ZXGD3101 Diodes, Inc., ZXGD3101 Datasheet - Page 10

• Manufacturer Part Number: ZXGD3101
• Description: Synchronous Rectifier Controller For Flyback Converters.
• Manufacturer: Diodes, Inc.

Issue 4 - January 2009
© Diodes Incorporated 2009
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C C M/C rC M/D C M
PW M controller
C C M/C rC M / D C M
Figure 3 - Example connection for high side synchronous rectification
Figure 2 - Example connection for low side synchronous rectification
PW M controller
C clam p
C clam p
RdC
RdC
R clam p
D clam p
RdD
D clam p
RdD
R clam p
T ransform er
T ransform er
V
Qpri
A U X
S
Qpri
Optional diode, D f
G
Rsnub
R
R E F
GAT EL
D R AIN
D
R EF
A U X
Vcc
10
D
R
R E F
GAT EH GN D
D R AIN
GAT EL
BIAS
S yn ch ro n o u s
Optional diode, D f
R EF
ZX G D 3 1 0 1
FE T, Q syn
R snub
Vcc
R
B IA S
C snub
D
BIAS
Vcc
GAT EH GN D
G
ZX G D 3 1 0 1
R
Q2
GN D
B IA S
S yn ch ro n o u s
Vcc
FE T, Q syn
C1
S
C snub
Q2
GN D
D1
R4
C1
C
A U X
ZXGD3101T8
D1
R4
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