IR1167ASPBF Datasheet, PDF (1/15 Pages) International Rectifier – SmartRectifier CONTROL IC

PRELIMINARY
Data Sheet PD60254A
IR1167ASPbF
IR1167BSPbF
SmartRectifier^TM CONTROL IC
Features
• 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 current
• 10.7/14.5V gate drive clamp
• 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
8-Lead SOIC
and critical current mode operation and both fixed and variable frequency modes.
IR1167 Application Diagram
Vin
Rs
Rdc
Cs
Ci
XFM
U1
Cdc
1
8
VCC VGATE
2 _OVT
GND ⁷
3 _MOT
VS ⁶
Co
RMOT
4 _EN
VD ⁵
IR1167S
Rg
Rtn
Q1
*Please note that this data sheet contains advanced information that could change before the product is released to production.
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