The IR1166STRPBF is a SMARTRECTIFIER? 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 behaviour 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.
- Secondary side high speed SR controller
- DCM, CrCM and CCM flyback topologies
- Anti-bounce logic and UVLO protection
- Micropower start-up and ultra low quiescent current
- 50ns Turn-OFF propagation delay
- Direct sensing of MOSFET drain voltage
- Minimal component count
- Simple design
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