HV Converters. October Alexander Kvashin

Transcription

1 HV Converters October 2012 Alexander Kvashin

2 3 Solutions for low-medium power SMPS Primary Controllers Secondary Controllers HV Converters AC Controller MOSFET VIPer Plus ALTAIR Sync. Rectification RECTIFY Efficiently (optional) Replacement of the diode CC/CV REGULATE Constant Voltage & Current (Adapters, Chargers,..) DC HVLED805

3 4 High Voltage Converters Applications (animated slide) HV Power MOSFET Avalanche Ruggedness 800V.break down voltage On Resistance from 30W to 1W Integrated HV start-up Integrated thermal shutdown Off Line Controller PWM current mode controller with drain current limitation Easily meet current no-load consumption and efficiency standards Oscillator with Fixed Frequency with Jittering or Quasi Resonant Advanced Protection For 4W For Meter For 5W 5W Charger or LED 3ph auxiliary : Light ALTAIR05T-800 : HVLED805 supplies : ALTAIR High efficiency solution for Power Supply with minimized components count Industrial 3W 10W Consumers 1W Home appliances 5W 15W Lighting Power meters Chargers 30mW

4 5 ST HV Converters Key benefits The more energy saving approach Minimized stand-by consumption (<30mW) High switching efficiency The more reliability approach 800V & 900V Avalanche rugged MOSFET Integration of advanced protections

5 6 HV Converters Roadmap In production *Production Q1-12 **In development 2012 Portfolio FIXED FREQUENCY QUASI-RESONANT R ON P OUT Package ISOLATED ISOLATED (PEAK POWER) NON ISOLATED ISOLATED (Opto-less) ISOLATED 30W 3W SSO10 DIP7 SO16N VIPER06* ALTAIR05T-800 & HVLED805 24W 5W SO16N DIP7 VIPER17 VIPER16 ALTAIR VIPER15 7W 10W SO16N DIP7 DIP10 VIPER27 VIPER28 VIPER26 VIPER25 4.5W 15W DIP10 VIPER37 VIPER38** VIPER35**

6 Features differentiation 7

7 Selection by Topologies 8

8 9 E-DESIGN STUDIO SMPS DESIGN TOOL edesignstudio is a SW platform that helps and speeds-up the design-in of our products for power conversion in different sub-applications: Power Supply (AC-DC or DC-DC) LED Driver (AC-DC or DC-DC) Photovoltaic Besides generating the circuit BOM, it provides information like e.g. efficiency and stability. up to 5 outputs!

9 10 Where to find it 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) It s also possible to access the tool directly by typing: The external version works on-line only. No software must/can be downloaded. Upgrades are guaranteed.

10 11 A complete design in a few steps 2. Create a new project and choose an application type 1. Login to (after online registration) 3. Input your specifications 4. The design is ready!

11 12 Helps select the optimal IC for your needs You can filter the IC selecting specific features

12 13 Complete, interactive schematic and BOM Screwdriver and Wrench icon: the user can refine sections of the schematic The user can customize some aspects of the design by interacting with the schematic The BOM window provides an effective user interface (table) for all the circuit components and their characteristics

13 14 Evaluate the performance of your design Waveforms simulator Bode plots Loss distribution Efficiency Simulates key voltage and current waveforms, displays bode plots, power losses and efficiency analysis

14 15 The Flyback transformer design The user can customize the Flyback transformer

15 16 Your design get portable and exportable Export the current design project for PSpice Simulation in OrCAD. Save your project to ST server/edesign studio My Projects folder. You can then open it from ANY machine.

16 Print a summary of your project 17

17 18 HV Converters Evaluation Boards (1/3) VIPERx7 ORDER CODE Part INPUT POWER OUTPUT Description Relevant AN STEVAL-ISA058V1 VIPER17LN VAC 5W 5 V / 1 A 30mW STAND-BY ISOLATED FLY-BACK AN2864 STEVAL-ISA060V1 VIPER17HN VAC 6W 12V / 500 ma ISOLATED FLY-BACK AN2753 EVLVIP17-5WCHG VIPER17HN VAC 5W 5V, 1A STEVAL-ILL017V1 VIPER17HN TSM103W 220 VAC ±20% STEVAL-ISA062V1 VIPER17HN VAC 5.5W EVLVIP27-7WLED VIPER27HN (VIPER17HN) VAC 3.5W 7V, 500mA 7W 5V, 500mA 12V, 250mA 700mA (350mA with VIPer17) BATTERY CHARGER ISOLATED FLY-BACK LED DRIVER NOT ISOLATED FLY-BACK DUAL OUTPUT ISOLATED FLY-BACK LED DRIVER AN2840 AN2811 AN2934 AN3212 EVLVIP27L-12WS VIPER27LN VAC 12W 5V, 2.4A ISOLATED FLY-BACK AN2929 EVLVIP27H-12SB VIPER27HN VAC 11W 5V, 2.2A STAND-BY ISOLATED FLY-BACK EVLVIP37L-5V3A VIPER37LE VAC 15W 5V, 3A ISOLATED FLY-BACK TBD Under development VIPER37LE VAC 15W 12V, 1.3A ISOLATED FLY-BACK TBD Under development VIPER37HE VAC 15W 12V / 5V ISOLATED FLY-BACK TBD AN3011

