Application of Digital Control Technology in Intrinsic Safety Switching Power Supply
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摘要: 针对部分本质安全型开关电源产品在实际应用中存在输出功率小、工作频率低、输出纹波较大、故障率高等问题,提出了一种基于数字控制芯片DSPIC30F1010/2020的本质安全型开关电源的设计方案,给出了该开关电源的总体结构,重点介绍了该开关电源的硬件电路及其数字控制器的软件设计。通过理论分析、整体设计、仿真、实际电路的调试及安全火花试验,验证了数字控制技术在本质安全型开关电源中应用的可行性。Abstract: In order to solve problems of small output power, low working frequency, large output ripple and high fault rate, the paper proposed a design scheme of applying DSPIC30F1010/2020 digital control chip in intrinsic safety switching power supply, gave the whole structure of the switching power supply, and emphatically introduced design of hardware circuit of the switching power supply and software of the switching power supply's digital controller. The results of theoretical analysis, global design, simulation, circuit debugging and safe spark experiment verified the feasibility of applying digital control technology in intrinsic safety switching power supply.
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