Temperature control circuit and chip protection circuit

By dynamically adjusting the resistance values ​​of the sampling resistor and the feedback resistor, stable temperature control is achieved in low-temperature environments, solving the problem of poor reliability and flexibility of traditional circuits at low temperatures, and improving the stability and flexibility of the circuit.

CN224436824UActive Publication Date: 2026-06-30ZHONGKETSI INFORMATION TECH (BEIJING) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
ZHONGKETSI INFORMATION TECH (BEIJING) CO LTD
Filing Date
2025-08-06
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Traditional temperature control circuits cannot operate stably in low-temperature environments, causing chips to malfunction. Furthermore, the temperature fluctuates greatly during the heating process, resulting in poor circuit reliability and flexibility.

Method used

It employs a temperature sampling module, a voltage regulation module, a temperature detection module, and a heating control module. By adjusting the resistance values ​​of the sampling resistor and the feedback resistor, the temperature threshold is dynamically adjusted to achieve flexible temperature control. Furthermore, the hysteresis effect prevents the temperature detection signal from frequently switching.

Benefits of technology

This improves the reliability and flexibility of the temperature control circuit, avoids frequent switching of the temperature detection signal, and enhances stability.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

This disclosure provides a temperature control circuit and a chip protection circuit, including a temperature sampling module, a voltage regulation module, a temperature detection module, a heating control module, and a heating module. The temperature sampling module adjusts the resistance value of a sampling resistor unit and samples the ambient temperature based on the sampling resistor unit to obtain a temperature sampling voltage. The voltage regulation module adjusts the resistance value of a feedback resistor unit to regulate the internal power supply voltage. The temperature detection module adjusts the hysteresis voltage based on the internal power supply voltage to regulate the upper limit temperature threshold voltage. When the temperature sampling voltage rises to a level greater than or equal to the upper limit temperature threshold voltage, the temperature detection signal is determined to be a first level. When the temperature sampling voltage drops to a level less than or equal to the lower limit temperature threshold voltage, the temperature detection signal is determined to be a second level. The heating control module controls whether the heating module operates according to the temperature detection signal, which can improve the reliability and flexibility of the circuit.
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