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Showing 1 to 5 of 5 for “"Totem Pole PFC"”.
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Study on Zero Crossing Detection in CRM Totem-pole PFC Converter
The totem-pole PFC is a promising candidate for achieving high efficiency and high-power-density power factor correction. Critical conduction mode (CRM) or triangular current mode (TCM) operation of totem-pole PFCs has become popular for achieving zero-voltage switching (ZVS). This enables pushing …
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CCM Totem Pole Bridgeless PFC with Ultra Fast IGBT
The totem pole PFC suffers from the Mosfet body diode reverse recovery issue which limits this topology adopted in the CCM high power condition. As the ultra-fast IGBT which is capable of providing 100 kHz switching frequency is available in the market, it is possible to apply the totem pole PFC in …
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Characterization and Application of Wide-Band-Gap Devices for High Frequency Power Conversion
… and enhanced packaging, a GaN-based MHz totem-pole PFC rectifier is demonstrated with 99% peak efficiency and 700 W/in3 power density. The switching frequency of the PFC is more than ten times higher than the state-of-the-art industry product while it achieves best possible efficiency and …
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Design and Control of a Compact 7.2 kW GaN-Based Bidirectional Isolated On-Board Charger (OBC)
… (ZCVC) strategy for Power Factor Correction (PFC) applications is developed. This approach ensures a consistent sinusoidal AC current, eliminates second harmonic distortions without notch filters, and achieves stability within 1.5 grid cycles during operational changes. The ZCVC method …
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GaN Device Characterization, Converter Optimization and Development for Enhanced Aviation Systems
… for GaN-based converters. A three-level Totem pole PFC converter for aircraft in-seat power supply is designed and optimized. The three-level topology enables the selection of the 200 V GaN device, leading to smaller conduction loss and a 98.4\% peak efficiency. With the help of the PR …