中圖分類號： TM46 文獻標識碼： A DOI：10.16157/j.issn.0258-7998.211535 中文引用格式： 高東輝，賀啟峰,，徐成寶,，等. 一種適用于空間輻照環(huán)境的自主均流電路研究[J].電子技術(shù)應用，2021,，47(11)：116-119,，124. 英文引用格式： Gao Donghui，He Qifeng,，Xu Chengbao,，et al. Research on an automatic current-sharing circuit for space radiation environment[J]. Application of Electronic Technique，2021,，47(11)：116-119,，124.
Research on an automatic current-sharing circuit for space radiation environment
Gao Donghui，He Qifeng,，Xu Chengbao,，Cai Kehong
The 43 Research Institute of CETC，Hefei 230088,，China
Abstract： In order to solve the application limitation of current sharing control chip in space radiation environment, on the basis of traditional switching power supply automatic current sharing circuit, using discrete device structure based on operational amplifier, an improved automatic current sharing circuit is proposed. It uses the alternating operation of an operational amplifier to realize the functions of a unidirectional buffer and an operational amplifier, which simplifies the circuit structure; In addition, a diode is added between the output of the current sharing operational amplifier and the output voltage feedback terminal, which solves the problem of poor load regulation in the traditional automatic current sharing circuit. The working principle of the circuit is analyzed in detail, the experimental verification of the circuit is carried out in a single-ended forward 100 W output DC/DC converter, the experimental results show the effectiveness and practicability of the circuit.
Key words : switching power supply,；automatic current sharing；radiation resistance
