Power transfer devices

摘要

A power transfer device includes an input terminal, an output terminal, a control unit, and a drive unit. The input terminal can receive an input voltage. The output terminal can provide an output voltage. The control unit can control a switch between the input and output terminals to adjust the output voltage according to the input voltage and a reference voltage, wherein said control unit is deactivated if the reference voltage reaches the input voltage. The drive unit can connect the control unit and the switch if the control unit is activated, and can maintain the output voltage at or near the input voltage if the control unit is deactivated.

主权项

1. A device comprising:
an input terminal configured to receive an input voltage; an output terminal configured to provide an output voltage; a control unit, coupled to said output terminal, configured to control a first switch that is coupled between said input and output terminals to adjust said output voltage according to said input voltage and a reference voltage, wherein said control unit is deactivated if a level of said reference voltage reaches a level of said input voltage; and a drive unit, coupled to said control unit, configured to provide a connection between said control unit and said first switch if said control unit is activated, and configured to maintain a level of said output voltage at or near said level of said input voltage if said control unit is deactivated.