STEVAL-ISV001V1

STEVAL-ISV001V1 1000 W dual stage DC-AC converter demonstration board based on the STP160N75F3 Data Brief Features ■ Nominal input voltage: 24 V ■ Output voltage: 230 Vrms, 50 Hz ■ Output power: 1 kW ■ Efficiency: 90% ■ Switching frequency: 100 kHz (DC-DC); 16 kHz (DC-AC) ) s ( ct u d o r P e Description The STEVAL-ISV001V1 demonstration board implements a 1 kW dual stage DC-AC converter, suitable for use in battery powered uninterruptible power supplies (UPS) or photovoltaic (PV) stand alone systems. The converter is powered from a low DC input voltage varying from 20 V to 28 V and is capable of supplying up to 1 kW output power on a single phase AC load. These features are met with a dual stage conversion topology including an efficient step-up push-pull DC-DC converter, to produce a regulated high voltage DC bus, and a sinusoidal h-bridge PWM inverter to generate a 50 Hz, 230 Vrms output sine wave. Other relevant features of the proposed system are high power density, high switching frequency, galvanic isolation and efficiency greater than 90% over a wide output load range. t e l o ) (s STEVAL-ISV001V1 s b O t c u d o r P e t e l o s b O November 2008 Rev 1 For further information contact your local STMicroelectronics sales office. 1/6 www.st.com 6 Circuit schematics 1 STEVAL-ISV001V1 Circuit schematics Figure 1. Converter schematic: the power stage T1 VIN T2 T3 R96 C38 C1 C3 R97 C2 R1 R2 D14 M1 R92 M2 M3 R90 R91 M4 C7 M5 D15 M6 C8 C5 R87 R88 ) s ( ct R89 C55 u d o r P e GND 0 GATE A GATE B t e l o L4 1.5m D2 D1 D13 T1 R95 T2 s ( t c C53 u d o D4 s b O 2/6 )- C34 T3 e t e ol R94 TX Pr D3 s b O C35 Igbt1 Igbt2 G H2 G H1 S H1 C36 V AC 2 V AC 1 Igbt3 Igbt4 G L1 GL2 AM00632v1 STEVAL-ISV001V1 Circuit schematics Figure 2. Schematic of the push-pull control and driving circuit +15V +15V +15V Q9 2SD882 U1 VOUT C10 R7 1 C16 2 R9 3 VREF IN+ +VI SYNC 4 6 7 GND RT OUTA 8 14 SS Q11 BC178B PWM B 12 11 PWM A 10 Q10 BC107B 9 COMP Q12 BC178B PWM B u d o C17 1n e t e ol Inverter control driving circuit schematic PWM LOW1/HIGH2 D5 1 2 3 +15 4 5 6 7 C2 PWM LOW2/HIGH1 +15 e t e l C33 b O so L6386 VBOOT SD HVG HIN VCC OUT NC DIAG NC CIN LV IC 1 LIN 2 SD 3 HIN 4 VCC 5 DIAG 6 CIN 7 SGN C26 1 GND R22 1 )- 1 9 L6386 VBOOT HVG OUT NC NC LV GND 8 s b O RG 1 1 1 t(s SG N uc od Pr IC LIN ) s ( ct D9 R23 C19 GATE B R21 0 Figure 3. 0 +15V C14 SG3525 C12 5u C18 13 S.DOWN DISCH R93 PWM A 15 VC CT GATE A R20 16 OUTB OSC 5 C11 IN - Pr 0 AM00633v1 5V G H1 C57 PWM LOW1/HIGH2 R9 S H1 PWM LOW2/HIGH1 D6 PA5 PA6 RG L1 S L1 RESET 18 17 16 15 14 13 12 11 20 19 3 U1 PA0/LTI PA1/ATI PA2/ATPW PA3/ATPW PA4/ATPW PA5/ATPWM3/ICCD PA6/MCO/ICCCLK/BR PA VD PB0/SS/AI PB1/SCK/AI PB2/MISO/AI PB3/MOSI/AI PB4/CLKIN/AI PB5/AIN PB6/AIN 2 4 5 6 7 8 9 1 OSC1/CLK OSC RESE 0 1 VS D7 C3 C56 1 ST7FLITE39_SOIC_ G H2 1 RG H2 R24 1 S H2 1 R25 1 D8 G L2 9 RG L 2 8 D10 S L2 0 AM00634v1 3/6 Circuit schematics STEVAL-ISV001V1 Figure 4. Vin Schematic of the auxiliary power supply section U1 8 7 6 5 C39 VC OU GN SYN VRE IN F COM L5973D D12 L3 1 2 3 4 +15V 150uH R83 C41 + R81 + + Q8 C42 C51 C52 D11 C40 R82 5V U2 1 +15V VIN C5 2 3 G VOUT N D L7805 u d o 0 r P e t e l o ) (s t c u d o r P e t e l o s b O 4/6 ) s ( ct C59 s b O AM00635v1 STEVAL-ISV001V1 2 Revision history Revision history Table 1. Document revision history Date Revision 27-Nov-2008 1 Changes Initial release. ) s ( ct u d o r P e t e l o ) (s s b O t c u d o r P e t e l o s b O 5/6 STEVAL-ISV001V1 ) s ( ct Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. u d o r P e All ST products are sold pursuant to ST’s terms and conditions of sale. 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