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ISL6551I - ZVS Full Bridge PWM Controller

Key Features

  • in a 28 lead 6mmx6mm2 QFN package to yield a complete and sophisticated power supply solution. Control features include programmable softstart 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 efficien.

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Part Number Description
ISL6551 ZVS Full Bridge PWM Controller
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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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ISL6551I ZVS Full Bridge PWM Controller The ISL6551IREC 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 a 28 lead 6mmx6mm2 QFN package to yield a complete and sophisticated power supply solution.