A 93.4% efficiency 42cc type-C power delivery adaptor with PMOS integration power line extension method

IEICE Electronics Express

article

Xiaofeng Lyu¹  Haoyu Dai¹  Hua Chen¹  Faxin Yu¹ 

[1] School of Aeronautics and Astronautics, Zhejiang University

关键词: DC-link capacitor;    power delivery;    high efficiency;    ultra-density;    integration control;   

DOI  :  10.1587/elex.19.20220226

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

This paper presents a dc-link capacitor reduction method with P-MOS integrated control method. When compared with SCR chopping method, this novel method can easily integrate the auxiliary switch and control function circuits into one simple chip. Furthermore, the P-MOS control ground can be directly connected onto bus ground. This connection method is convenient to integration and easy drive. The theoretical analysis and detailed control method is given. Furthermore, one ultra-high efficiency GaN-based 65W prototype is made to verify it. The results show that with 27uF*4 bulk caps and integration control method, efficiency can achieve 93.4% at 90VAC with the PCB size 44*31*31mm, 42.3cc under the same dc-link capacitance. Dynamic and EMI performance are also verified. This method is suitable to commercial controller integration for ultra-density and high-efficiency type-c power delivery (PD) applications.

【 授权许可】

CC BY