短路保护电路、短路保护方法、电源电路及芯片
By introducing soft-start and reset circuits into the power supply circuit, the rise rate of the output voltage is limited, the problem of peak current when the circuit output is short-circuited is solved, and the stability and safety of the circuit are improved.
CN115377943BActive Publication Date: 2026-07-173PEAK INC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 3PEAK INC
- Filing Date
- 2022-09-19
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing circuits cannot effectively limit the rate of increase of the output voltage when the output is short-circuited, resulting in peak current that damages equipment or electronic components.
Method used
A soft-start circuit and a reset circuit are used. When a short circuit occurs in the power supply circuit, the short-circuit output voltage is received and a reset voltage is provided to control the slope change of the start-up voltage and limit the rise rate of the output voltage.
Benefits of technology
It effectively reduces the peak current output of the power supply circuit, improving the stability and safety of the circuit under short-circuit conditions.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115377943B_ABST
Abstract
本发明公开了一种短路保护电路、短路保护方法、电源电路及芯片，应用于电源电路，短路保护电路包括：软启动电路以及重置电路，软启动电路用于给电源电路的启动输入端提供一启动电压，电源电路的工作输入端用于接收参考电压，在电源电路的启动阶段，启动电压沿第一斜率变化；重置电路的输入端与电源电路的输出端相连，重置电路的输出端与电源电路的启动输入端相连。本发明的短路保护电路，通过重置电路在电源电路发生输出短路时接收电源电路的短路输出电压，并给启动输入端提供重置电压，软启动电路基于重置电压将启动电压进行重置，在短路结束时，重置后的启动电压沿第二斜率变化从而限制电源电路的输出电压的上升速度，减小电源电路输出尖峰电流。
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