DRIVER FOR LOW POWER THERMOELECTRIC SENSOR TEMPERATURE STABILISING COOLER

Barton Zdenek, Vrba Radimir

Abstract

A new thermoelectric cooling system (TEC) was developed based on the Peltier. The driver drives the TEC (a Peltier element) to keep the temperature of the device under test (a laser diode) at a constant value. A NTC thermistor (placed in close contact to a device under test) measures the temperature. The Peltier driver consists of an input resistance bridge, an error amplifier, a PI regulator and a driver. The long time stability and the temperature stability of the Peltier driver itself are excellent. The Peltier driver can be implemented on-chip, too. Only a few external components should be necessary to use. Also a digital setting of the temperature can be implemented easily.

Keywords

thermoelectric cooler, TEC, Peltier element, Peltier driver, PI regulators, Steinhart-Hart equation

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IMEKO-TC4-2001-066.pdf

DOI

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IMEKO TC

TC4 - Measurement of Electrical Quantities

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