IR1167ASPBF_09 Datasheet, PDF (1/16 Pages) International Rectifier – SmartRectifierTM CONTROL IC

Data Sheet PD60254F
IR1167ASPbF
IR1167BSPbF
SmartRectifier^TM CONTROL IC
Features
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Secondary side high speed SR controller
DCM, CrCM and CCM flyback topologies
200V proprietary IC technology
Max 500KHz switching frequency
Anti-bounce logic and UVLO protection
7A peak turn off drive current
Micropower start-up & ultra low quiescent
10.7/14.5V gate drive clamp
current
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50ns turn-off propagation delay
Vcc range from 11.3V to 20V
Direct sensing of MOSFET drain voltage
Minimal component count
Simple design
Lead-free
Compatible with 1W Standby, Energy Star, CECP,
etc.
Description
Package
IR1167S is a smart secondary side driver IC designed to drive N-Channel power MOSFETs
used as synchronous rectifiers in isolated Flyback converters.
The IC can control one or more paralleled N-MOSFETs to emulate the behavior of Schottky
diode rectifiers. The drain to source voltage is sensed differentially to determine the polarity
of the current and turn the power switch on and off in proximity of the zero current transi-
tion.
Ruggedness and noise immunity are accomplished using an advanced blanking scheme
and double-pulse suppression which allow reliable operation in continuous, discontinuous
and critical current mode operation and both fixed and variable frequency modes.
8-Lead SOIC
IR1167 Application Diagram
Vin
Rs
Rdc
Cs
Ci
XFM
U1
Cdc
1 _{VCC VGATE} 8
2 _OVT
GND ⁷
3 _MOT
VS ⁶
Co
RMOT
4 _EN
VD ⁵
IR1167S
Rg
Rtn
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Q1
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