ST ISA019V3 User Manual
80 W ESBT quasi-resonant wide-range SMPS demonstration
board based on the L6565 for 3-phase applications
Features
■ 3-phase 80 W auxiliary output SMPS
■ Quasi-resonant SMPS
■ Input: 180 V
■ Output voltage: 24 V, 3.3 A
■ Maximum output power: 80 W
■ Efficiency > 80 %
■ Switching frequency > 50 kHz
■ Safety compliant according to EN60950
■ Feedback: secondary regulation
■ RoHS compliant
Description
to 600 VAC
AC
STEVAL-ISA019V3
Data brief
STEVAL-ISA019V3
The STEVAL-ISA019V3 demonstration board is a
3-phase auxiliary power supply with an 80 W dual
output SMPS, using the L6565 PWM driver and
the STC04IE170HP ESBT as the main switch.
The combination of these ST parts provides a
high-efficiency solution for high DC input voltage,
a typical requirement of any 3-phase application.
The necessity to handle both high output power
and wide input voltage is resolved using a flyback
stage working in mixed operation mode:
discontinuous and continuous.
April 2011 Doc ID 018778 Rev 1 1/4
For further information contact your local STMicroelectronics sales office.
www.st.com
4
Circuit schematic STEVAL-ISA019V3
11
0R
07
07
07
16
6W
000u
35V
10
0u
5V
0k
20
7k
0k
10R
1k
22
7k
56k
1R
19
47k
0k
0p
0n
2n2
0n
50V
47u
50V
0k
0V
08
TT
108
11
12
10
86
017C
TT
17
24
565N
PS
0120D
17
L431
PS
17
0512
021
urn
turn
Na
10p
60
50
VA
10
15k
11
4148
13
1n
10
18
26
07
1A
AM07972V1
1 Circuit schematic
Figure 1. Demonstration board schematic
VDC
2
1
J3
D5
2/4 Doc ID 018778 Rev 1
24
47k
1k2
R26
+
35V
00u
C4
10
+
35V
C3
1000u
20120D
STPS
10
12
11
T1
5
9
8
7
Ns
3
6
Np
1150
D6
STPS
R5
2R2
C6
+
C5
VCC
C7
6.8n 2k V
R6
39k 2W
180k
R1
C1
+
H-6017C
ux
2
Na
DELTA 86
0n
10
50V
47u
H108
STT
D8
D7
STTH108
R7
39k 2W
R2
200k
R3
200k
220u 450V
D4
D2
1N4007
D1
1N4007
D3
01
2021
1
VOGT SL0512
D1010STT
180k
R4
C2
+
1N4007
1N4007
56k
R14
R13
2k2
s
turn
2
3
4
s
12
turn
H108
220u 450V
Q1
1
T2
2
4
b 0R
R11
VCC
NTC1
10R
R20
47k
R19
R21 15k
R23
3k3
1k5
R24
1
ISO1
4
C11112n2
2
ZCD
D11
0HP
STC04IE17
2
R11 1R
5
1N4148
VCC
8
7
R12
10R
OUT
U1
COMP
CS
4
L6565N
R15 1k
3
3V
D9
C8
150n
F2
T1A
J1
1M1
R8
C
VA
-550
2
1
160
2
3
GND
INV
VFF
C13 10n
U2
1
PC817
C10
10p
6
1
3
C9
470p
1R5 0. 6W
R17
1R5 0. 6W
R16
R9
1M1
2.7k
R22
3
TL431
2
C12121n
10k
R18
1M1
R10
AM07972V1
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