High Efficiency TEC/Peltier Controllers and Their Associated Components

How and Why Our TEC Controller Has the Highest Efficiency on the Market

We have been developing TEC controllers for > 20 years and accumulated many innovative design, among them, the most critical invention is our unique design of the output driving stage which uses only 1 PWM engine, as opposed to 2 PWM engines by all others designs. This specially design was awarded to a US patent in 2001, the patent number is US 6486643 B2, here is pdf file for the patent.

US Patent US 6486643 B2

TEC (Thermo-Electric Cooler, or Peltier Cooler) is a semiconductor device which can cool down or heat up the temperature of a thermal load depending on the direction of the current going through the two terminals of the TEC. By using a TEC controller, the thermal load temperature can be regulated precisely by controlling the direction and magnitude of the current going through the TEC.

We have a variety of TEC controllers.

TECA1-xV-xV-D series TEC controllers feature high efficiency, high stability, high reliability and compact sizes. The maximum current is 2.5A. They are often used for controlling temperature in laser systems.

TECA1-xV-xV-DAH series TEC controllers have higher accuracy than TECA1-xV-xV-D series TEC controllers.

TEC5V4A-D is almost the same TEC controller as the above TECA1-xV-xV-D TEC/Peltier controller, except that the maximum output current is 4A, as opposed to the 2.5A.

TEC5V6A-D TEC controller has the same pin out as the above 2 TEC controllers.

Many of these TEC controllers work well with our TEC Modules, Thermistors and Thermally Conductive Epoxy.

Selection Guide for TEC Controllers

Price List For TEC Controllers

RoHS Certificate of Compliance for TEC Controllers

Design Notes Related to TEC Controllers

How does a TEC Controller work - See our videos

Frequently Asked Questions and Answers

TECA1-XV-XV-D

Efficiency: 90%

Max. Output Current: 2.5A

Max. Output Voltage: externally adjustable from 0V to VPS - IOUT x 0.1

Power Supply Voltage: 3.1V to 3.5V or 4.75V to 5.25V (Specify 3.3V or 5V when ordering)

Set-point Temp. Control Voltage: 0V to 3.0V

Package: DIP package

RoHS Compliance: 100% lead-free

Part Number Datasheet With
Pricelist
Stock Status Buy Now
TECA1-5V-5V-D tec controller TECA1-5V-5V-D 46 buy now buy now
TECA1LD-5V-5V-D tec controller TECA1LD-5V-5V-D 41 buy now buy now
TECA1-5V-2.5V-D tec controller TECA1-5V-2.5V-D 340 buy now buy now
TECA1LD-5V-2.5V-D tec controller TECA1LD-5V-2.5V-D 22 buy now buy now
TECA1-3V-3V-D tec controller TECA1-3V-3V-D 12 buy now buy now
TECA1LD-3V-3V-D Laser Drivers ATLS212EV1.0 10 buy now buy now
TECA1LD-3V-3V-S Laser Drivers ATLS212EV1.0 36 buy now buy now

TEC5V4A-D

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

Part Number Datasheet With
Pricelist
Stock Status Buy Now
TECA1-xV-xV-DAH tec controller TECA1-xV-xV-DAH 25 buy now buy now

TEC5V4A-D

Efficiency: 90%

Max. Output Current: 4A

Max. Output Voltage: externally adjustable from 0V to VPS - 0.2V

Power Supply Voltage: 4.75V to 6V (Specify 5V when ordering)

Set-point Temp. Control Voltage: 0V to 3V

Package: DIP package

Complete Shielding: 6 sided metal enclosure

RoHS Compliance: 100% lead-free

Part Number Datasheet With
Pricelist
Stock Status Buy Now
TEC5V4A-D tec controller TEC5V4A-D 59 buy now buy now
TEC5V4A-DA tec controller TECA1LD-5V-5V-D 25 buy now buy now
TEC5V4A-DAH tec controller TECA1-5V-2.5V-D 25 buy now buy now

