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本开关电源是利用固定频率调节占空比(PWM)来控制输出电压,采用电源集成控制器芯片UC3842,输出直流5V/5A,电源工作频率高,启动电流小于1m A,结构简单、体积小、调试容易、性价比高,具有欠压、过流、过压等多种保护功能,具有较高性价比。
The switching power supply is the use of a fixed frequency to adjust the duty cycle (PWM) to control the output voltage, the power integrated controller chip UC3842, output DC 5V / 5A, power supply high frequency, starting current is less than 1m A, simple structure, small size, Debugging easy, cost-effective, with undervoltage, overcurrent, overvoltage and other protection features, with a high cost.