全桥移相PWM开关电源的数字化控制方案  

The Digital Control Scheme of Full-bridge Phase-shifted PWM Switching Power Supply

作　　者：石宏伟[1] 

机构地区：[1]江阴职业技术学院,电子信息工程系,江苏江阴214433

出　　处：《电力电子技术》2011年第9期108-110,共3页Power Electronics

摘　　要：提出全桥移相PWM开关电源的DSP实现方案框图,对其主电路和控制电路的硬件电路及参数估算进行了详细设计,并对其数字控制系统的软件设计方法进行了研究,全面介绍了一种全桥移相PWM开关电源的数字化控制方案。经软件仿真和实验验证,通过DSP实现数字控制,输入电压在较宽范围内变化时都能获得满意的控制效果,表明该数字化控制方案是可行的。The general block diagram is proposed firstly,then the main circuit and control circuit of full-bridge phase-shifted PWM switching power supply are designed,and the software design method of digital control system is intro-duced.Finally the designed system is simulated with the Pspice simulation software.The simulation results show that the control effect is satisfactory when input voltage changes in a wide range and the digital control scheme is feasible.

关 键 词：开关电源 数字控制 全桥移相 

分 类 号：TN86[电子电信—信息与通信工程]