ST ISA033V1 User Manual
55 W flyback SMPS demonstration board for alarm system
based on the L5991 and STP12NK80Z
Features
■ Input voltage:
– Vin: 88 - 300 Vac (f: 50-60 Hz)
■ Output voltages:
– Vout1 = 13.8 V, Iout1 = 3 A
– Vout2 = 25 V, Iout2= 200 mA
– Vout3 = 3.8 V, Iout3 = 350 mA (1.9 A peak)
■ Output signals:
–AC input check
– Low battery check
Description
This demonstration board is a multi-output SMPS
which can be used to supply an alarm system.
The circuit is composed of an AC-DC single
output converter with an approximate power
capability of 60 W, while the other outputs are
obtained by means of DC-DC converters. The
power supply also integrates a battery charger
circuit in order to charge a standard SLA 12 V
battery.
STEVAL-ISA033V1
Data Brief
STEVAL-ISA033V1
June 2008 Rev 1 1/6
For further information contact your local STMicroelectronics sales office.
www.st.com
6
Circuit schematic STEVAL-ISA033V1
+
1
3
.
8
V
A
C
_
S
I
G
N
A
L
P
G
N
D
C
2
2
n
.
c
.
F
1
F
U
S
E
R
7
1
5
k
C
6
2
.
2
n
C
9
3
3
0
u
F
-
2
5
V
R
1
9
4
7
k
D
5
1
N
4
1
4
8
R
1
2
1
k
D
2
S
T
T
H
1
0
6
R
4
6
2
2
0
R
C
2
1
1
n
R
3
n
.
c
.
R
8
1
k
J
2
2
C
O
N
2
2
Q
2
B
C
3
3
7
R
2
1
5
k
R
9
2
.
7
K
C
1
1
1
u
C
1
4
2
7
0
n
R
2
1
2
7
k
C
3
8
3
3
0
u
R
1
4
2
2
D
7
S
T
P
S
8
H
1
0
0
L
1
1
5
m
H
2
3
R
1
8
n
.
c
.
R
1
2
0
K
6
W
R
1
7
n
.
c
.
T
5
T
R
A
N
S
F
O
R
M
E
R
7
4
1
2
C
5
1
5
0
n
R
1
6
n
.
c
.
L
5
9
9
1
2
4
6
8
1
5
1
3
1
1
9
R
1
0
0
.
2
0
C
2
1
0
0
n
4
0
0
V
R
1
3
2
k
2
C
4
1
0
n
6
0
0
V
R
6
3
.
9
k
C
2
3
n
.
c
.
R
2
0
1
2
k
R
4
1
5
k
C
8
2
.
2
n
R
2
2
8
.
2
C
1
1
0
0
n
4
0
0
V
D
8
T
R
A
N
S
I
L
C
o
u
t
1
3
3
0
u
C
7
1
0
0
p
J
8
C
O
N
8
A
3
7
4
8
R
5
1
8
k
R
1
1
2
2
C
1
2
2
.
2
n
F
C
3
J
2
3
W
I
R
E
J
U
M
P
2
M
1
S
T
P
1
0
N
K
6
0
Z
3
C
1
3
2
.
7
n
C
3
7
3
3
0
u
C
o
u
t
3
3
0
u
U
3
T
L
4
3
1
3
R
1
5
3
3
0
k
C
1
0
6
8
0
n
D
6
1
N
4
1
4
8
1 Circuit schematic
Figure 1. Schematic diagram 1/3
V
8
.
