TWO-OUTPUT CHARGING CIRCUIT AND METHOD FOR CONTROLLING ITS AUXILIARY CIRCUIT SWITCH
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United States of America Patent
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Issued Date -
Mar 23, 2023
app pub date -
Nov 23, 2022
filing date -
May 27, 2020
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Abstract
The present invention discloses a two-output charging circuit and a method for controlling its auxiliary circuit switch. The two-output charging circuit includes two first-stage switch transistors in the half-bridge inverter circuit generating dead time at changing-over and turn-on, and the second-stage switch transistor being turned off within the dead time. In the present invention, making use of a magnetic core to return from the reverse in its bidirectional magnetization process generates dead time, and controlling the time sequence of the switch device of the post-circuit in the dead time abates the voltage stress of the synchronous rectifier diode and reduces the loss of the absorption circuit of the synchronous rectifier circuit.
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