高精度欠压保护电路
By designing a high-precision undervoltage protection circuit and using a power-on reset circuit to control the state and isolate the output voltage, the problem of unstable output state during the power-on reset process of the undervoltage protection circuit is solved, improving the reliability and accuracy of the circuit and reducing interference from digital circuit noise.
CN115864305BActive Publication Date: 2026-07-17WUXI INNOSYS TECH CO LTD +1
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- WUXI INNOSYS TECH CO LTD
- Filing Date
- 2022-12-06
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Existing high-voltage integrated circuits have insufficient protection output status during power-on reset and are susceptible to noise interference from digital circuits, affecting reliability and accuracy.
Method used
It adopts a high-precision undervoltage protection circuit design, including a circuit structure composed of specific tubes and resistors. The state is controlled by a power-on reset circuit, and the undervoltage protection output voltage is isolated from the power supply to avoid interference from digital circuit noise.
Benefits of technology
The reliability and accuracy of the undervoltage protection circuit have been improved, ensuring the stability of the protection output state during power-on reset and reducing the impact of digital circuit noise.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115864305B_ABST
Abstract
本发明公开了一种高精度欠压保护电路结构。所提供的高精度欠压保护电路，本发明的针对上电复位过程欠压保护输出状态进行了保护，采用上电复位电路控制整体欠压保护电路的状态；另外欠压保护输出电压采用专用电源VDD2，与欠压保护电路的电源VDD1隔离开，避免数字电路噪声对欠压保护电路的干扰；提高了欠压保护电路的可靠性和精度，可以广泛应用于各类高压集成电路及应用系统。
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