18 19 HV Converters Evaluation Boards (2/3) VIPERx6 ORDER CODE Part INPUT POWER OUTPUT Description Relevant AN Under development VIPER VAC Under development VIPER VAC STEVAL-ISA096V1 VIPER06LS VAC 1W -12V/-5V 12V / 300mA Option ( 5V /800mA) 5V / 800mA Option ( 12V /300mA) Non isolated Fly-back Isolated Fly back Buck boost converter Under development VIPER VAC 1W 12V Buck converter TBD STEVAL-ISA010V1 VIPER16LN VAC 1.8W 12V / 5V /150mA EVLVIP16H-4WFN VIPER16HN VAC 4.5W 16V / 280mA STEVAL-ISA071V1 VIPER16LN VAC 4W - 5V / 400mA, 7V / 160mA ULTRA WIDE RANGE BUCK CONVERTER NON ISOLATED FLY-BACK DUAL OUTPUT NON ISO FLY-BACK TBD TBD TBD AN2872 AN3028 draft UM0920 EVLVIP16L-4WFL VIPER16LN VAC 5W 12V, 350mA ISOLATED FLY-BACK Data Brief * EVLVIP16LD-1W5 VIPER16LD VAC 1.8W 12V,5V,150mA STEVAL-ISA081V1 VIPER26LD VAC 12.5W 12V /1A, 3.3V /100mA Under development VIPER26LN VAC 12W 12V, 1A BUCK CONVERTER NON ISOLATED ISOLATED FLYBACK OPTO-LESS NON ISOLATED FLY-BACK Data Brief * UM0984 TBD

19 20 HV Converters Evaluation Boards (3/3) VIPERx5, VIPERx8, ALTAIRxx ORDER CODE Part INPUT POWER OUTPUT Description Relevant AN STEVALVIP15L-6W VIPER15LN VAC 6W 12V, 500mA EVLVIP15L-5WSB VIPER15LN VAC 5W 5V, 1A EVLVIP25L-10WSB VIPER25LN VAC 10W 5V, 2A ISOLATED FLY-BACK QUASI-RESONANT ISOLATED FLY-BACK QUASI-RESONANT ISOLATED FLY-BACK QUASI-RESONANT AN3160 AN2943 Data Brief * EVLVIPER28L-10W VIPER28LN VAC 12W 5V, 2.4A ISOLATED FLY-BACK AN2950 EVLALTAIR05T-5W ALTAIR VAC 5W 5V / 1A Charger Data Brief * EVLALTAIR900-M1 ALTAIR VAC 4W 13V & 3.3V Power Supply for Meter Data Brief * * Ask to division

20 ALTAIR TECHNICAL FOCUS ON All-primary regulation (CC & CV) quasi-resonant HV converter for isolated opto-less AC-DC power supply

21 ALTAIR Key Benefits CC/CV without need of Optocoupler Reduced BOM Higher reliability of the system 900 V MOSFET More robust power supply design Very low standby consumption <70 mw & Quasi-resonant High efficiency Unique Quasi-Resonant allprimary converter in market Unique 900V in market 22

22 23 ALTAIR or VIPer? Switching AC-DC 5W Not isolated flyback / buck Buck Boost VIPerx6 Fixed Frequency VIPer17 Isolated Better Efficiency Quasi-Resonant Embedded Constant Current control (Charger, LED driver*) * LED Retrofit version ALTAIR05T-800 *HVLED805 No Optocoupler (Cost, Reliability) 4W max & Need for 900V MOS (Metering, 3ph Auxiliary SMPS) ALTAIR Otherwise VIPER15

23 24 All Primary-Side Control of ALTAIR STANDARD : VIPER Vin Optocoupler Vout OPTO-LESS : ALTAIR Vin Vout CC-CV REGULATOR PWM CONTROLLER ALTAIR PWM CONTROLLER Need dedicated CV-CC controller Need optocoupler Need sense resistor Power dissipation on sense resistor Sense resistor Battery charge or LED drive requires Control of CC (constant current) and CV (constant voltage) No opto because control is all done from primary side! No CC-CV controller No optocoupler No sense resistor No dissipation on sense resistor

24 25 Typical Application Schematic Reduced BOM & No Optocoupler! Optocoupler replaced by auxiliary winding for Current Sensing Voltage Sensing IC Supply

