基于TL494构成推挽式9～15 V开关电源的设计

Design of Push-pull 9～15 V Switching Power Supply Based on TL494

以TL494芯片为核心,分析其电路结构、工作原理及参数等,选取参数适合的电容、电感及电阻等元器件,利用TL494设计9~15V推挽式开关电源的电路结构,进而实现交流220V转变为12V的目标。该电源性能稳定、电路简单、成本低,可以对音响、蓄电池等进行充电。

Taking the TL494 chip as the core,the circuit structure,working principles,and parameters are analyzed, and the capacitors,inductors,and resistors that are suitable for the parameters are selected.The circuit structure of the 9-15V Push-Pull switch power supply is designed using TL494.Then achieve the goal of converting the AC 220 V to 12 V. The power supply has stable performance,simple circuit and low cost,and can charge the audio and battery.