STEVAL-ISA033V1
55 W flyback SMPS demonstration board for alarm system based on the L5991 and STP12NK80Z
Data Brief
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 STEVAL-ISA033V1
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.
June 2008
Rev 1
1/6
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For further information contact your local STMicroelectronics sales office.
1
3
2 2
Figure 1.
C1
C2
4+1
L1 15m H
3
V a r ii s t o r V a r s to r
1
C O N2
t
S TP S 8 H1 0 0
12
4 6
R1
4
t t
N
2
2
3
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
C7 100p
R14 22
P GND
R10 0 .2 0
3 3
2
2/6
D IO D E B R ID G E D1
Circuit schematic
F1
F
J22
R12
C21 1n
FUS E
2 1
1k
100n 400V
100n 400V
T5 TR A NS FO R ME R 1
D7
C4 10n 600V
20K 6W
T R A NS IL D8
+ 1 3 .8 V
N T C 1 6 o hm
C3 220u 450V
C o u t1 330u
10
D2
C38 330u
D5
1N4148
7
S TTH106
A C _ S IG NA L
C37 330u
C o ut 330u
R46 220R
R22 8 .2
D6
R5 18k
Circuit schematic
R2 15k
R4 15k
1N4148
R9 2 .7 K
R21
Q2 BC337
Schematic diagram 1/3
27k
U4
R3
n .c .
M1
R8 1k
R11
1
PC817
S TP 10NK 60Z
R7 15k
C5
22
2 k2
R13
R20
C12 2 .2 n F 1 2 k
C23 n .c .
150n
C11 1u
C14
L5991
TL431 U3
1
R6 3 .9 k
270n
C10 680n
C 9 P GND 3 3 0 u F -2 5 V
C13
R15 330k
n .c .
R18
C6 2 .2 n
+ 1 3 .8 V
J8
J23
1
2
W IR E J UM P
C O N8A
1 3 .8 V
2 .7 n
1 3 5 7
R17
2 4 6 8
R19 47k
C8 2 .2 n
C22 n .c .
n .c .
R16 n .c .
STEVAL-ISA033V1
STEVAL-ISA033V1 Figure 2.
U5
5V
PW R
5 6 7 8
4 3 2 1
L3
O U T - 3 .8 V
5 6 7 8
1 5 uH 3 A
R29 10k
J21
4 3 2 1
L5973
D3
+ C o u t2
B A T T F A IL UR E B A TT C HA R G E R - O UT
R24
R25
C29
R28 56k
Q1
B A T T F A IL UR E A C F A IL UR E
C30
STPS2L25U
3 3 0 uF 1 0 V
4 .7 K
6 .8 K
220pF
BC847A
1 0 u F 2 5 V C e r a m ic
R 2 7 2 .2 k
R26 3 .3 K
5V
C27
R 4 9 1 .2 k
O U T - 3 .8 V
1 3 .8 V
2 2 nF
8 7 6 5 4 3 2 1
C O N8
5V
Schematic diagram 2/3
A C _ S IG NA L
U2 L 7 8 0 5 /T O 2 2 0
5V
R34 10k
1
GND
V IN
VOUT
3
D9 D IO D E R33 150k 2W
U6
A C F A IL UR E
2
C31
C39
+ C o u t3 3 3 uF 1 0 V
1 uF 4 5 0 V
1 3 .8 V
U2
PC852
J9
1 0 0 nF
B A T T C HA R G E R - IN
1 2
C O N2
M2
4 7 0 uH
2
L4 1
F2
B A TT C HA R G E R - O UT
D4
STPS2L25U
B A TT C HA R G E R - O UT
1 2 3 4
8 7 6 5
R40
F U S E /S M - 4 A
B A T T C HA R G E R - IN
R48 860k
STS5PF30L
R32 12k
180k
J10
TSM108
1 2
B A T T .C H A R G E R
R50 0 .1 -3 W
C25
220u 25V
1 2 3 4 5 6 7
14 13 12 11 10 9 8
U7
R30 22k
C28
R23 1k
C26 220n
R31 2 .7 k
220u 25V
IB A T T _ M E A S UR E
C40 220p
0
C36
C32
R s e ns e 1
47n
220n
SW 1
R s e ns e
0 .0 4
Circuit schematic
S W K E Y -S P D T
0 .0 8
3/6
1 2 3 4 5
1 2 3 4 5
VDC_CTRL
R35 5 .6 K
8
Schematic diagram 3/3
R38 820R
VBATT_CTRL R36
R37 3 .3 k
4 4
8
C34 100n
14
14
U2 8 A
U2 8 B
VBATT_CTRL
1
3
6
7
HC F 4 0 1 1 B
5
4
4
7
14
14
14
7
7
7
4/6
U3 1
Circuit schematic
3
Figure 3.
DC_IN
u2 9 vn7 5 0 p t
R47 1 k2
a
k
2
PW R
u3 0 vn7 5 0 p t
1 a1
STPS20L25C
VBATT
3
+
VREF1
U2 7 A
2
TS912
1
R39 10k
0
0
C35 100n
U2 7 B
BATT_OK
VBATT
VREF2
5+ 6TS912
7
IBATT_CTRL
0
I B A T T _ ME A S UR E
IBATT_CTRL
2
HC F 4 0 1 1 B
R42 1k
R43
U2 8 C
8 9
HC F 4 0 1 1 B 6
4
HC F 4 0 1 1 B
1k
U2 6 B
BATT_OK
10
5
U2 6 A
C33 100n
3
VREF1
U1 6 TL431
VDC_CTRL
1
R44 10k
VREF2
2
HC F 4 0 1 1 B
R45 1 .8 k
J19
PW R
J20
1 3 .8 V
PW R
1 3 .8 V
DC_IN
B A T T C HA R G E R - O UT VBATT
0
1 3 5 7
C O N8 A
B A T T C HA R G E R - O UT
1 3 5 7
2 4 6 8
2 4 6 8
STEVAL-ISA033V1
C O N8 A
STEVAL-ISA033V1
Revision history
2
Revision history
Table 1.
Date 30-June-2008
Document revision history
Revision 1 Initial release. Changes
5/6
STEVAL-ISA033V1
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