TEC driver reference design for 3.3V inputs


Design files


Many electronic components require their temperature to be regulated for best performance and for longer operating life times. Precise temperature control down to 0.1°C is critical for certain applications such as laser diodes used in optical modules, where even a 1°C change in temperature can cause a drift of 0.1 nm in the wavelength of the laser.

Thermoelectric cooling (TEC) devices using the Peltier effect can be used for controlling the temperature in these applications. The direction of current flowing through the TEC determines if it is being heated or cooled. This design guide shows how to implement a TEC driver using TI’s low quiescent current (11 µA) buck-boost converter (TPS63802) in combination with a microcontroller (MSP430FR2433) to precisely regulate the temperature of sensitive devices.

  • Low solution costs
  • Power stage (TPS63802) with small solution size
    (< 30 mm²)
  • Power Stage (TPS63802) with low quiescent current
    (11 μA)
  • Digital PI control
  • Precise temperature control <0.1°C
Communications equipment

A fully assembled board has been developed for testing and performance validation only, and is not available for sale.

Design files & products

Design files

Download ready-to-use system files to speed your design process.


Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Detailed overview of design layout for component placement


Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

Buck-boost, inverting & split-rail converters (integrated switch)

TPS638022-A, high-efficient, 11-µA quiescent current buck-boost converter in QFN/DFN package

Data sheet: PDF | HTML
Buck-boost, inverting & split-rail converters (integrated switch)

TPS638052-A, high-efficient, 11-µA quiescent current buck-boost converter with tiny solution size

Data sheet: PDF | HTML
MSP430 microcontrollers

MSP430FR243316 MHz MCU with 16KB FRAM, 4KB SRAM, 10-bit ADC, UART/SPI/I2C, timer

Data sheet: PDF | HTML
Shunt voltage references

LM4041DAdjustable, precision micropower shunt voltage reference with 1% accuracy

Data sheet: PDF

Start development


Support software

TIDA-050017 TEC Driver Software Example — TIDCFU0.ZIP (603 K)

Technical documentation

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Type Title Date
* Design guide TEC Driver Reference Design for 3.3-V Inputs (Rev. A) Aug. 06, 2021

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