Switching power supply work principle

Switching power supply work principle
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The working process of switch power supply is fairly easy to understand, in the linear power supply, let power transistors work in the linear model, and linear power supply different is, PWM switch power supply is let power transistors work in conduction and shut off the state in which two states, add in power transistors on the v-Ann product is small (at turn-on, low voltage, current, and shut off, high voltage, current small) / power components of the product is power semiconductor current-voltage effects loss. Compared with linear power supply, PWM switch power supply work more effectively process is through "the chopper", namely the input dc voltage chop into amplitude equals input voltage amplitude of the pulse voltage to fulfill. The pulse of empty than by switching power supply to adjust the controller. once