A Microcontroller-Based High Efficiency Critical Conduction Mode Control for GaN-Based Totem-Pole PFC

被引：7
作者：
Chen, Xingyu [1 ]
Son, Gibong [1 ]
Jin, Feng [1 ]
Li, Qiang [1 ]
机构：
[1] Virginia Polytech Inst & State Univ, Ctr Power Elect Syst, Bradley Dept Elect & Comp Engn, Blacksburg, VA 24061 USA
来源：
2021 IEEE 22ND WORKSHOP ON CONTROL AND MODELLING OF POWER ELECTRONICS (COMPEL) | 2021年
关键词：
GaN; totem-pole PFC; critical conduction mode (CRM); zero voltage switching (ZVS); digital control; RECTIFIER;
D O I：
10.1109/COMPEL52922.2021.9646009
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper introduces a new control method for Gallium-Nitride (GaN) device based critical conduction mode (CRM) totem-pole power factor correction (PFC) rectifiers. A simple digital control method based on synchronous rectifier (SR) on-time calculation is proposed such that the converter operates in CRM, achieves zero voltage switching (ZVS), realizes high efficiency, and also avoids the delay and noise issues from zero-current detection (ZCD) circuit. Average current mode control is implemented to achieve unity power factor (PF) and low total harmonic distortion (THD). The proposed control method is implemented in a microcontroller unit (MCU) and demonstrated on a two-phase interleaved 2.2kW GaN-based totem-pole PFC prototype.
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收藏
页数：7
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