Switching power supply circuit, control method thereof, chip and electronic device

By combining the error amplification module, amplitude control module, and frequency control module, the slow response speed and stability problems of switching power supply circuits under load changes are solved, achieving efficient and stable power output and load adaptability, simplifying circuit design and reducing costs.

CN122348673APending Publication Date: 2026-07-07CHENGDU HUICHUANG XINYAO SEMICONDUCTOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHENGDU HUICHUANG XINYAO SEMICONDUCTOR CO LTD
Filing Date
2025-01-07
Publication Date
2026-07-07

AI Technical Summary

Technical Problem

Existing switching power supply circuits suffer from problems such as complex system structure, uneven switching, slow response speed, and limited power consumption control when the load changes. They are particularly difficult to achieve fast response and stable output under light and heavy loads.

Method used

By employing an error amplification module, an amplitude control module, and a frequency control module, the peak current and switching frequency are simultaneously adjusted through an error signal to adapt to load changes, simplifying circuit design and improving load adaptability.

Benefits of technology

It achieves fast response and stability of power output, reduces circuit design complexity and cost, improves power efficiency and load adaptability, and reduces electromagnetic interference and unnecessary switching losses.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to a switching power supply circuit, a control method thereof, a chip and an electronic device. The switching power supply circuit comprises an error amplification module, an amplitude control module and a frequency control module. The amplitude control module is configured to control the peak current value of the output of the switching power supply circuit. The frequency control module is configured to control the switching frequency of the switching power supply circuit. The error amplification module is connected with the amplitude control module and the frequency control module, can sample an electrical signal representing the size of the load connected to the switching power supply circuit, and can adjust the peak current value of the output of the switching power supply circuit and the switching frequency of the switching power supply circuit by controlling the frequency control module and the amplitude control module based on the electrical signal. The amplitude and frequency of the switching power supply circuit are adjusted by a single signal source, so that efficient, stable power supply output and better load adaptability are realized.
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