ISL78223 Description
ZVS Full-Bridge PWM Controller with Adjustable Synchronous Rectifier Control ISL78223 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
- Q100 rated. The ISL78223 is rated for the automotive temperature range (-40°C to +105°C)
- 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
- Adjustable oscillator frequency up to 2MHz