Abstract:This paper develops a kind of power-supply module that uses digital control and buck circuit. The module can convert 220V alternating current into 0-30V direct current. In the aspect of circuit design, it is mainly AC-DC, DC-DC conversion circuit and SCM minimum system circuit. In the aspect of control circuit, for feedback signal of current sensor, the power-supply module can obtain average value by multiple methods and remove the mutation value.
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