充电控制电路、充电芯片及电源装置

By introducing a coordinated switching mechanism between the current loop and the voltage loop in the charging control circuit, the problems of unevenness and short pauses in the switching process of traditional boost charging chips are solved, and a stable transition of charging current is achieved.

CN122001065BActive Publication Date: 2026-07-17SHENZHEN LOWPOWER SEMICON CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHENZHEN LOWPOWER SEMICON CO LTD
Filing Date
2026-04-08
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional boost charging chips suffer from problems such as uneven charging process and short pauses during the switching from linear low-current slow charging to switching high-current fast charging.

Method used

A charging control circuit is adopted, including a first switch module, a second switch module, a control module, a current loop module, and a voltage loop module. The control module coordinates the switching of the current loop and the voltage loop to ensure a stable transition of the charging current and avoid runaway current or spikes during loop switching.

Benefits of technology

It achieves a smooth switching from linear low-current slow charging to switching high-current fast charging, avoiding short pauses during the charging process and ensuring the stability and continuity of the charging current.

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Abstract

本申请属于电子电路领域,提供了一种充电控制电路、充电芯片及电源装置。电路包括第一开关模块、第二开关模块、控制模块、电流环路模块和电压环路模块,控制模块分别与电流环路模块、电压环路模块、第一开关模块和第二开关模块连接,第一开关模块分别与电流环路模块、电压环路模块、升压驱动模块和充电功率管的栅极连接,第二开关模块分别与充电电路中的输出节点和充电功率管的栅极连接。本申请在电池电压大于或等于快充阈值时,切换电流环路模块的电流参考值,使充电电流从慢充电流开始以稳定的速度持续上升。当充电电流上升至略小于快充电流时,充电功率管的导通程度也逼近完全导通,此时再进行环路切换不会产生失控电流或者幅度过大的尖峰。
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