FEATURES

? High Efficiency: ≥90

? Maximum Output Current: 2.5A

? Actual Object Temperature Monitoring

? High Stability: 0.01°C

? High Reliability and Zero EMI

? Compact Size

? 100 lead (Pb)-free and RoHS compliant

DESCRIPTION

The TECA1-xV-xV-D is an electronic module designed for

driving TECs (Thermo-Electric Coolers) with high stability

in regulating an object’s temperature, high energy efficiency,

zero EMIs, and small package. Figure 1 is the photo of an

actual TECA1-xV-xV-D TEC controller.

This module provides interface ports for users to set the

desired object’s temperature, i.e. set-point temperature; the

maximum output voltage across TEC; and the compensation

network. The compensation network makes automatic

adjustments for any deficiencies to achieve and maintain

high order thermal load and thus stabilizes temperature

control loop.

It provides these functions: thermistor T-R curve

linearization, temperature measurement and monitoring,

temperature control loop status indication, TEC voltage

monitoring, power up delay, and shut down.

The TECA1-xV-xV-D comes with a high stability low noise

3.0V voltage reference, which can be used for setting the

desired object’s temperature by using a POT (Potentiometer)

or a DAC (Digital to Analog Converter). When using this

reference for setting the set-point temperature, the set-point

temperature error is independent of this reference voltage.

This is because internal temperature measurement network

also uses this voltage as the reference, the errors in setting

the temperature and measuring the temperature cancel with

each other, setting the object’s temperature with higher

stability. This reference can also be utilized by an ADC

(Analog to Digital Converter), for the same reason, the

measurement error will also be independent of the reference

voltage, resulting in a more accurate measurement. Figure 2

is the real size top view of the controller showing the pin

names and locations. The functions of all the pins are shown

in Table 1.