ST ISV001V1 User Manual

STEVAL-ISV001V1

1000 W dual stage DC-AC converter demonstration board based on the STP160N75F3

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)

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.

Data Brief

STEVAL-ISV001V1

November 2008	Rev 1	1/6
For further information contact your local STMicroelectronics sales office.		www.st.com

Circuit schematics	STEVAL-ISV001V1

1 Circuit schematics

Figure 1. Converter schematic: the power stage

VIN

T1

T2

R96

T3

R97

C38

C1

C3

C2

M1

M2

R2

D14

R1

D15

M3

M4

M5

M6

R92

R91

C7

C5

R87

R88

C8

R90

R89

C55

GND

0

GATE A

GATE B

L4

D1

D2

1.5m

Igbt1

Igbt2

G H 1

G H2

D13

R95

R94

T1

TX

S H1

T2

C34

C35

C36

V

AC 1

V AC 2

T3

C53

Igbt4

Igbt3

D4

D3

G L1

G L 2

AM00632v1

2/6