一种具有过压保护功能的高压启动供电电路

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邓棵（ 1996-） ，女，硕士，研究方向为模块电源设计。

关键词：高压开关电源系统；效率；高压应力；线性稳压；动态滞环；启动供电中图分类号：TM851 文献标志码：A 文章编号：2095-8188（2026）01-0058-08DOI：10.16628/j.cnki.2095-8188.2026.01.008

A High-Voltage Start-Up Power Supply Circuit with Overvoltage Protection

DENG Ke， ZHAO Gang （ s Group ， ，）

Abstract：To addressthe limitations conventional start-up power supply solutions （suchas shunt-regulated circuits and linear-regulated circuits）in high-voltage switching power supply systems，whichareplagued by low efciency and sustained high-voltage stresson power devices，a novel high-voltage start-up power supply circuit is proposedby sorting out existing technical botlenecks and comparing theadvantages anddisadvantages mainstream solutionsinthe field.Enhanced efficiencyand reliabilityare achieved byadopting three key improvements in the proposed circuit：a two-stage power supply mechanism combining a linear regulator and an auxiliarypower supply，dynamichysteresis control basedonanoperational amplifieranda voltage divider network， andan integrated overvoltage protection unit.Aprototype circuit isfabricated based on SIMetrix simulation data. Experimental results indicate that the efficiency the prototype circuit is increased from 30%～40% the conventional scheme to 72% .rationality and feasibility the proposed scheme are verified byboth simulation validation and prototype circuit tests.

Keywords：high-voltage switching power supply system；efficiency；high-voltage stress；linear regulator;dynamic hysteresis; start-up power supply

0 引言

近年来，随着电力电子系统的飞速发展，电源管理系统已广泛应用于航空、通信、家电、工业、国防等领域。（剩余8289字）