CPC H02M 3/155 (2013.01) [H02H 7/1213 (2013.01); H02M 1/44 (2013.01); H02M 7/537 (2013.01); H04B 1/40 (2013.01)] | 20 Claims |
1. A direct current (DC)/DC conversion circuit comprising:
an input end configured to couple to an external power supply to receive power at the DC/DC conversion circuit;
a power circuit;
a first output end;
a switch disposed between the input end and the power circuit; and
a bypass circuit coupled between the input end and the power circuit and disposed between the switch and the power circuit, wherein the bypass circuit is a unidirectional conduction circuit and is coupled to the power circuit in parallel,
wherein the switch is configured to be closed when the input end is reversely coupled to the external power supply, and
wherein when the switch is closed and when the input end is reversely coupled to the external power supply, the DC/DC conversion circuit is configured to:
receive a first current from a positive electrode of the external power supply; and
output the first current to a negative electrode of the external power supply through the bypass circuit and the switch.
|