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一种双极工艺下抗辐照PWM推挽转换电路的研究

更新时间:2020-06-03 05:29:45 大小:624K 上传用户:守着阳光1985查看TA发布的资源 标签:pwm 下载积分:5分 评价赚积分 (如何评价?) 收藏 评论(0) 举报

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利用双稳态竞争原理,通过状态保持电路和状态转换电路的配合,实现一种基于双极器件的PWM推挽转换电路,该电路对辐照后双极器件的电流增益退化不敏感.采用华越双极2μm工艺进行流片而没有进行任何工艺加固.并在Co-60辐照源,5.6rad(Si)/s剂量率,100krad(Si)总剂量的条件下进行抗辐照实验,结果表明,单管的电流增益退化至55%~65%,而电路功能完全正常,PWM所驱动的功率管在低电平时完全截止,导通时压降仅提升了12%~22%.

A push-pull PWM converter based on bipolar process is proposed and verified.The dual outputs status push-pull shifting is realized through the cooperation of a status maintainer and a status switcher.Utilizing the bi-stable race,the circuit is insensitive to the current gain degeneration caused by irradiation.The circuit is manufactured via HUAYUE 2μm bipolar process and irradiated by Co-60 radiation source at the 5.6rad(Si)/s dosage rate and 100krad(Si) total dose.The test results indicate that the circuit is functional correctly while the single NPN device has current gain degeneration of 55%~65%.The bipolar power device driven by converter is fully cut when turned off,and the turn on voltage drop sees 12%~22% incre...

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一种双极工艺下抗辐照PWM推挽转换电路的研究.pdf 624K

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