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ISL6551

Intersil
Part Number ISL6551
Manufacturer Intersil
Description ZVS Full Bridge PWM Controller
Published Jun 17, 2019
Detailed Description ISL6551 ZVS Full Bridge PWM Controller The ISL6551 is a zero voltage switching (ZVS) full-bridge PWM controller designed...
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ISL6551
ISL6551

Overview
ISL6551 ZVS Full Bridge PWM Controller The ISL6551 is a zero voltage switching (ZVS) full-bridge PWM controller designed for isolated power systems.
This part implements a unique control algorithm for fixed-frequency ZVS current mode control, yielding high efficiency with low EMI.
The two lower drivers are PWM controlled on the trailing edge and employ resonant delay while the two upper drivers are driven at a fixed 50% duty cycle.
This IC integrates many features in 28 Ld SOIC package to yield a complete and sophisticated power supply solution.
Control features include programmable soft-start for controlled start-up, programmable resonant delay for zero voltage switching, programmable leading edge blanking to prevent false triggering of the PWM comparator due to the leading edge spike of the current ramp, adjustable ramp for slope compensation, drive signals for implementing synchronous rectification in high output current, ultra high efficiency applications and current share support ...


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