Abstract
This paper presents an modified GaN-based bridgeless Dual single-ended primary inductor converter (SEPIC) PFC with full-range zero-voltage switching (ZVS) turn-on for the application of a step-down AC-DC converter. To achieve the ZVS turn-on for main switches, the conventional SEPIC PFC's synchronous diode is replaced by MOSFET. Thus, the synchronous switch can provide some negative current by adding more extra turn-on time after the current of the synchronous switch decrease to zero. Operational analysis of the bridgeless SEPIC PFC and theoretical analysis for the ZVS turn-on have been investigated. The analysis and design are verified by experimental results by a 97% peak efficiency 300 W prototype with a switching frequency range from 400 kHz to 1 MHz.
Original language | English |
---|---|
Title of host publication | Proceedings of 36th Annual IEEE Applied Power Electronics Conference and Exposition |
Publisher | IEEE |
Publication date | 2021 |
Pages | 252-259 |
ISBN (Print) | 9781728189505 |
DOIs | |
Publication status | Published - 2021 |
Event | 2021 IEEE Applied Power Electronics Conference and Exposition - Virtual event, Phoenix, United States Duration: 14 Jun 2021 → 17 Jun 2021 https://ieeexplore.ieee.org/xpl/conhome/9486978/proceeding |
Conference
Conference | 2021 IEEE Applied Power Electronics Conference and Exposition |
---|---|
Location | Virtual event |
Country/Territory | United States |
City | Phoenix |
Period | 14/06/2021 → 17/06/2021 |
Internet address |
Keywords
- CRM bridgeless Dual-SEPIC PFC
- Digital control
- GaN device
- ZVS
- Dual-SEPIC PFC