【摘要】 具有时序控制的开关电源正在毫米波系统中得到广泛应用。分析了时序控制的基本原理,对影响电源时序控制的各种因素进行了探讨,对现有的时序控制方案进行了分析,提出了开关电源时序控制的基本方法。基于以上方法,较全面地评估了时序控制电路的上电时序控制、掉电时序控制以及短路或过流保护控制。最后采用该方案设计了一个实验电路,仿真和实验电路测试结果表明,分析设计满足要求。更多还原

【Abstract】 The switched power supply based on timing control has been widely used in the millimeter wave system.The principle of timing control was analyzed.Various factors influencing the performances of timing control were taken into consideration.The existing schemes of timing control were analyzed.A kind of basic method of timing control for switched power supply was proposed.Based on the methods,a more comprehensive study was made to estimate effects of timing control,including power on,power off,short-circuit or over-current protection.And a topology suit to timing control was proposed.Finally,a demo board was designed based on the topology.Both simulation and test results showed that the circuit met design specifications.更多还原