AUIR2085S Self-oscillating Half-bridge Driver
The AUIR2085S is a rugged, general purpose high speed self-oscillating half bridge driver which was specifically designed, tested and qualified for use in harsh environments such as automotive under-the-hood applications. Proprietary HVIC technology enables ruggedized monolithic construction and an industry benchmark negative voltage spike immunity for fail proof operation even under extreme switching conditions and short circuit events.
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Features
- Simple primary side control solution to enable half-bridge DC-Bus converters for 48V distributed systems with reduced component count and board space.
- Integrated 50% duty cycle oscillator and half-bridge driver IC in a single SO-8 package
- Programmable switching frequency with up to 500 kHz max per channel
- +/- 1A drive current capability optimized for low charge MOSFETs
- Adjustable dead-time 50ns – 200ns
- Floating channel designed for bootstrap operation up to +100Vdc
- High and low side pulse width matching to +/-25ns
- Adjustable over-current protection
- Under-voltage lockout and internal soft start
- Lead-free, RoHS compliant
- Automotive qualified
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Advantages
- The AUIR2085S is a self oscillating half-bridge driver IC with 50% duty cycle ideally suited for 36V-75V.
- The AUIR2085S initiates a soft start at power up and after every over-current condition. Under-voltage lockout prevents operation if VCC is less than 7.5V.
- The IC is qualified according to AEC-Q100 standards and features an environmentally friendly, lead-free and RoHS compliant bill of material and are part of International Rectifier’s Zero-Defect initiative.
- The AUIR2085S is set up to be in line with typical change management requirements of the automotive market.
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