The principle circuit of the switch regulated power supply

Published:2011/6/23 1:41:00 Author:qqtang | Keyword: principle circuit, regulated power supply | From:SeekIC

The principle circuit of the switch regulated power supply is shown in the figure.After the AC voltage is past the rectifier circuit and the filter circuit, it becomes a DC voltage which contains some impulse, the voltage flows into the high frequency converter and is turned into a wave square of needed voltage, finally, the square wave is rectified and becomes a needed DC voltage.The control circuit is a pulse width modulator, which mainly consists of sub-circuits of the sampler, the oscillator, the pulse width modulator and the reference voltage, etc.



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