电源门控电路、系统、芯片及电子设备

By designing a power gating circuit that includes pull-up, current source, output voltage detection, and pull-down modules, the problem of the inability to adjust the turn-on time in existing technologies is solved, enabling flexible and precise control of the power gating circuit in different environments and ensuring circuit stability.

CN116781054BActive Publication Date: 2026-07-17ZHUHAI JIELI TECH

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHUHAI JIELI TECH
Filing Date
2022-09-21
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The opening time of existing power supply gating circuits cannot be adaptively adjusted, resulting in an inability to flexibly control the slow rise of the supply voltage under different load circuits and power supply voltage environments, which affects circuit stability.

Method used

A power supply gating circuit was designed, comprising a pull-up module, a current source module, an output voltage detection module, a feedback module, and a pull-down module. By detecting the output voltage at the power supply terminal and responding to external adjustment signals to change the power supply voltage threshold, the turn-on time can be flexibly adjusted.

Benefits of technology

The power gating circuit enables flexible and precise adjustment of the turn-on time, adapting to different load circuits and power supply voltage environments, ensuring circuit stability and a wider range of applications.

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Abstract

一种电源门控电路、系统、芯片及电子设备,在该电源门控电路中,在接收到上电信号之后,电流源模块先通过充电电流向门控功率P管的栅极充电,以缓慢拉低门控功率P管的栅极电压,使得供电端A的电压逐渐上升;当供电端A的电压上升至供电电压阈值时,输出电压检测模块向反馈模块输出反馈触发信号,以使反馈模块向下拉电路输出下拉触发信号,从而下拉模块将门控功率P管的栅极电压下拉到地,以使门控功率P管完全导通,此时电源门控电路完全开启。由于电压阈值调整子模块在接收到调整信号后,会响应于该调整信号而改变供电电压阈值,从而也就可改变开启时间。
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