US 2025/0028007 A1 · DETECTION CIRCUIT FOR POWER LOAD AND METHOD FOR DETECTION THEREOF

Abstract

The present application relates to a detection circuit for power load and a method for detection thereof. The detection circuit comprises a sensing circuit and a signal generation circuit. The signal generation circuit includes a calibration circuit. The sensing circuit senses an output power signal of a power supply unit for obtaining a sensing impedance. Thereby, a corresponding power sensing signal is generated according to the sensing impedance and the output power signal. The signal generation circuit generates a power ratio signal. The calibration circuit generates a calibrating signal according to the power ratio signal for driving the signal generation circuit to perform feedback control for generating the power ratio signal. The power ratio signal will match the load condition and be applied to provide the output power signal with less error.

Claims13

Dependent claims

A detection circuit for power load, comprising:

a sensing circuit, coupled to a power supply, including a plurality of impedance devices, detecting an output power signal of the power supply, obtaining a sensing impedance from one of the impedance devices corresponding to the output power signal, and generating a power sensing signal according to the sensing impedance and the output power signal;
and
a signal generation circuit, coupled to the sensing circuit, including a calibration circuit, generating a power ratio signal according to the power sensing signal, and the calibration circuit generating a calibrating signal according to the power ratio signal and feeding the calibrating signal to the signal generation circuit for driving the signal generation circuit further generating the power ratio signal according to the calibrating signal;
where the power ratio signal is applied to control an output power of the power supply.

1 more element

A method for detection of a detection circuit for power load, comprising steps of:

sensing an output power signal of a power supply by a sensing circuit and obtaining a sensing impedance from one of a plurality of impedance devices corresponding to the output power signal, for generating a power sensing signal;
a signal generation circuit generating a power ratio signal according to the power sensing signal;
and
a calibration circuit generating a calibrating signal based on the power ratio signal for driving the signal generation circuit to perform a feedback control and generate the power ratio signal;
where the power ratio signal is applied to control an output power of the power supply.

2 more elements

Dependencies are inferred from the claim text.

Detection circuit for power load and method for detection thereof

Life of this patent

Detection circuit for power load and method for detection thereof

Life of this patent

Abstract

Claims13