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The principles of IGBT drive and short2circuit protection circuit M57959L are introduced in details and their character2 istics are also analysed.

单片机通过比较给定电压和实际输出电压，调整直流斩波电路的占空比，并输出相应占空比的二进制数给数字分频电路，该电路即会产生相应高精度的PWM波形，从而调整直流稳压电源的输出电压