局用通信设备中开关电源动态性能的改善方法

Improving Dynamic Performance of Switching Power Supply for Local Chassis Equipments of Telecom Systems

针对局端通信设备中开关电源的负荷变化范围大,在加载、卸载时给开关电源装置造成强扰动,进而影响电源的稳压性能等问题,对开关电源的固有特性建立了数学模型。在对产生上述问题的原因进行深入分析的基础上,提出了改善开关电源性能的可行方法。

Focused on the application of switching-mode power supply for local equipments of telecom systems, the special features such as the wide range of load changes, the severe disturbance from adding on modules with heavy load or removing user card from chassis are discussed. The dynamic load changes affect the precision of the voltage regulator. To improve the dynamic performance of the switching power supply, the system characteristic modeling is presented, the causes of the critical system performance are analyzed and the practical design of a good perormance supply is proposed.