GaN High Density 300W AC-DC Converter

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 4Sprache: EnglischTyp: PDF

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Ribarich, Tom; Oliver, Stephen (Navitas Semiconductor, USA)
Bredemeier, Peter (ONgineer GmbH, Germany)

A 300W AC-to-DC high-density and low-profile converter has been designed and demonstrated. The circuit topology includes a 2-phase interleaved PFC input stage, an LLC dc-dc stage, and a synchronous rectification output stage. The design includes GaN power ICs and off-the-shelf controllers running at 500kHz. This new design has resulted in a power density of 29W/in3. The waveforms demonstrate zero-voltage switching in all stages and the performance results show high efficiency and acceptable component temperatures.