25 Output Voltage [V] Load regulation cv/cc: high accuracy 6 High voltage accuracy /-2.5% Output Current [ma] High current accuracy: /-5% 26

26 27 FEATURES and BENEFITS 900V, avalanche rugged internal power MOSFET BEST IN CLASS ROBUSTNESS CC/CV regulation with no opto-coupler REDUCED BOM NO SECONDARY SIDE CONTROLLER BETTER RELIABILITY Internal HV start-up circuit Quasi-resonant ZVS operation GOOD any Load Burst mode operation at no-load SOURCE <70mW standby consumption SOURCE Low quiescent current (<1mA) SO16 package MASS PRODUCTION STARTED Demo-board in development BOM & Schematics available SO16N Vcc IREF ZCD/FB COMP N.A DRAIN DRAIN DRAIN DRAIN N.C. N.A. N.A. N.A.

27 TECHNICAL FOCUS ON VIPER37 Fixed frequency HV converter for isolated flyback AC-DC power supplies

28 29 VIPER37 Summary Product : 15W to 30W High Voltage Converter for low standby consumption, low component count isolated flyback, efficient and reliable AC-DC power supply. In VIPerPlus Portfolio: our highest power up to now. Applications : mainly Consumer and Chargers, also LED Lighting and Auxiliary Supplies Key Benefits: best ruggedness (800V Vbr MOSFET) best no-load consumption (<30mW)

29 VIPer37 features (Animated slides) FLY-BACK / FF ISOLATED AC IN Burst Integrated IC mode auto-restart for High <30mW Voltage with L1 fault Stand-by and consumption Startup Soft-Start F I When After 1- When feedback turn-on, fault the voltage occurs, auxiliary decreases the IC R2 DS winding immediately down to supplies the shuts-down threshold the IC value, via and C1 C2 D2 considered restart rectifier slower as and no-load capacitor. than 1 st condition, start-up. NTC 2- the After IC goes restart, But from before, Idrain current-control grows softly to burst during mode turn-on, by : growing it switches the switching Idlim just enough frequency pulses is 0Hz in packet, and thus for the Vdd = transformer 0V. The integrated to supply «the HV Viper. R6 VIPER x7 startup» circuit sources DRAIN CURRENT current from I drain to charge DRAIN Soft start zone BURST with MODE the Vdd capacitor until the IC MODE starts I DLIM switching. growing I EMI reduction DLIM value CONTROL zone VIPER37 is naturally good in EMI, I DRAIN since it performs Frequency Jittering I around D_BM = 100mA its switching frequency, VDD_ON thus spreading emissions on 8.5 a larger ms spectrum. External I DLIM components filtering EMI can be lower cost thanks to this feature 30 Low restart repetition rate for / SOURCE DRAIN temperature recovery. HV start up C6 BURST (Idlim reduced to 100mA in Soft Idrain VDD MODE DRAIN T1 I D3 Aux DS_ start order for to less avoid audible noise) V OUT CH winding stress on CONT transformer and better system reliability. BR V DD Transient VDD Controller CONT FB drain current depends on load C3 D4 FB C4 C6 R5 R3 SOFT IC3 START V FB_lin V FB_olp Treshold = V FB_bm - V FB_bm_hys Fsw = 0 KHz Fsw = 60 KHz V FB_bm 1 IC2 C5 OVER LOAD Steady state (minimum Schematic) R4 BR OLP Shut down C7 V FB t R4 t t 30mW Stand-by Minimum components count Low cost EMI filter C1,C2, L1 Low cost clamp components R2,C6,D2 Default current limit 1000mA Short circuit (Vfb overload) protection No need ext components 2 nd Over Current protection No need ext components

30 31 VIPer37 features (Animated slides) AC IN F NTC C1 L1 C2 R2 D2 C6 T1 2 nd Integrated overcurrent security on drain current Proteting against Short circuit and heavy transformer saturation D3 V OUT FLY-BACK / FF ISOLATED 30mW Stand-by Minimum components count D OVP C5 Low cost EMI filter C1,C2, L1 1st SETTABLE output overcurrent and over voltage protection on auxiliary winding It s possible to set only an output current limit bellow 1A by adding Rlim. Overvoltage value can be set with Rlim, Rovp and Dovp. VIPER x7 R OVP DRAIN BR R LIM Controller CONT R6 FB (Schematic with 2 OCP & OVP) VDD C3 D4 C4 C6 R5 IC3 IC2 R4 C7 R3 R4 Low cost clamp components R2,C6,D2 Current limit set-up R LIM <1000mA Short circuit (Vfb overload) protection No need ext components 2 nd Over Current protection No need ext components Over Voltage Protection (V OUT ) R LIM, R OVP, D OVP

