IR1169S Ver la hoja de datos (PDF) - International Rectifier
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IR1169S Datasheet PDF : 28 Pages
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IR1169S
Description
IR1169 is a smart secondary-side driver IC designed to drive N-Channel power MOSFETs used as synchronous
rectifiers in isolated Flyback, Forward or Half-bridge converters. The IC can control one or more paralleled N-
MOSFETs to emulate the behavior of Schottky diode rectifiers. IR1169 works in both DCM and CCM operation
modes. The SYNC pin should be used in CCM mode to directly turn-off the MOSFET by a signal from secondary
or primary controller. The IC is designed to use simple capacitor coupling interface to communicate with primary
controller. In addition to the SYNC control, 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 all operating modes.
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Nov 6, 2013
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