Dual-output switched-capacitor DC-DC converter with peseudo-three-phase swap-and-cross control and amplitude modulation mechanism

Chia Min Chen, Chun Yen Chiang, Chen Cheng Du, Fang Ting Chou, Chung-Chih Hung

研究成果: Conference contribution同行評審

摘要

This paper presents an inductorless dual-output switched-capacitor DC-DC converter employing pseudo-three-phase swap-and-cross control (PTPSCC) and an amplitude modulation mechanism (AMM). The AMM circuit scales the amplitudes of the driving signals for the switches according to the loading conditions in order to minimize switching losses. To reduce output ripples, average charge distribution, and improve regulation, the PTPSCC circuit continuously switches power transistors to deliver enough charge to the outputs by keeping at least one flying capacitor connected to each output. The two outputs were regulated at 2.5 V and 0.8 V with input ranges of 1.7-2 V. The maximum output loading was 100 mA for both outputs. A power efficiency of 90.5% was achieved at a maximum total output power of 330 mW with a switching frequency of 500 kHz. The maximal peak-to-peak output ripple voltages for the two outputs under 100 mA load currents were suppressed to below 26 mV and 20 mV, respectively.

原文English
主出版物標題Proceedings of the 2013 IEEE Asian Solid-State Circuits Conference, A-SSCC 2013
頁面57-60
頁數4
DOIs
出版狀態Published - 2013
事件2013 9th IEEE Asian Solid-State Circuits Conference, A-SSCC 2013 - Singapore, Singapore
持續時間: 11 11月 201313 11月 2013

出版系列

名字Proceedings of the 2013 IEEE Asian Solid-State Circuits Conference, A-SSCC 2013

Conference

Conference2013 9th IEEE Asian Solid-State Circuits Conference, A-SSCC 2013
國家/地區Singapore
城市Singapore
期間11/11/1313/11/13

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