Datasheet No – 97476
July 1, 2011
IR11682S
Features
DUAL SmartRectifier
Product Summary
TM
DRIVER IC
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Secondary-side high speed controller for
synchronous rectification in resonant half bridge
topologies
200V proprietary IC technology
Max 400KHz switching frequency
Anti-bounce logic and UVLO protection
4A peak turn off drive current
Micropower start-up & ultra low quiescent current
10.7V gate drive clamp
80ns turn-off propagation delay
Wide Vcc operating range
Direct sensing for both Synchronous Rectifiers
Cycle by Cycle MOT Check Circuit prevents multiple
false trigger GATE pulses
Minimal component count
Simple design
Lead-free
Topology
VD
V OUT
I o+ & I o- (typical)
Turn on Propagation Delay
Turn off Propagation Delay
Package Options
LLC Half-bridge
200V
10.7V Clamped
+1A & -4A
100ns (typical)
80ns (typical)
Typical Applications
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LCD & PDP TV, Telecom SMPS, AC-DC adapters
8-Lead SOIC
Typical Connection Diagram
Vin
SR1
C1
M1
Rg1
Cdc
Lr
1
2
1
2
3
4
GATE1
VCC
VS1
VD1
GATE2
GND
VS2
VD2
8
7
6
5
IR11682
C2
M2
IR1168
Rg2
Cout
LOAD
www.irf.com
Rtn
SR2
? 2010 International Rectifier
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