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

Jung-Duk Suh, Yeong-Ho Yun and Bai-Sun Kong
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Jung-Duk Suh: College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea
Yeong-Ho Yun: Memory Division, Samsung Electronics Co., Ltd., Hwasung 445701, Korea
Bai-Sun Kong: College of Information and Communication Engineering, Sungkyunkwan University, Suwon 16419, Korea

Energies, 2019, vol. 12, issue 5, 1-12

Abstract: 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.

Keywords: Buck converter; high efficiency; charge-recycling; gate-voltage swing control (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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