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STEVAL-ISA032V1
60 W forward converter demonstration board for fiscal cash register
based on the L5991 and STP10NK60Z
Data Brief
Features
■ Input voltage: V
: 88 - 265 Vac
IN
– frequency: 50-60 Hz
■ Output voltage: V
■ Output current: I
■ Efficiency: >75%
■ Safety: EN60950 compliant
■ Conducted EMI: EN55022
= 9 V
OUT
= 5.5 A (6 A peak)
OUT
Description
The STEVAL- ISA032V1 forward converter
demonstration board is a power supply based on
the primary controller L5991 and the
STP10NK60Z N-channel 600 V power MOSFET.
It is designed to be suitable to supply power to the
electronic fiscal cash register (EFCR)
demonstration board STEVAL-IPC001V1.
The STEVAL- ISA032V1 demonstration board
accepts a wide range of input voltage (88 to 265
Vac) and delivers a single 9 V output with a power
capability of up to 50 W continuous, and 60 W
peak, making it also capable of providing power to
a thermal printer.
STEVAL-ISA032V1
July 2008 Rev 1 1/5
For further information contact your local STMicroelectronics sales office.
www.st.com
5
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Circuit schematic STEVAL-ISA032V1
1 Circuit schematic
Figure 1. Schematic diagram 1/2
+ 9V
2
L
L2
0
0
1
H
0
3
S
2
T
T 2
E
D G
D G E
I
R I
E B
D E BR
O D
O
D I
D I
1
F1
F
F
2/5
2
P
D
D 2
T
S
S T P S 30 H 1 0 0
0
2
T
L
P
R
M
F
S
N
R
10
T
T R N S F M R P L T 2 0
n
7
.
4
4
4. 7 n
C
C 4
1
R
R 1
2
+
+
D 1
D 1
1
-
-
4
n
0
0n
2
0
0
C
1
1
C 2
2
1
H
m
m H
3
0
0
1
T
T 3
1
3
4
n
n
8
8
0
1
1
00
0
1
C
C
1
2
1
H
H
m
1
1
0
T
2
T
20 m
3
4
n
0
1
1
0
C
C
1
10 0 n
E
S E
S
U
U
F
F
A
5
.
.5 A
2
2
N
0
0
2
0
R 2 0
10 0
R
1
u
u
0
6
2
C
2
C 6
22 0
u
0
5
2
C
2
22 0 u
C 5
H
u
7
4
47 u H
9
9
1
1
n
R
R1910 0
1n
C 1 9
C
1
2
1
4
1
K
K
3
3
33
3
C
C 3
4
D
D 4
22 0 u
3
1
1
Q
Q
8
4
1
4
3
N
1
D
1N 41 4 8
D 3
t
t
16
16
-
T C -
T C
N
N
0
0
0
1
5
6
16
5
D
D 5
6
0
06
1
1
H
H
T
T
T
S
S T
5
1
7
X
T
S
S T X7 1 5
7
1
8
4
48
1
1
4
4
N
N
1
1
2
Q2S
Q
2
R
R
k
E
E
2
2k
4
.
.
N
N
2
R
R 4
2
E
Z
V Z E
V
6
5
D 6
15
1
D
k
L5 9 9 1
3
3
7
R
4
47 k
R
k
2
2
7
R
47 k
R
4
W M _
P
0
n
7
7n
.
4
7
C
C 7 4.
k
9
7
.
.9 k
R
3
R 7
3
n
0
8
3
C 8
33 0 n
3
C
0
0
1
8
R
R 1 0
6
0
9
9
9
39 0
3
R
R
k
5
6
.
R 6
1. 5 k
1
R
1
U 1
U
Z
0Z
0
6
K 6
K
N
N
0
0
1
8
P
R
R 8
T P 1
T
S
3
68 0
U 2
U 2
7
1
8
C
P C 8 1 7
P
6
.
0
0. 6
k
1
1
5
1
1
.
1
R
R
1. 5 k
0
0
31
T L 43 1
T L 4
1
3
3
5
R
R 5 3 3
T
U
O
Vc c
m p
o
C
IS E N SE
PG N D
p
p
0
0
9
2
2
6
6
C
C 9
i n
p
l
a
o
n
i
Vi c
SSGGNND
2
2
2
N
N
O
1
2
1
C O
J
C
J1
2
N
N
O
O
2
2
1
J
C
J2
C
0
N
F
V
9
+
AM00642V1