As a bridge between the car battery and electronic devices, car charger takes on the task of powering various electronic products. The car will heat up during operation, and the car charger will also generate heat when it is working, so how to effectively control the working temperature of the car charger through the NTC thermistor to ensure that it can work normally in complex environments has become an important technical challenge.

The NTC thermistor works with components such as the car charger MCU to track the temperature changes of the charger in real time and prevent the charger from failing or even exploding due to overheating. As a safety guard of the operating temperature of the car charger, how does the NTC thermistor work?

First, the NTC thermistor is installed at the input of the car charger for temperature monitoring, and when the temperature changes, the resistance value of the thermistor changes accordingly. The NTC then transmits the data via the ADC to a temperature limiting module, which monitors the change in the resistance value of the NTC thermistor to determine the temperature status of the car charger. Therefore, when the operating temperature of the car charger rises and exceeds the set threshold, the NTC thermistor resistance value decreases and the temperature limit module sends a command to the control module. The control module reacts immediately to stop the work of the car charger or adjust the load power to prevent the charger from overheating.

In summary, the cooperation between NTC and other components can realize the real-time monitoring of the operating temperature of the car charger and protect the internal circuit. Due to the limitation of the internal installation position of the car charger, EXSENSE Electronics Technology Co., Ltd. recommends the use of our CT series SMD type NTC thermistor. Compared to leaded thermistors, SMD type NTC can better meet the compact assembly space of the car charger, freeing up more mounting space for other components. The high accuracy of SMD type thermistor can also help the car charger improve the accuracy of temperature monitoring and control to ensure its safety. Therefore, with the assistance of SMD type NTC thermistor, the car charger can not only maintain efficient charging capacity, but also maintain safe and stable operation in the changing automotive operating environment.