FEATURES
 High Efficiency: ≥90%
 Maximum Output Current: 4A
 Maximum Output Voltage: ±VVPS
 Actual Object Temperature Monitoring
 High Stability: 0.01°C
 High Precision
 High Reliability
 Zero EMI
 Compact Size
 100 % lead (Pb)-free and RoHS compliant

DESCRIPTION
The TEC5V4A-D 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
TEC5V4A-D.
The module provides interface components for users to
configure desired object temperature range, i.e. set-point
temperature range; maximum voltage across TEC, i.e.
maximum TEC voltage; 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 TEC5V4A-D 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.