High-Efficiency DC–DC Converter with Charge-Recycling Gate-Voltage Swing Control

Energies

Bai-Sun Kong¹  Jung-Duk Suh¹  Yeong-Ho Yun² 

[1] College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea;Memory Division, Samsung Electronics Co., Ltd., Hwasung 445701, Korea;

关键词: Buck converter;    high efficiency;    charge-recycling;    gate-voltage swing control;   

DOI  :  10.3390/en12050899

来源: DOAJ

【 摘 要 】

This paper proposes a high-efficiency DC–DC converter with charge-recycling gate-voltage swing control with a light load. By achieving a variable gate-voltage swing in a very efficient manner by charge recycling, the power efficiency has been substantially improved due to the lower power consumption and the achieved balance between the switching and conduction losses. A test chip was fabricated using 65-nm CMOS technology. The proposed design reduces the gate-driving loss by up to 87.7% and 47.2% compared to the conventional full-swing and low-swing designs, respectively. The maximum power conversion efficiency was 90.3% when the input and output voltages are 3.3 V and 1.8 V, respectively.

【 授权许可】

Unknown