A radiation-hardened Buck converter

Pengbo Yang; Ping Luo; Bo Li; Haoyang Xiao; Rongxun Lin; Xiao Zhou; Shaowei Zhen

doi:10.1587/elex.16.20190244

This article has now been updated. Please use the final version.

A radiation-hardened Buck converter

Pengbo Yang, Ping Luo, Bo Li, Haoyang Xiao, Rongxun Lin, Xiao Zhou, Shaowei Zhen

Author information

Pengbo Yang
State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China
Ping Luo
State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China
Bo Li
State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China
Haoyang Xiao
State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China
Rongxun Lin
State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China
Xiao Zhou
State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China
Shaowei Zhen
State Key Laboratory of Electronic Thin Films and Integrated Devices University of Electronic Science and Technology of China

Keywords: Buck converter, radiation hardening, adaptive on-time, leakage current compensation

JOURNAL FREE ACCESS Advance online publication

Article ID: 16.20190244

DOI https://doi.org/10.1587/elex.16.20190244

The final version of this article is now available: Vol. 16 (2019), No. 13 pp. 20190244-20190244

Details

Abstract

Buck converter is widely used in the aerospace field. However, radiation in the aerospace environment will result in degradation or failure of devices and circuits. This paper presents a radiation-hard Buck, which is an adaptive on-time Buck. A radiation-hard adaptive on-time generator is proposed by utilizing of leakage current compensation. The proposed radiation-hard adaptive on-time generator is composed of an adaptive on-time timing block and a charging current generator. Finally, the proposed Buck is fabricated in a standard 0.18μm BCD process. And the radiation tests show that the Buck still maintains stability after total ionizing dose irradiation at a total dose of 350Krad (Si).

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