A power supply circuit, a power supply method, and a terminal device

By dynamically switching between direct power supply circuits and buck-boost power supply circuits in terminal devices, and selecting the appropriate power supply path based on parameters such as power supply capacity, power consumption type, and network signal, the instability of the host system caused by the length of the power supply path in terminal devices is solved, achieving a balance between stability and power utilization.

CN117724597BActive Publication Date: 2026-06-30HISCENE INFORMATION TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HISCENE INFORMATION TECH CO LTD
Filing Date
2023-12-05
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In terminal devices, voltage loss caused by the extended power supply path distance can lead to instability or even power failure of the host system, especially when high-power applications are started.

Method used

A dynamic switching mechanism between direct power supply circuit and step-up/step-down power supply circuit is adopted. By detecting parameters such as power supply capacity, power consumption type, network signal strength and host system voltage and current, the appropriate power supply path is dynamically selected to ensure stability and power utilization.

Benefits of technology

It achieves a balance between host system stability and power utilization during the startup of high-power applications, reduces power supply path impedance, and alleviates the heat generation problem of terminal devices.

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Abstract

This invention discloses a power supply circuit, power supply method, and terminal device, including a host system, a power supply, a direct power supply circuit, and a buck-boost power supply circuit. The host system is used to determine a target power supply circuit from the direct power supply circuit and the buck-boost power supply circuit based on first data determined by the power supply, an application program responding to an application launch command, a driver layer program in the host system, and / or network signals, and second data from the host system, so as to connect the power supply and the host system through the target power supply circuit. The power supply circuit provided by this invention can ensure the stability of the host system during operation while also considering power utilization.
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