Switch power supply driving circuit

Published:2011/6/16 7:17:00 Author:TaoXi | Keyword: Switch, power supply, driving circuit | From:SeekIC

The driving circuit principle diagram: The switching power supply drivingcircuit: The main function of the driving circuit is to amplify the variable width pulse which is output by the pulse width controller, so the variable width pulse can be used as the driving signal of the high voltage power switching device. The driving circuit generally has the isolation effect, it usually uses the transformer coupling method to achieve the isolation between the high voltage power switching device's incentive input stage and incentive output stage, and it also exerts the reverse bias to accelerate the turn-off of the device. In the figure, the primary coil input signal of the driving transformer is the output driving signal of the control circuit.



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