ISL6752 Datasheet | Renesas

ZVS Full-Bridge Current-Mode PWM with Adjustable Synchronous Rectifier Control FN9181 Rev 4.00 August 1, 2016 The ISL6752 is a high-performance, low-pin count alternative Zero-Voltage Switching (ZVS) full-bridge PWM controller. Like Intersil’s ISL6551, 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. pared to the more familiar phase-shifted control method, this algorithm offers equivalent efficiency and improved overcurrent and light load performance with less plexity in a lower pin count package. The ISL6752 Features plemented PWM outputs for Synchronous Rectifier (SR) control. The plemented outputs may be dynamically advanced or delayed relative to the PWM outputs using an external control voltage. This advanced Bi CMOS design Features precision dead time and resonant delay control and an oscillator adjustable to...