FEATURES

? High Efficiency: ≥90

? Maximum Output Current: 2.5A

? Actual Object Temperature Monitoring

? High Stability: 0.004?C

? High Reliability and Zero EMI

? Compact Size

? 100 lead (Pb)-free and RoHS compliant

DESCRIPTION

The TECA1-xV-xV-DAH is an electronic module designed

for driving TECs (Thermo-Electric Coolers) with high

stability in regulating the object temperature, high energy

efficiency, zero EMI, and small package. Figure 1 is the

photo of an actual TECA1-xV-xV-DAH TEC controller.

This module provides interface ports for users to set the

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

maximum output voltage across TEC; and the compensation

network. The compensation network compensates the high

order thermal load and thus stabilizes the 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-DAH comes with a high stability low

noise 3.0V voltage reference which can be used for setting

the desired object 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 the 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 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.