Download 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)
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.
November 2008
STEVAL-ISV001V1
Rev 1
For further information contact your local STMicroelectronics sales office.
www.BDTIC.com/ST
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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
C5
M5
D15
M6
C8
R87
R88
R89
C55
GND
0
GATE A
GATE B
L4
Igbt1
1.5m
D1
D2
D13
T1
R95
Igbt2
G H2
G H1
R94
TX
S H1
T2
C34
C35
C36
V AC 2
V AC 1
T3
C53
D4
D3
Igbt3
Igbt4
G L1
GL2
AM00632v1
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STEVAL-ISV001V1
Figure 2.
Circuit schematics
Schematic of the push-pull control and driving circuit
+15V
+15V
+15V
Q9
2SD882
U1
VOUT
C10
R7
1
C16
2
R9
3
4
5
6
7
R93
C11
8
C12
5u
IN -
VREF
IN+
+VI
SYNC
PWM A
14
GND
RT
OUTA
DISCH
PWM B
12
0
+15V
C14
11
PWM A
10
S.DOWN
Q10
BC107B
9
COMP
SS
C18
13
VC
CT
Q11
BC178B
15
OUTB
OSC
GATE A
R20
16
C19
GATE B
R21
SG3525
Q12
BC178B
PWM B
0
C17 1n
0
AM00633v1
Figure 3.
Inverter control driving circuit schematic
PWM LOW1/HIGH2
5V
D5
1
2
3
+15
4
5
6
C2
7
IC
LIN
L6386
VBOOT
SD
HVG
HIN
VCC
OUT
NC
DIAG
NC
CIN
LV
SG N
GND
C26
1
G H1
1
RG 1
1
R22
C57
PWM LOW1/HIGH2
R9
S H1
PWM LOW2/HIGH1
1
R23
1
D6
PA5
9
8
D9
PA6
RG L1
S L1
RESET
PWM LOW2/HIGH1
+15
C33
L6386
VBOOT
HVG
OUT
NC
NC
LV
GND
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
IC
1
LIN
2
SD
3
HIN
4
VCC
5
DIAG
6
CIN
7
SGN
18
17
16
15
14
13
12
11
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
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Circuit schematics
STEVAL-ISV001V1
Figure 4.
Vin
C39
Schematic of the auxiliary power supply section
U1
8
7
6
5
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
C59
0
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AM00635v1
STEVAL-ISV001V1
2
Revision history
Revision history
Table 1.
Document revision history
Date
Revision
27-Nov-2008
1
Changes
Initial release.
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STEVAL-ISV001V1
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