SI9124 Datasheet, PDF (15/16 Pages) Vishay Siliconix – 500-kHz Push-Pull DC-DC Converter With Integrated Secondary Synchronous Rectification Control

New Product
Si9124
Vishay Siliconix
LOGIC REPRESENTATIVE APPLICATION SCHEMATIC
V_AUX
OUT_P
TX_OUT ^C35
R31
0.1 mF ^{10 W}
OUT_N
GND
D3 ^1N4001
U1 5 V Reg
V_AUX
+5 V
1 V_IN V_OUT 3
+5 V
C36
0.1 mF
C37
0.1 mF
GND
D1B
R33
BAT54S
+5 V
D1B
BAT54S
D1A
BAT54S
470 W
D1A
BAT54S
GND
R32
1 kW
C36
10 mF
+5 V
D1B
R34
BAT54S
470 W
D1A
BAT54S
+5 V
L2A
4 _PRE
3 CLX
2D
1 _CLR
74HC74
+5 V
10
11
12
13
L2A
PRE
CLX
D
CLR
74HC74
Q5
Q6
Q9
Q8
5V
L3A
3
2
74AC32
L3B
6
5
74AC32
+5 V R37
1 kW
L4A
1
2
74AC00
L4B
4
5
74AC00
R35
5 kW
R36
5 kW
1
Q5
2N3904
GATE_A
GATE_B
V_OUT
Figure 14.
Document Number: 72099
S-03638—Rev. B, 20-Mar-03
www.vishay.com
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