This is a reference design of a thermoelectric Peltier controller using an high-precision AFE-mounted MCU, RX23E-A. It is capable of realizing measurement, calculation and the control necessary to perform temperature control with a single RX23E-A chip,
The Thermoelectric Peltier Controller (TEC) is a temperature controller for heating and cooling that utilizes a phenomenon called the Peltier effect. The TEC is widely used in consumer and industrial applications for temperature and has following features.
This reference design consists of the application note describing a control design, hardware design and software design, and the sample program. By using this reference design, you can easily try temperature control using RX23E-A.
We have test-manufactured a demo unit and evaluated response characteristics and control resolution. The temperature response of the Peltier module with temperature control shortened the time to reach the final value of 63.2% from 24.9 sec to 3.18 sec compared to the response without temperature control, indicating a significant improvement in responsiveness. In addition, it is confirmed that the Peltier Controller can be controlled in a resolution of 5m℃ or less because it responds to changes in command values in steps of 5m℃.
Renesas shows a Peltier cooler control demonstration using the high-performance, 32-bit RX23E-A Group microcontrollers.