DFN5x4-16L

Synch rect. -- -- -- -- -- --

Rdson (typ. mΩ) 250 150 180 150 200 100

Fsw (kHz) 250 Up to 300

250

Adj up to 1000

250

Adj up to 1000

750 700

Soft Start -- AdjInternal digital

Internal digital

Internal digital

Internal digital

Synch Yes Yes with phase shift 180°

with phase shift 180°

-- Yes (DFN)

MLCC as Cout -- -- Yes Yes Yes Yes

Enable/INH Yes Yes Yes Yes Yes Yes (DFN)

Vref Yes Yes -- -- -- --

SPV1001

The innovative Cool Bypass Switch (CBS)

for Photovoltaic Inverters

08/11/07 – REV. 2 95

Bypass Diode: What is it?

In a photovoltaic (PV) system, the panel which receives the lower sunlight determines the current value which flows through the whole string of panels (series-connected).

If a panel is shadowed (due to clouds, leaves etc), it will reduce the power generated by the whole system it acts like a resistor in an electric circuit!!

The no-shadowed panels will force through the shadowed one a current which can cause damage through overheating (hot-spot phenomenon)

The hot spot issue is generally prevented through the use of bypass diodes, which simply bypass the shadowed panel strings.

08/11/07 – REV. 2 96

The Cool Bypass Switch of ST

The use of by-pass diode increase the efficiency and lifetime of PV module but introduces further dissipations which should kept as low as possible

The SPV1001 is an innovative device based on a MOS-structure, having the same functionality of a Schottky diode but with much better performances

Compared to conventional Schottkies, the SPV1001 has a much lower

voltage drop in conduction state and much

lower leakage current in reverse state

overall power dissipation is significantly reduced!

Innovative Cool Bypass Switch

CATHODE

ANODE

CATHODE

ANODE

Standard Schottky diode

lower dissipation means cooler

temperature, resulting in longer life time

08/11/07 – REV. 2 97

0

1

2

3

4

5

1 2 3 4 5 6 7 8 9 10

Po

we

r D

issi

pat

ion

[W

]

Biasing Current [A]

SPV1001

Schottky #2 (Lower Vf, Higher Ir)

Schottky #1 (Higher Vf , Lower Ir)

CBS vs conventional Schottkies

8A

A= SCHOTTKY #2

B = SCHOTTKY #1

C = SPV1001

Compared vs two Schottkies with different Forward Voltage & Leakage Current Tradeoffs at 8A (typical working current in 6 inch solar cell):

• Power Dissipation in CBS is one third (1W vs 3W)

• CBS works ‚cold‘ (- 40°C less than best Schottky)

Thermal Map at Silicon Level

08/11/07 – REV. 2 98

Conclusions SPV1001

Key Features

• CBS has very low VF & IR

• IF=15A, two voltage ratings: VR=30V & 40V

• 175°C max junction temperature

• TO220, D2PAK & MLD packages

Key Benefits

• CBS has less power dissipation vs conventional schottky diodes

• Lower power dissipation means cooler temperature

longer life time

higher reliability

SPV1040 o 1020

Solar charger

08/11/07 – REV. 2

Key features

What is the new SPV1040?

100

The SPV1040 is a high efficient monolithic step-up DC-DC converter

powered by just a few solar cells for battery charging of low power

applications.

At the same time ithe device provides highest safety for the battery

and the system thru implemented over-current and -temperature

protection.

This device is designed for energy harvesting (from the sunlight) and

is using an internal MPPT (Maximum Power Point Tracking)

algorithm in order to reach highest efficiency up to 95%.

But what means MPPT?

ZDC

SPV1040

Rout

Cin

Iin

Vin Vout

PV

Panel

Vin

Cout

Iout

08/11/07 – REV. 2

MPPT: What it is & how does it work?

101

MPPT stands for „Maximum Power Point Tracking“. It is a method to determine

the optimum working point of a solar cell string or the complete panel in order to

get the maximum power out of it. This optimized working point can change

and depends from different external factors like shading, dust, leaves, defect cells

etc.

e.g. during the shading of some parts of a panel (one or several strings with solar

cells in series) the shaded cells will not supply enough power and the overall DC

output of the complete system will be reduced. This has a not negligible impact on

the the output power (P = U x I).

An efficient MPPT algorithm is called „Perturb & Observe“ method and is used in

the SPV1040.

Perturb & Observe method?typ. PV-cell

characteristic

08/11/07 – REV. 2

MPPT: “Perturb & Observe” Method

102

Perturbation and Observation:

MPPT algorithm is changing the Duty Cycle (DC)

to detect the maximum power point:

STEP 1: DC is increasing from A to B....

STEP 2: While further increasing DC, the power in

state C is still higher...

STEP 3: Increasing DC toward D, at this point

lower power is detected...

STEP 4: MPPT logic is decreasing DC passing C,

and detect lower power at B.

STEP 5: DC is increasing again...

08/11/07 – REV. 2

Key features

High-efficiency monolithic step-up DC-DC converter

Proprietary “Perturb and Observe” embedded MPPT

algorithm

Very low input voltage (down to 0.3 V)

Very low RDS(on) integrated N-MOSFET and P-MOSFET

Over-current and over-temperature protection

Input reverse polarity protection

Main benefits

Energy harvesting

Up to 95% efficiency

Optimized battery charging profile

Suitable for low-power applications

powered by only a few solar cells

Battery and system safety guaranteed

SPV1040: Solar Battery Charger

103

08/11/07 – REV. 2

eDesign Studio Software Support Tool

eDesign Studio enhances development by implementing guidelines for

components selection to achieve the best system trade-off and to simulate

application performance.

104

08/11/07 – REV. 2

What is the typical application?

Home lighting

PV Charger

Portable consumer devices and toys

Solar lanterns

Digital still cameras

Portable healthcare, sensors

Watches

Thermometers

Wireless headsets

Car remote controls and locks

Small appliances (e.g. shaver charger)

Key applications

System evaluation board (STEVAL-ISV006V2 )

Low-power solar-battery charger

105

08/11/07 – REV. 2

PV Charger for small power

applications

Key applications

Key products

SPV1040: high-efficiency solar battery

charger with embedded MPPT

L6924D: charge controller for Li-ion

batteriesDemo board (STEVAL-ISV012V1)

Solar cell

SPV1040

MPPT

+

Step-up

converter

L6924

Li-ion

battery

charger

Solar-Li-ion battery charger

Lithium-ion solar battery charger

106

http://www.st.com/internet/analog/product/251161.jsp

http://www.st.com/internet/analog/product/103931.jsp

08/11/07 – REV. 2

SPV1040:

Technical Documentation and Promo Package

Available

NOW

107