Selectable Output Voltage High Efficiency Boost Converter

Author:

Cheng Li-Ye1ORCID,Sun Chen1,Zhou Zhen-Wei1

Affiliation:

1. Science and Technology on Reliability Physics and Application of Electronic Component Laboratory, the Fifth Electronics Research Institute of Ministry of Industry and Information Technology, Guangzhou 510610, P. R. China

Abstract

The paper proposed a high efficiency boost converter with constant voltage (CV) and constant current (CC) modes. The selection of CV or CC working mode is based on the requirement, and the transient time from CV to CC mode is 230[Formula: see text][Formula: see text]s. The boost converter is particularly for the use of Li-ion battery portable devices. High efficiency is obtained by sleep/burst mode under light load and pulse width modulation (PWM) mode under heavy load. The quiescent current of the whole chip can be down to 6[Formula: see text][Formula: see text]A when the converter enters the standby mode. The converter has been made of 0.35[Formula: see text][Formula: see text]m complementary metal-oxide semiconductor (CMOS) process. Experimental results show that the peak efficiency is 98.2% at a 1.5[Formula: see text]A output current and a 4.2[Formula: see text]V input voltage.

Funder

Science and Technology Research Project of Guangdong under GrantScience and Technology Research Project of Guangdong under Grant

Publisher

World Scientific Pub Co Pte Lt

Subject

Electrical and Electronic Engineering,Hardware and Architecture,Electrical and Electronic Engineering,Hardware and Architecture

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