This paper presents an adaptive dead time control for bridgeless GaN based MHz critical conduction mode (CRM) dual phase interleaved Totem Pole PFC. It can achieve the ZVS turn on for all switches in full input voltage range. The theoretical analysis for ZVS turn on both for the main switch and synchronous switch by adaptive dead time at full ranges has been investigated. Then the digital implementation of adaptive dead-time control was introduced. Finally, a prototype of 1kW dual phase GaN based MHz CRM Totem Pole PFC prototype was built to verify the feasibility of the proposed approach.
|Title of host publication||Proceedings of 9th International Power Electronics and Motion Control Conference|
|Publication date||29 Nov 2020|
|Publication status||Published - 29 Nov 2020|
|Event||9th IEEE International Power Electronics and Motion Control Conference - Nanjing, China|
Duration: 29 Nov 2020 → 2 Dec 2020
|Conference||9th IEEE International Power Electronics and Motion Control Conference|
|Period||29/11/2020 → 02/12/2020|
|Series||2020 IEEE 9th International Power Electronics and Motion Control Conference, IPEMC 2020 ECCE Asia|
Bibliographical noteFunding Information:
ACKNOWLEDGMENT The authors would like to thank Samsung Electronics for financial support of this work.
© 2020 IEEE.
- Adaptive dead time
- Critical conduction mode
- GaN based
- Totem Pole PFC
- ZVS turn on