【摘要】 设计了一种具有频率识别功能的抗辐射高压电源。该电路鉴频范围15~25 kHz,输出电压7 800 V,输出电压建立时间小于1 s。通过对电路结构的优化,减少了输出高压建立时间,减小了鉴频电路对输出电压的延时;通过采用数字鉴频,提高了鉴频电路的抗辐射能力,提升了整体电路的综合抗辐射能力。研制的具有鉴频功能的高压电源可同时满足抗中子注量、抗总计量、抗γ剂量率等要求。仿真结果和最终测试波形表明,电路设计满足要求。更多还原

【Abstract】 A radiation-hardened high voltage power supply with frequency discriminator in the range from 15 kHz to 25 kHz was presented.The converter can output 7800 V in less than 1 s.The high voltage settling time and output voltage delay imposed by digital frequency discriminator were reduced by optimizing circuit structure.Radiation hardness of the frequency discriminator was improved by using digital discriminator,and the overall radiation tolerance of the whole circuit was increased through hardening key devices.The high voltage converter could satisfy requirements of the circuit for neutron flux,total dose radiation and γ dose flux tolerances.Both simulation and test results showed that the circuit met design specifications,which demonstrated the feasibility of the radiation-hardened high voltage converter.更多还原