5V, Low-Power TEC Driver Reference Design
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Key Document


This reference design details a power management circuit that is capable of sourcing and sinking current for driving a thermoelectric cooler (TEC) to control the temperature of sensitive devices, like laser diodes or sensors. It supports a small solution based on the integrated TPS63070 buck-boost converter, requiring only a few external components. With a simple high impedance analog voltage input to control the current flowing through the TEC, the converter can be used as a power solution for a microcontroller based temperature control system.

  • Source and sink current capabilities to drive a TEC
  • Positive and negative current limit
  • Up to 2-A continuous TEC current
  • 5-V input voltage
  • Single device solution

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Schematic/Block Diagram

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Design Files

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(Output Voltage 1)
(Output Voltage 2)
Vin (Min) (V)55
Vin (Max) (V)55
Vout (Nom) (V)2.57.5
Iout (Max) (A)11
Output Power (W)2.57.5
Input TypeDCDC
TopologyBuck Boost- Integrated SwitchBuck Boost- Integrated Switch

TI Devices (1)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
TPS63070  Wide input voltage (2V-16V) buck-boost converter  Buck-boost & inverting regulators  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
TPS63070 Download Download

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Technical documentation

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User guide (1)
Title Type Size (KB) Date
PDF 111 06 Sep 2016
Design files (6)
Title Type Size (KB) Date
ZIP 367 01 Sep 2016
ZIP 357 01 Sep 2016
PDF 174 01 Sep 2016
PDF 132 01 Sep 2016
PDF 69 01 Sep 2016
PDF 198 01 Sep 2016

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