Power supply and method for controlling the same

摘要

A power supply includes an inputter including an input capacitor and configured to receive an input DC voltage, a converter including an output capacitor and configured to convert the input DC voltage and to output the converted DC voltage, and a controller configured to control the converter to output a voltage corresponding to a reference voltage.

主权项

1. A power supply comprising:
an inputter comprising an input capacitor, the inputter being configured to receive an input DC voltage; a converter comprising an inductor and an output capacitor, the converter being configured to convert the input DC voltage and output the converted input DC voltage; and a controller configured to control the converter to convert the input DC voltage corresponding to a reference voltage, the controller comprising:
a variable voltage driving circuit configured to change the reference voltage, and generate a current offset for changing a direction of current flowing through the inductor, in response to the reference voltage being changed;an adder configured to add the current offset and the current flowing through the inductor to generate a value;a current detector configured to detect the value of the addition of the current offset and the current flowing through the inductor; anda pulse width modulation (PWM) signal generator configured to control the converter to provide a voltage stored in the output capacitor to the input capacitor, based on the changed reference voltage and the detected value.