IR1167BSPBF

www.DataSheet4U.com PRELIMINARY SmartRectifierTM 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 IR1167ASPbF IR1167BSPbF Data Sheet PD60254A • • • • • • • 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 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 transition. 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. Package 8-Lead SOIC IR1167 Application Diagram Vin Rs XFM Cs Ci 1 2 3 RMOT 4 Rdc U1 VCC OVT MOT EN IR1167S VGATE GND VS VD 8 Cdc 6 5 Rg Co Rtn Q1 *Please note...