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IR1176SS Datasheet(PDF) 1 Page - International Rectifier |
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IR1176SS Datasheet(HTML) 1 Page - International Rectifier |
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1 / 12 page  Packages SYNCHRONOUS RECTIFIER DRIVER Features • Provides constant and proper gate drive to power MOSFETs regardless of transformer output • Minimizes loss due to power MOSFET body drain diode conduction • Stand alone operation - no ties to primary side • Schmitt trigger input with double pulse suppress- ion allows operation in noisy environments • High peak current drive capability - 4A • High speed operation - 2MHz • Adaptable to multiple topologies Description The IR1176 is a high speed CMOS controller designed to drive N-channel power MOSFETs used as synchro- nous rectifiers in high current, high frequency forward converters with output voltages equal or below 5VDC. Schmitt trigger inputs with double pulse suppression allow the controller to operate in noisy environments. The circuit does not require any ties to the primary side and derives its operating power directly from the secondary. The circuit functions by anticipating transformer output transitions, then turns the power MOSFETs on or off before the transitions of the trans- former to minimize body drain diode conduction and reduce associated losses. Turn on/off lead time can be adjusted to accommodate a variety of power MOSFET sizes and circuit conditions. The IR1176 also provides gate drive overlap/dead-time control via external components to further minimize diode con- duction by nulling effects of secondary loop and de- vice package inductance. Vdd 5Vdc IO+/- (peak) 4A/4A Fmax 2MHz Max lead time 500nsec Product Summary IR1176S 20 Lead Surface Mount (SSOP-20) IR1176 20 Lead PDIP (MS-001AD) IR1176SS 20 Lead SOIC (MS-013AC) IR1176 Preliminary Data Sheet PD60185-C |
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Similar Description - IR1176SS |
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