嵌入式微机与PWM联合控制的脉冲电源研制

Pulse Power Supply based on Embed System and PWM

为了使高频直流脉冲电源的输出参数可调,从而使电源能更好地适应负载大范围变化的工作状况,将嵌入式单片机控制技术与PWM调制芯片SG3525相结合,成功研制了一种可变频率输出直流脉冲电源。该电源利用SG3525芯片调节和控制直流脉冲的电压,利用嵌入式微机C8051F330GM控制脉冲的频率和占空比,使电源输出直流脉冲的频率、电压和占空比均大范围连续可调。实验结果表明,所研制的高频直流脉冲电源电压稳定度小于0.3%,且电源具有参数可调节范围宽、稳定性好、结构简单的优点。

In order to improve the output parameters of high-frequency pulse power supply and adapt the uses in loads change with large scale,a DC pulsed power supply is designed by embedded micro-computer C8051F330GM and PWM adjustor of SG3525.The SG3525 is used to adjust the pulse voltage,and the C8051F330GM is used to control the pulse frequency and duty cycle.The method makes the frequency, voltage and duty cycle of the pulse power supply be adjusted conveniently and continuously.The experimental results show that the voltage stability is less than 0.3%.The power supply is reliable and its structure is simple.