ISL78223 Description
DATASHEET ISL78223 ZVS Full-Bridge PWM Controller with Adjustable Synchronous Rectifier Control FN7936 Rev.4.00 May 8, 2017 The ISL78223 is a high performance Zero Voltage Switching (ZVS) full-bridge PWM controller. It achieves ZVS operation by driving the upper bridge FETs at a fixed 50% duty cycle while the lower bridge FETs are trailing-edge modulated with adjustable resonant switching delays.
ISL78223 Key Features
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- Adjustable resonant delay for ZVS operation
- Synchronous rectifier control outputs with adjustable
- Voltage or current mode control
- 3% current limit threshold
- Adjustable average current limit
- Adjustable deadtime control
- 175µA start-up current
- Supply UVLO