本开关电源设计是采用STC12C5A60S2单片机产生47KHZ的PW

本开关电源设计是采用STC12C5A60S2单片机产生47KHZ的PWM脉冲信号，经过IR2104控制同步整流的BUCK（BOOST）电路。单片机内部自带的10位ADC能通过电压电流检测电流实时反馈电流和电压数值。当按键设定在放电状态时，同步整流电路为BUCK状态,能输出0.5~2A的电流，按键步进值为0.04A，形成电流电压闭环控制系统。当按键设定在充电状态时，同步整流电路为BOOST状态,能输出30V电压，形成电压闭环控制系统。液晶屏幕能显示输入电压，输出电压，输出电流，设定电流的值。
测试结果：同步BUCK效率为94%，同步BOOST效率为96.12%。具有充电过压保护功能。

結果 (中文) 3:

The switching power supply design is the use of STC12C5A60S2 microcontroller 47KHZ pulse signal generated by the IR2104 control synchronous rectification BUCK (BOOST) circuit. SCM built-in 10 bit ADC can detect current through voltage and current real-time feedback current and voltage value. When the key is set in the discharge state, the synchronous rectification circuit is BUCK state, can output 0.5~2A current, the key step value of 0.04A, the formation of current and voltage closed-loop control system. When the key is set in the charging state, the synchronous rectification circuit is BOOST state, can output 30V voltage, forming a closed-loop voltage control system. LCD screen can display input voltage, output voltage, output current, set the value of the current.Test results: synchronous BUCK efficiency of 94%, synchronous BOOST efficiency of 96.12%. Charging overvoltage protection function.