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