31 32 VIPer37 features (Animated slides) FLY-BACK / FF ISOLATED L1 30mW Stand-by AC IN F NTC C1 C2 R2 D2 C6 T1 D3 V OUT Minimum components count C5 Low cost EMI filter C1,C2, L1 R7 R8 C6 VIPER x7 DRAIN (Schematic with BOP) BR Controller CONT R6 FB VDD D4 Brown C4 Out Protection In current control mode, R5 if the input R3 voltage decreases, the IC has to compensate by injecting IC3 more current R4 C7 in the transformer. In order to prevent the IC to over-compensate in undervoltage condition, it s possible to set IC2 C3 R4 under-voltage thersholds Vin(on) & Vin(off) with external components R7,R8,C6 C6 Low cost clamp components R2,C6,D2 Default current limit 1000mA Short circuit (Vfb overload) protection No need ext components 2 nd Over Current protection No need ext components Brown out set-up (V INDC ) R7,R8, C6

32 TECHNICAL FOCUS ON VIPER06 Fixed frequency HV converter for replacement of passive AC-DC power supplies

33 34 VIPER06 Summary Product : 4W to 8W High Voltage Converter for low component count Buck, buck-boost or non-isolated flyback (or isolated) efficient and reliable AC-DC constant voltage supply. In VIPerPlus Portfolio: our lowest power up to now. Applications : mainly appliance, home automation (replacement of passive supplies), also LED Lighting and Auxiliary Supplies Key Benefits: best ruggedness (800V MOSFET & more protection) Universal : fits many application cases

34 35 VIPer06 typical schematics 2/8 NON-ISOLATED BUCK: typical low cost replacement of passive power supplies. Highlights : few components, no transformer Lowlights : not isolated, and output current is limited to Idlim of the MOSFET (380mA) NON-ISOLATED BUCK-BOOST: typical low cost solution for appliance with Triacs. With negative power supply the MCU can drive any kind of Triac (including 3 quadrant) and the driver bipolar is NPN. Whereas with positive supply the MCU can only drive 4 Quadrant triacs with PNP bipolar driver. Highlights : few components, able to supply negative voltage Lowlights : not isolated, and output current is limited to Idlim of the MOSFET (380mA)

35 36 VIPer06 typical schematics 4/8 NON-ISOLATED FLYBACK: typical low cost solution when Vout is low and Iout > Idlim (380mA) Highlights : few components, no need of auxiliary winding on transformer, opto-less Lowlights : not isolated, standby consumption is not optimized. NON-ISOLATED FLYBACK with Standby comsumption optimized: typical low cost solution when Vout > 12V. (VIPer can be supplied by Vout after start-up) Highlights : few components, no need of auxiliary winding on transformer, optoless,<30mw standby consumption Lowlights : not isolated, Vout needs to be >12V - R1 C1 D1 L1 C2 R2 DRAIN C6 D2 VIPER x6 COMP C3 T1 D3 Controller FB LIM VDD C5 R5 D4 C4 R3 R4 V OUT

36 37 VIPer06 typical schematics 6/8 AC IN - R1 C1 D1 L1 C2 R2 VIPER x6 DRAIN D2 C6 T1 Controller FB D3 C5 R5 D4 R3 V OUT NON-ISOLATED FLYBACK with Standby comsumption optimized: typical low cost solution when Vout<12V (VIPer can be supplied by transformer after start-up). Highlights : few components, opto-less, <30mW standby consumption. Lowlights : not isolated, need auxiliary winding on transformer COMP C3 LIM VDD C4 R4 ISOLATED FLYBACK (PRIMARY REGULATION): typical low cost solution for optimized standby consumption and no opto-coupler criteria Highlights : few components, opto-less Lowlights : requires auxiliary winding on transformer (sensing & supply of VIPER) AC IN - R1 C1 D1 L1 C2 R2 VIPER x6 DRAIN D2 C6 T1 D3 C5 R5 D4 FB Controller V OUT R3 COMP C3 LIM VDD C4 R4

37 38 VIPer06 typical schematics 8/8 R1 D1 AC IN C1 - L1 C2 R2 D2 VIPER x6 DRAIN C6 T1 D3 R6 D4 C6 C5 V OUT ISOLATED FLYBACK : typical basic solution for isolated SMPS. Highlights : no need auxiliary winding on transformer (internal current source from drain pin to charge C4) Lowlights : need opto-coupler Controller FB COMP LIM VDD C4 R5 IC3 R4 C7 R3 R1 D1 L1 R2 C6 C3 IC2 R4 AC IN - C1 C2 D2 T1 D3 C5 V OUT VIPER x6 R6 D4 C6 DRAIN ISOLATED FLYBACK with optimized standby consumption: typical basic solution for optimized standby consumption. Highlights : <30mW standby consumption Lowlights : requires auxiliary winding on transformer (supply of VIPER), need opto-coupler Controller FB COMP LIM VDD C4 R5 IC3 R4 IC2 C7 R3 C3 R4