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开关电源模块并联供电系统以Buck电路为核心,以STM32为主控制器,采用TL494开关电源芯片来产生PWM,以此来控制Buck电路中场效应管的开关,从而实现理想直流信号的产生,误差绝对值不超过2%。同时系统具有输出过流保护功能,且可以实现对输入电压、输出电压和输出电流的测量和检测。
Switching power supply module parallel power supply system to Buck circuit as the core to STM32-based controller, the use of TL494 switching power supply chip to generate PWM, in order to control the FET Buck FET circuit in order to achieve the desired DC signal generation, error Absolute value does not exceed 2%. At the same time the system has output overcurrent protection, and can achieve the input voltage, output voltage and output current measurement and detection.