Power converter of modulating reference voltage based on output voltage

Abstract

A power converter of modulating a reference voltage based on an output voltage is provided. The power converter includes a high-side switch, a low-side switch, a comparator, a reference voltage generating circuit and a switching circuit. A second terminal of the low-side switch is connected to a second terminal of the high-side switch and a first terminal of an inductor. A second terminal of the low-side switch is grounded. A first input terminal of the comparator is connected to a second terminal of the inductor. The reference voltage generating circuit outputs a reference voltage to a second input terminal of the comparator according to an output voltage of the second terminal of the inductor. The switching circuit controls the high-side switch and the low-side switch according to a comparing signal from an output terminal of the comparator.

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