Isolated and non-isolated dc-dc buck converter

STMicroelectronics has created a 5W dc-dc buck converter IC that produces a regulated non-isolated output plus one or more transformer-coupled isolated outputs. The isolated secondary voltage is governed by the transformer turns ratio – no optocoupler is needed. “Common uses include powering gate drivers for SiC mosfets and IGBTs that require asymmetrical isolated power rails, and ...

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