Design of an average-current-mode noninverting buck-boost DC-DC converter with reduced switching and conduction losses

Chia Ling Wei, Chin Hong Chen, Kuo Chun Wu, I. Ting Ko

Research output: Contribution to journalArticlepeer-review

78 Citations (Scopus)

Abstract

With the rapid growth of battery-powered portable electronics, an efficient power management solution is necessary for extending battery life. Generally, basic switching regulators, such as buck and boost converters, may not be capable of using the entire battery output voltage range (e.g., 2.5-4.7V for Li-ion batteries) to provide a fixed output voltage (e.g., 3.3 V). In this paper, an average-current-mode noninverting buck-boost dc-dc converter is proposed. It is not only able to use the full output voltage range of a Li-ion battery, but it also features high power efficiency and excellent noise immunity. The die area of this chip is 2.14 × 1.92mm 2 , fabricated by using TSMC 0.35 μm 2P4M 3.3 V/5V mixed-signal polycide process. The input voltage of the converter may range from 2.3 to 5V with its output voltage set to 3.3V, and its switching frequency is 500 kHz. Moreover, it can provide up to 400-mA load current, and the maximal measured efficiency is 92.01%.

Original languageEnglish
Article number6177674
Pages (from-to)4934-4943
Number of pages10
JournalIEEE Transactions on Power Electronics
Volume27
Issue number12
DOIs
Publication statusPublished - 2012

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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