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IR1161LPBF Datasheet(PDF) 3 Page - International Rectifier |
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IR1161LPBF Datasheet(HTML) 3 Page - International Rectifier |
3 / 25 page IR1161LPBF 3 www.irf.com © 2015 International Rectifier Submit Datasheet Feedback June 1, 2015 Description The IR1161 is a synchronous rectification control IC designed to drive an N-Channel power MOSFET in a secondary output rectifier circuit. The MOSFET gate is switched on and off to bypass its body diode during the of the conduction period to minimize power dissipation, remaining off during the blocking period. The drain to source voltage is accurately sensed to determine the direction and magnitude of the current allowing the IR1161 to turn the MOSFET on and off at close to zero current. An integrated cycle-by-cycle minimum on time (MOT) protection circuit automatically detects a no load condition and turns off the gate driver output preventing negative current from flowing through the MOSFET. Ruggedness and noise immunity are accomplished using an advanced blanking scheme and double-pulse suppression, which allows reliable operation in all operating modes. |
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