TEC5V6A-D

Efficiency: 90%

Max. Output Current: 6A

Max. Output Voltage: externally adjustable from 0V to Vps - 0.3V

Power Supply Voltage: 4.75V to 6V

Package: DIP package

Complete Shielding: 6 sided metal enclosure

RoHS Compliance: 100 % lead-free

Part Number Datasheet With
Pricelist
Stock Status Buy Now
TEC5V6A-D tec controller TEC5V6A-D 7 buy now buy now
TEC5V6A-S tec controller TEC5V6A-S 9 buy now buy now
TEC5V6A-DA tec controller TEC5V6A-DA 7 buy now buy now
TEC5V6A-DAH tec controller TEC5V6A-DAH 4 buy now buy now

TEC28V15A

This TEC controller, TEC28V15A, is designed to drive a TEC at high efficiency for regulating the object temperature precisely by controlling the direction and magnitude of the current going through the TEC. It is powered by a DC voltage between 9V to 28V and output current can go up to 15A without using a heat sink.

Part Number Datasheet With
Pricelist
Stock Status Buy Now
TEC28V15A tec controller TEC5V6A-D 0 buy now buy now
TEC28V15AEV1 Datasheet 0 buy now Buy Now

TECEV104

The TEC Controller Evaluation Board TECEV104 is consisted of a complete tunable compensation network and application circuit for using our TECA1 series, TEC5V4A-D series, and TEC5V6A-D series TEC controllers to drive a TEC. It can set the output voltage limit, tune the compensation network, and set the set-point temperature. This evaluation board has an LED for indicating the temperature loop status of the controller, and numerous connection pads for making connections with external components and instruments. It is 100 % lead (Pb)-free and RoHS compliant.

Part Number Datasheet With
Pricelist
Stock Status Buy Now
TECEV104 tec controller TEC5V6A-D 14 buy now buy now
TECEV103 (Not Recommend for New Designs)

TECEV103

This TEC Controller Evaluation Kit TECEV103 can be used for evaluating our TECA1 series TEC controllers conveniently.

TECEV103 has been replaced with TECEV104.

Datasheet for TTV2.1 (OBSOLETE)

Part Number Datasheet With
Pricelist
Stock Status
TECEV103 tec controller TECEV103 0
ATW3A314 (Under Development)

ATW3A314

ATW3A314 is a compact high efficiency electronic module, designed for controlling TECs (Thermo-Electric Coolers) for regulating a target object temperature to be within a pre-set temperature window. The main advantage to use this controller is to save energy for battery powered systems: during most of the operating time, the target is within the preset window, and the TEC controller is not turned on, only occationally, the target temperature falls outside the preset window and the TEC controller is turned on to bring the target temperature back to be within the limits.

Part Number Datasheet With
Pricelist
Stock Status
ATW3A314 tec controller ATW3A314 0
ATEC24V10A-D (Under Development)

ATEC24V10A-D

High Output Voltage: 24V

High Output Current: 10A

High Efficiency: >96%

High Temperature Stability: <0.01C

Programmable Current Limit

Complete Shielding

Compact Size: 38.8 X 34.5 X 7.5 (mm)

DIP and SMT Packages Available

RoHS Compliance: 100 % lead-free

Part Number Datasheet With
Pricelist
Stock Status
ATEC24V10A-D tec controller ATEC24V10A-D 0
Selection Guide for High Current TEC Controllers
Part # Input Voltage
(V)
Maximum
Output Current
(A)
Package Temp Pin @
Shut Down
3 Voltage
Reference @
Shut Down
TEC-5V-4A-D
TEC controller
5 4 DIP Working Working
TEC-5V-4A-DB
TEC controller
5 4 DIP Disabled Working
TEC-5V-4A-S
TEC controller
5 4 SMT Working Working
TEC-5V-4A-SB
TEC controller
5 4 SMT Disabled Working
TEC-5V-6A-D
TEC controller
5 6 DIP Working Working
TEC-5V-6A-DB
TEC controller
5 6 DIP Disabled Working
TEC-5V-6A-S
TEC controller
5 6 SMT Working Working
TEC-5V-6A-SB
TEC controller
5 6 SMT Disabled Working

Frequently Asked Questions and Answers.

