针对某机载预警雷达接收机需求,研制了一种高精度、低噪声线性稳压电源。文中对电源系统架构、电磁干扰滤波器、降压变压器、整流滤波电路、功率变换电路、并联冗余电路、保护电路进行了理论分析和仿真,并给出了试验样机工作波形和测试数据。电源具有双路并联冗余、输出限流保护及自恢复功能,输出纹波可小于2 mV。该电路设计方法已广泛应用于机载预警雷达接收机电源领域。

A kind of high-accuracy and low-noise linear regulator power supply is designed for the requirement of certain receiver in airborne early warning radar. The structure of power supply system, the electro magnetic interference filter, the step-down transformer, the rectifier filter circuit, the power conversion circuit, the parallel redundant circuit and the protection circuit are theoretically analyzed and simulated. The work wave shape and test data of a test prototype are given. This power supply has functions of two-way parallel redundancy, output current limit protection and self-recovery, the output ripple can be less than 2 mV. This circuit design method has been widely used in airborne early warning radar receiver power supply domain.

TN957.5