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Linear TEC (Thermo Electric Cooler) Driver (DS80C320)

2017-03-03 19:08  
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This article describes the Linear TEC (Thermo Electric Cooler) Driver (DS80C320). The content is very simple, very helpful. Components in this article can help you understand better understanding of this article. For example, in this article, you can go to find and buy these components:DS80C320.

Thermoelectric cooler (TEC) or Peltier cooler is becoming popular because of its robustness and maintenance free characteristic. Here is one example of a linear thermoelectric cooler (TEC) driver circuit. This driver? is capable of delivering ±2A into a TEC. This circuit operates on a single 5V supply and drives the TEC in the most preferred “constant-current” mode. Here is the schematic diagram of the circuit:

thermo electric cooler driver circuit schematic

This TEC driver amplifier is a voltage-controlled current source. Constant current drive eliminates the effect of thermal “back? EMF” on current through the TEC under dynamic temperature control conditions. Constant-current drive also assures that TEC drive current is independent of production variations in TEC junctions or long-term aging.

 


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