Overview
Description
This is a reference design of a thermoelectric Peltier controller using a 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, offering fast, high-precision temperature control, simple switching between heating and cooling, and compact, silent operation with no moving parts. 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. Testing demonstrated a significant improvement in responsiveness, reducing the time to reach 63.2% of the target temperature from 24.9 seconds to 3.18 seconds, while achieving temperature control with 5m°C resolution or better.
Features
- RX23E-A MCU with integrated analog front end (AFE)
- High-accuracy temperature measurement and control on a single chip
- Eliminates the need for an external AFE, reducing Nill of Materials (BOM) cost and board space
- 24-bit ΔΣ ADC with excitation current source for 3-wire RTD measurement
- 12-bit SAR ADC for current sensing
- RXv2 core for PID control processing
- Cascade current and temperature control for improved response and stability
- Complementary PWM output for efficient power control
- Equipped with various power devices:
- Half-bridge Driver ISL2111ABZ
- DC/DC converter ISL8560IRZ
- Power MOSFET RJK0654DPB
Applications
Design & Development
Videos & Training
Renesas shows a Peltier cooler control demonstration using the high-performance, 32-bit RX23E-A Group microcontrollers.
Support
Support Communities
- RX23E-A Data Flash
Where should I find a well documented sample for Data Flash use on the RX23E-A Family? I find some sample codes, but... those are not valid or they have a lot of lakes. For example, this one of the source sample code that I found, but.... static void testmain ...
Apr 20, 2022 - Boot Swap / Dual Mode
I am using RX23E-A Part no-R5F523E6ADFL , I could not find Boot swap concept for it or is there a same concept with different name ? [locked by: Sai (SWF) at 14:01 (GMT 0) on 10 Jun 2022]
Apr 20, 2022 - rx i2c slave demo
Hi I need a demo for an RX I2C slave. I've tested multiple RX MCUs of different models, and the result is the same — the logic analyzer shows that the slave doesn't acknowledge the address. I'm using RX driver version 1.49. I understand that address acknowledgment ...
Aug 19, 2026
Support Communities
