TDK-Lambda has announced 12V and 48V models of its 504W conduction-cooled PFH500F series of ac-dc power modules measuring 102 x 61 x 13.5mm (4 x 2.4in). Inside PFH500F-12 and PFH500F-48 are GaN power transistors, ‘bridge-less’ power factor correction and digital control, with digital isolators replacing optocouplers for reliability. Peak efficiency is 92%. PMBus is included for programming ...

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