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AUIR2085S Datasheet(PDF) 3 Page - International Rectifier |
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AUIR2085S Datasheet(HTML) 3 Page - International Rectifier |
3 / 16 page AUIR2085S www.irf.com © 2014 International Rectifier 3 Description The AUIR2085S is a self oscillating half-bridge driver IC with 50% duty cycle ideally suited for 36V – 75V half-bridge DC-bus converters. This product is also suitable for push-pull converters without restriction on input voltage. Each channel frequency is equal to fOSC, which can be set by selecting RT & CT, as for Fig. 1. Dead-time can be controlled through proper selection of CT and can range from 50ns to 200ns, as for Fig.2. Internal soft-start increases the pulse width during power up and maintains pulse width matching for the high and low outputs throughout the start up cycle. Typically soft-start duty cycle varies beginning from 5-10% ramping up to about 50% over 1000 cycles. The AUIR2085S initiates a soft start at power up and after every overcurrent condition. Undervoltage lockout prevents operation if VCC is less than 7.5V. |
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Similar Description - AUIR2085S_15 |
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