US 12,191,778 B2 · Power converter and operation method thereof

Abstract

A power converter and an operation method of the power converter are provided. The power converter includes a rectifier, a boost circuit, a current sensor, and a processor. The rectifier rectifies an AC power to generate a rectified power. The boost circuit includes a boost inductor. The boost circuit boosts the rectified power to generate an output power. The current sensor senses an inductor current value at the boost inductor to generate a sensed value corresponding to the inductor current value. The processor generates a first reference value according to an output voltage value of the output power, an input impedance value, and a first value. When the sensed value is greater than the first reference value, the processor enters a first operation mode to cause the sensed value to be not less than the first reference value.

Claims17

Dependent claims

A power converter, comprising:

a rectifier, configured to rectify an AC power at an input end to generate a rectified power;
a boost circuit, comprising a boost inductor and being configured to boost the rectified power to generate an output power;
a current sensor, configured to sense an inductor current value at the boost inductor to generate a sensed value corresponding to the inductor current value;
and
a processor, coupled to the rectifier, the boost circuit, and the current sensor and configured to receive an input impedance value of the input end and an output voltage value of the output power, generate a first reference value according to the output voltage value, the input impedance value, and a first value, and enter a first operation mode when the sensed value is greater than the first reference value,
wherein, in the first operation mode, the processor controls the boost circuit to cause the sensed value to be not less than the first reference value.

3 more elements

An operation method adapted for a power converter, wherein the power converter comprises a rectifier and a boost circuit, the rectifier is configured to rectify an AC power at an input end to generate a rectified power, the boost circuit comprises a boost inductor, the boost circuit is configured to boost the rectified power to generate an output power, and the operation method comprises:

sensing an inductor current value at the boost inductor to generate a sensed value corresponding to the inductor current value;
receiving an input impedance value of the input end and an output voltage value of the output power, and generating a first reference value according to the output voltage value, the input impedance value, and a first value;
and
when the sensed value is greater than the first reference value, entering a first operation mode to control the boost circuit to cause the sensed value to be not less than the first reference value.

1 more element

Dependencies are inferred from the claim text.

Power converter and operation method thereof

Life of this patent

Power converter and operation method thereof

Life of this patent

Abstract

Claims17