Patent ID: 7548043
Filing Date: 2009-06-16
Classification: G05F

Abstract:
1. A power supply apparatus having an output terminal coupled to a load, wherein the power supply apparatus outputs an output voltage through the output terminal, the power supply apparatus comprising: a current modulation unit, for receiving an input voltage and a control signal and generating an output current, wherein the current modulation unit adjusts the amount of the output current according to the control signal; a voltage converting unit, coupled to the current modulation unit, for converting the output current into the output voltage; a current detector, coupled between the voltage converting unit and the output terminal, for detecting the current flowing through the load and outputting a current detection result; and a control unit, coupled to the current modulation unit, the current detector and the output terminal, for receiving the current detection result and the output voltage, and generating the control signal according to the current detection result and the output voltage.