3
1
+
R
6
0
4
2
2
R
22 0 R
R 4 6
k
5
8
R
1
u
8
8
0
3
3
3
30 u
3
C
C
3
2/6
E
G
D G E
D
B R I
D E
O
O D E B R I
I
I
D
D
1
F
F 1
0
0
0
1
1
2
H
H1 0
n
8
8
C
1
C 2 1
1n
S
P
PS
1
1
t
t
T
T
u
u
0
S
S
o
ou
3
7
C
3
33 0 u
C
D
D7
2
2
1
k
k
1
R
1
R 1
2
1
R
E
E R
M
M
5
R
R
T
T 5
O
F
S
N
NS F O
A
A
R
T
T R
D 1
D 1
3
2
C
C 2
3
H
H
m
m
1
5
1
L
1
L
15
2
1
1
C
C
E
E
S
U
F
F US
2
2
J2 2
J
F
4
1
1
+
- +
-
4
V
V
0
0
0
4
n
n 40
0
0
0
10
1
1
2
6
L
I
IL
S
N
A
8
R
R A NS
D
D 8
T
T
V
V
0
0
0
0
6
6
4
4
n
n
C
C
0
0
1
1
W
W
6
6
1
K
K
R
R 1
0
0
2
2
50 V
4
u
3
20
C
C 3
2
2
V
0
0
4
40 0 V
n
n
0
0
1
10 0
4
1
t
t
m
m
h
o
6
1
C
NT C 1 6 o h
NT
t
t
Va ris to r
Va ris to r
2
2
N
N
O
C O
C
N
R518 k
t
u
u
u
0
o
3
C
3
C o ut33 0
u
u
7
7
0
3
3
3
30
C
3
3
C
K
7
9
.
R
2
2. 7 K
R 9
0
1
5
5
D
D
7
2
D
D 2
8
8
4
4
1
1
4
4
N
N
1
1
8
6
4
0
06
1
1
41 4 8
4
6
H
H1
N
N
T
D 6
1
1
D
T
T T
S
S
2
2
2
.
.2
R
8
8
R 2 2
L
A
N
G
I
S
_
C
A
k
k
4
4
5
5
R
1
1
R
k
2
5
5k
1
R
1
R 2
8
k
R 8
1k
R
1
U4
U4
1
M
M1
2
k
1
7
7k
2
2
2
R
R 2 1
.
.
c
.
.c
n
n
3
3
R
R
7
7
3
2
2
3
Q
Q
C
B
B C 3 3
n
n
0
0
5
5
C
1
C 5
15
3
2
C
C 2 3
k
k
7
5
R
1
R 7
15
3
7
81
C
P
P C 8 1 7
Z
0
0Z
6
K
N
0
0
0
1
1
R
R 1
P
T
T P 1 0N K 6
S
S
3
3
2
1
k
R
2
2k 2
R 1 3
1
7
7
C
C
2
2
1
2
2
1
R
R 1 1
1
3
5
10
1
12
1
14
1
16
7
6
5
4
3
2
1
0
k
2
2
2k
R
1
R 2 0
1
F
n
2
2
1
12
.
.2 nF
2
2
C
C
k
9
6
.
R
3
R 6
3. 9 k
.
c
.
n
n.c .
1
2
1
3
4
3
L
U
T
T L4 3 1
U3
0
0
2
.
.2
0
0
D
N
G
P
p
0
0
1
10 0 p
ND
G
4
1
R
R1422
9
1
9
91
9
9
5
5
L
L
8
4
1
C
C 1 4
1
1
C
C 1 1
P
9
2
2
C
C 9
n
0
0
0
1
8
68 0 n
6
C 1
C
n
0
0n
7
7
2
2
u
1
1u
13 . 8 V
P
M
U
J
2
E
R
3
I
1
23
2
W I R E J UM P
J
J
W
8
6
4
2
A
8
N
O
8
8
7
5
3
1
J
C
J
C O N 8 A
8V
+1 3 .
n
n
2
2
6
6
.
.
2
2
C
C
.
.
c
c.
8
.
.
1
n
n
R
R 1 8
V
5
2
25 V
-
F
u
0
3
3
33 0 u F
k
0
5
5
3
1
1
33 0 k
3
R
R
3
1
C
C 1 3
.
c
c
c.
6
7
7
1
1
R
R
8
8
C
C
9
1
R
R 1 9
n
n
7
.
2
2. 7
.
.
.
1
n
n.c .
n
n
R
R 1 6
.
2
2
c
2
2
.
n
n.c .
C
C
n
2
2n
.
.
2
2
k
7
4
47 k
Loading...