The step-up switch power supply circuit

Published:2011/6/23 3:35:00 Author:qqtang | Keyword: step-up, switch power supply | From:SeekIC

The step-up switch power supply circuit is shown in the figure. When VT1 is conducting, the inductor L is storing energy. When VT1 is blocked, L is inducting a voltage whose left side is passive and right side is positive, the voltage is added on the input voltage, and it provides with power with the help of VD1, which makes the output voltage higher than the input voltage and that forms a step-up switch power supply.



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