TEC (Thermoelectric Cooler) is a temperature-controlled semiconductor cooler which is widely used in optical, aerospace, medical and other fields. Regardless of the application, the temperature stability and control characteristics of the TEC rely on NTC thermistor chip to maximize its heating/cooling performance.
Specifically, the NTC thermistor chip is placed on the TEC to monitor the operating temperature of the TEC in real time. The NTC thermistor chip that acts as a temperature acquisition module is configured as a voltage divider with the characteristic of negative proportional change of resistance value to temperature, and the collected TEC temperature data can be converted into voltage with the assistance of a negative feedback control circuit. TEC, on the other hand, compares the obtained voltage information with a set reference voltage, and then adjusts the amount of heat that it must convert by controlling the current flowing through it.
Since the application scenarios of TEC have extremely high temperature requirements (such as optical transceiver, laboratory instrument, thermal management system, etc.), if there is an error in temperature acquisition, it will not be corrected after feedback to the information processing system, and eventually the equipment will be damaged. Therefore, TEC accurately senses the temperature through the NTC thermistor chip during the working process, which plays an indispensable role in minimizing the temperature error. The mounting position of the thermistor chip is also very important, and it must be ensured that it is attached to the TEC in order to quickly read the real-time operating temperature.
Considering the accuracy of temperature monitoring, TEC manufacturers generally choose NTC thermistor chip developed and produced by EXSENSE Electronics Technology Co., Ltd., which high accuracy can help TEC adjust the temperature more accurately. The dimension of NTC thermistor chip is small (which can be customized according to customer's specific application), which can be well adapted to the installation position of TEC. And the fast response of NTC thermistor chip can effectively improve the work efficiency of TEC.