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

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...

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Veröffentlicht in:Energies (Basel) 2019-03, Vol.12 (5), p.899
Hauptverfasser: Suh, Jung-Duk, Yun, Yeong-Ho, Kong, Bai-Sun
Format: Artikel
Sprache:eng
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Zusammenfassung: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.
ISSN:1996-1073
1996-1073
DOI:10.3390/en12050899