Data Brief
For further information contact your local STMicroelectronics sales office.
November 2008 Rev 1 1/6
6
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.
STEVAL-ISV001V1
www.st.com
Obsolete Product(s) - Obsolete Product(s)
Circuit schematics STEVAL-ISV001V1
2/6
1 Circuit schematics
Figure 1. Converter schematic: the power stage
C1
C2
VIN
GND
M5
M1
R1
R2
0
GATE A GATE B
R92 R91 R90 R87
C5
R88
M6 M4
C55
R89
M2
D14
D15
C38
C3
C7 C8
R96
TX
D1
R97
S H1
G L1 G L 2
D2
D3
C34 C35 C36
L4
1.5m
R94
C53
D13 R95
G H 1 G H2
V A
C
1 V AC 2
T2
T3
T1
T2
T3
D4
Igbt1 Igbt2
Igbt3
Igbt4
T1
AM00632v1
Obsolete Product(s) - Obsolete Product(s)
STEVAL-ISV001V1 Circuit schematics
3/6
Figure 2. Schematic of the push-pull control and driving circuit
Figure 3. Inverter control driving circuit schematic
C16
C14
R93
+15V
PWM B
PWM A
U1
SG3525
IN -
1
OSC
4
CT
5
DISCH
7
SS
8
S.DOWN 10
OUTA 11
GND 12
VC 13
OUTB 14
RT
6
COMP 9
SYNC
3
+VI 15
IN+
2
VREF 16
0
+15V
VOUT
C17 1n
C10
R7
C11
C12
5u
R9
+15V
C18
R20
PWM A
Q9
2SD882
Q10
BC107B
Q11
BC178B
Q12
BC178B
GATE A
+15V
C19
R21
PWM B
GATE B
0
0
AM00633v1
PWM LOW1/HIGH2
PWM LOW2/HIGH1
D6
R24
D10
D8
R22
S L1
RG 1
RG L1
S H1
C26
C2
+15
IC L6386
SD
2
VCC
4
LIN
1
HVG 1
GND 8
HIN
3
CIN
6
DIAG
5NC 1
SG N
7
LV 9
OUT 1
NC 1
VBOOT 1
RG H2
RG L 2
S L2
S H2
C3
G H1
C33
+15
G L2
IC L6386
SD
2
VCC
4
LIN
1
HVG 1
GND 8
HIN
3
CIN
6
DIAG
5NC 1
SGN
7
LV 9
OUT 1
NC 1
VBOOT 1
G H2
0
D5
0
R25
D7
R23
D9 PA6
R9
5V
C56
C57
RESET
U1
ST7FLITE39
_
SOIC
_
VS
1
VD 2
RESE
3
OSC1/CLK
20
OSC
19
PA0/LTI
18
PA1/ATI
17
PA2/ATPW
16
PA3/ATPW
15
PA4/ATPW
14
PA5/ATPWM3/ICCD
13
PA6/MCO/ICCCLK/BR
12
PA
11
PB0/SS/AI 4
PB1/SCK/AI 5
PB2/MISO/AI 6
PB3/MOSI/AI 7
PB4/CLKIN/AI 8
PB5/AIN 9
PB6/AIN 1
PWM LOW1/HIGH2
PA5
PWM LOW2/HIGH1
AM00634v1
Obsolete Product(s) - Obsolete Product(s)
Circuit schematics STEVAL-ISV001V1
4/6
Figure 4. Schematic of the auxiliary power supply section
C59
5V
U2
L7805
VIN
1G
N
D
2
VOUT 3
+15V
+
C51
+
C52
C5
Q8
U1
L5973D
OU 1
SYN 2
IN 3
COM 4
F
5 VRE
6 GN
7 VC
8
C39
C40
R81
C41
L3
150uH
R82
R83
+
C42
+15V
Vin
0
D11
D12
AM00635v1
Obsolete Product(s) - Obsolete Product(s)
STEVAL-ISV001V1 Revision history
5/6
2 Revision history
Table 1. Document revision history
Date Revision Changes
27-Nov-2008 1 Initial release.
Obsolete Product(s) - Obsolete Product(s)
STEVAL-ISV001V1
6/6
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.
All ST products are sold pursuant to ST’s terms and conditions of sale.
Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no
liability whatsoever relating to the choice, selection or use of the ST products and services described herein.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this
document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products
or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such
third party products or services or any intellectual property contained therein.
UNLESS OTHERWISE SET FORTH IN ST’S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED
WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED
WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS
OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT.
UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT
RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING
APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY,
DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE
GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER’S OWN RISK.
Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void
any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any
liability of ST.
ST and the ST logo are trademarks or registered trademarks of ST in various countries.
Information in this document supersedes and replaces all information previously supplied.
The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners.
© 2008 STMicroelectronics - All rights reserved
STMicroelectronics group of companies
Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan -
Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America
www.st.com
Obsolete Product(s) - Obsolete Product(s)