VOLTAGE CONVERTER AND VOLTAGE CONVERTING METHOD

摘要

A voltage converter includes a voltage conversion circuit, a pulse width modulation (PWM) signal generating module, a feedback controlling module, and a subtractor. The voltage conversion circuit is configured to convert an input voltage to an output voltage according to a PWM signal. The PWM signal generating module is configured to generate the PWM signal according to a control signal. The feedback controlling module is configured to generate the control signal according to a feedback signal. The subtractor is configured to subtract a first reference voltage by the output voltage, to generate the feedback signal. The phase of an AC component of the first reference voltage is substantially opposite to the phase of the input voltage.

主权项

1. A voltage converter comprising:
a voltage conversion circuit configured to receive a pulse width modulation signal and convert an input voltage to an output voltage according to the pulse width modulation signal; a pulse width modulation signal generating module coupled to the voltage conversion circuit, wherein the pulse width modulation signal generating module is configured to receive a control signal and generate the pulse width modulation signal according to the control signal; a feedback controlling module coupled to the pulse width modulation signal, wherein the feedback controlling module is configured to receive a feedback signal and generate the control signal according to the feedback signal; and a subtractor coupled to the voltage conversion circuit and the feedback controlling module, wherein the subtractor is configured to receive a first reference signal and the output voltage, and subtract the first reference voltage by the output voltage to generate the feedback signal, wherein a phase of an AC component of the first reference voltage is substantially opposite to a phase of the input voltage.