1. Q: How Does a TEC Work?
A: TEC stands for “Thermoelectric Cooler” that can produce both heating and cooling based on the Peltier effect. TEC can transport heat form one of its surfaces to another and the heating and cooling direction and the magnitude depends on the direction and magnitude of the electric current that flows through it. A TEC is consisted of two ceramic plates sandwiched with Peltier elements which are connected in serial and terminated with 2 leads. When ADC voltage is applied to the 2 leads, a current is generated and goes through all the Peltier elements, each element generates cold on one end and hot on the other end. All the cold power generated by each element adds up at one of the ceramic plates and all the hot adds up as well at the other plate. Thus, one plate becomes hot and the other plate gets cold.
2. Q: How Does a TEC Controller Work?
A: All the TEC controllers have a temperature sensing circuit. It reads a temperature signal from a temperature sensor which is mounted onto a target object and derives this signal into an analog voltage representing the actual temperature value of the target object. The controller then compare the temperature analog voltage with a pre-set analog voltage which represent a desired set-point temperature. The comparing result, also called error signal, is used for controlling the polarity and magnitude of an H-bridge driving engine to drive a TEC module on which the target object is mounted.
3. Q: What are the critical circuit blocks in a TEC controller?
A: A TEC controller is consisted in these circuit blocks: temperature sensing, error amplification, thermal loop compensation, and output stage, The temperature sensing circuit needs to have high precision, low noise, and high stability. The error applification needs to have high amplification gain and, at the same time, low offset error, and high stability. The compensation network is the most critical block, it needs to match the thermal load precisely and balance the nonlinear controdict effects between heating and cooling. The output stage must have high power capability and high efficiency.
4. Q: What are the specialties of the Analog Technologies' TEC controllers?
A: Analog Technologies, Inc. (ATI), has been in business for 21 years and developing and manufacturing TEC controllers for 18 years. It has a few innovative designs and was rewarded by a few US patents. These designs enables ATI to achieve high stability, high efficiency, small size, and low cost simultaniously.
5. Q: Do ATI's TEC controllers come with SMT versions?
A: Yes, we do provide SMT (Surface Mount Technologies) type packaging, but do not recommend using such a design. This is because SMT decreases the reliability and degrade the thermal dissipation capability.
6. Q: How Long ATI warranties its TEC Controllers?
A: We give 30 days unconditional warranty and 10 years conditional warranty. That is, within 30 days, you can return the TEC controllers or exchange other types, excluding custom designed and made products. Within 10 years after buying the product, ATI gives free replacement units after the customers sending back the old bad units - provided that the controllers have been used properly.
7. Q: What is the Best Way to Fine Tune the Compensation Network?
A: Tuning the compensation network precisely to match the thermal load is critical for achieving high temperature stability and response speed. We recommend using the TEC controller evaluation board to do the tuning which comes with an adjustable compensation network.
8. Q: Why does the actual temperature of the target object fluctate with ambient temperature change or ambient air flow fluctuate?
A: In most cases, this happens when the thermal compensation network does not match the characteristics of the thermal load well. Fine tuning the compensation network will solve the problem.
9. Q: Why my system takes too long a time to reach the set-point temperature?
A: There are 2 possible reasons: A. The TEC does not have too much thermal power thus it takes long to reach the set-point temperature. When this is the case, the TEC controller drives the TEC at its maximum full cooling or heating voltage, i.e., you will see a straight line when measuring the voltage across the TEC. B. The thermal compensation network does not match the characteristics of the thermal load. When this happens, the voltage across the TEC appears to be oscillating, the voltage value goes up and down, the the palarity toggels back and forth.
10. Q: What are the specialties of of ATI's TEC controllers?
A: ATI's TEC controllers utilizes a patented H-bridge which uses low component count and consumes less power, the result is: high efficiency, smaller size, and low cost thus low price. In addition, ATI's controllers are completely potted at a vaccum chamber, to ensure consistant thermal conduction from inside out, and is ready for space applications. The grounded metal case blocks EMI from getting in and out of the TEC controllers.
11. Q: Are ATI's TEC controllers shielded?
A: Yes, they are completely shielded by gold coated metal housing, it prevents the EMI from coming out the controllers and, at the same time, it also blocks outside EMI's from going into the controllers to interfere the internal electronics.
12. Q: How the TEC controller temperature range is determined?
A: The TEC controller, TEC-A1-xV-xV, has an internal temperature network which reads the resistance of a standard 10k thermistor, convert the resistance into an output voltage on the TEMP pin which is proportional to the temperature of the thermistor. The networt convert the temperature into the voltage in such a way that when the temperature is 15C, the TEMP voltage is 0V; when the temperature is 35C, the TEMP voltage is 3V.

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