ATEC24V10A-D

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Copyrights 2000-2020, Analog Technologies, Inc. All Rights Reserved. Updated on 1/6/2020 www.analogti.com 2 Analog Technologies ATEC24V10A-D High Voltage High Current TEC Controller PIN FUNCTIONS # Name Meaning Type Usage Description Note

1 SYNC Synchronization Digital input

This serves as both synchronization input port and provides synchronization output signal as well.

2 TMPG Temperature good Digital

When the actual target temperature equals to the set-point temperature, this pin is set to logic high. It can be used for driving an LED directly or send it to a microcontroller’s input port.

3 SDN Shut down

negative logic Digital input Sets this pin low will shuts down the whole controller.

4 GND Ground Ground Connect all control signal related ground to

here. 5 2P5V 2.5V Analog output Reference voltage. 6 ILIM Current limit set Analog input Sets the current limit. 7 TMPS Temperature set Analog input Se ts the set-point temperature. 8 RTH Thermistor resistor Analog input Receives temperature sensing signal. See the application section for more detail.

9 TMPO Temperature

This voltage is proportional to the actual target temperature.

10 COMIN Compensation

input Analog input Connects the compensation network central tab to here as shown in Figure 3.

11 ITEC TEC current

output This voltage is proportional to the TEC current.

12 VTEC TEC voltage

output This voltage is proportional to the TEC voltage. TECN TEC negative terminal Power input Tie all these pins together and connect them to the negative terminal of the TEC. 14 TECP TEC positive terminal Power input Tie all these pins together and connect them to the positive terminal of the TEC. 17 PGND Power ground Power ground Tie all these pins together and connect them to the return terminal of the power supply. 20 VPS Power supply voltage Power input Tie all these pins together and connect them to the positive terminal of the power supply. 23

A typical application schematic is shown in Figure 2. *: Values need to be calculated according to set-point temperature range. **: Values need to be tuned with the thermal load. Figure 2. A Typical Stand-alone Application Schematic

Copyrights 2000-2020, Analog Technologies, Inc. All Rights Reserved. Updated on 1/6/2020 www.analogti.com 4 Analog Technologies ATEC24V10A-D High Voltage High Current TEC Controller Turning the Controller On and Off The controller can be turned on and off by setting the SDN pin high and lower respectively. It is recommended to turn the controller on by this sequence: To turn on: turn on the power (by providing the voltage at the VPS pins), then turn on the controller by using the SDN pin. To turn off: turn off the controller by using the SDN pin, then turn off the power. The user can choose not to c ontrol the controller’s SDN pin by leaving it unconnected. There is an internal pull up resistor of 100K, pulling this pin up to an internal 5V power supply. The user can also use an open drain output, or simply use a SPST switch, to pull the SDN pin down for turning off the controller. Setting the Output Current The maximum output current magnitude, for both heating and cooling mode, is set through a DC voltage on the ILIM pin (#6). The input impedance of this pin is >10MOhm. This pin can be set by a potentiometer as shown in Figure 3 or by a DAC. The relationship between the set voltage and the output current limit is: I OUTMAX = VILIM (V)/2.5 (V)*10 (A). When needing the maximum output current to be 10A, simply tying this pin, ILIM, to the reference voltage, 2P5V (#5). Please notice that the operating voltage range for this pin is Setting the Set-point Temperature The same as setting the current limit as described above, the set-point temperature can also be set by using a potentiometer or a DAC. The relationship between the set voltage and the set- point temperature is given in the next paragraph. Setting the Set-point Temperature Range Depending on the applications, usually the target temperature needs to be adjust within certain range. After know this temperature range, the input temperature network can be designed. Based on the temperature sensor utilized for sensing the target temperature, the input temperat ure measurement network must be designed differently. A. Using an NTC Thermistor as the Temperature Sensor The NTC (Negative Temperature Co efficient) thermistor is the most common temperature sensor used in practice for sensing the temperatures. The temperat ure measurement circuit for interfacing with the NTC thermistors is shown in Figure 2. This is the way for calculating the values of the 3 resistors in the network, R1, R2, and R3. B. Using an RTD as the Temperature Sensor C. Using a Silicon IC as the Temperature Sensor D. Using a Thermal Couple sas the Temperature Sensor Compensation Network Design and Tuning Output Current Monitoring Output Voltage Monitoring Seebeck Voltage Measurement Frequently Asked Questions

Copyrights 2000-2020, Analog Technologies, Inc. All Rights Reserved. Updated on 1/6/2020 www.analogti.com 6 Analog Technologies ATEC24V10A-D High Voltage High Current TEC Controller

ORDERING INFORMATION

Part # Description ATEC24V10A-D−D Controller in DIP package ATEC24V10A-D−S* Controller in SMT package* * This surface mount package cannot be soldered by reflo w oven. It must be soldered manually with the iron temperature < 610°F (≈321°C). PRICES Quantity 1 − 9 10-49 50−1 99 200 − 499 ≥500 ATEC24V10A- D−D ATEC24V10A- D−S EVALUATION BOARD In order to evaluation the ATEC24V10A-D with convenience, an evaluation board is available. The part number is: ATEC24V10A-DEV-D or ATEC24V10A-DEV-S. The former is for evaluating the DIP package controller; the latter is for evaluating the SMT type. It comes with: 1. A configurable temperature measurement network, which configures the set-point temperature range. 2. A tunable compensation network, which can be tuned to match the thermal load, thus, achieving the highest thermal response speed and maintain highest temperature stability as the thermal load and/or ambient temperature changes. The datasheet of this evaluation board can down-loaded on our website. Please notice that there 2 types of connection designs: DIP socket and SMT soldering pads, the former is for evaluating DIP package controller and the latter is for the SMT version. For the DIP type, the controller can be plugged and unplugged conveniently, but the SMT version can only be soldered for mounting it on and desoldered for taking it off the board. Therefore, it is recommended to use the DIP type for evaluation purpose. For the users who need SMT package in the application but do not want to purchase the DIP package controller only for evaluation, there is a free loan program we offer: 1. Pay us a down payment for the full price or send us a P.O. if there is an account set up in our system, we send the controller with the evaluation board. 2. Evaluate it for 30 days free of charge, send it back after using and we will refund the payment.

Copyrights 2000-2020, Analog Technologies, Inc. All Rights Reserved. Updated on 1/6/2020 www.analogti.com 7 Analog Technologies ATEC24V10A-D High Voltage High Current TEC Controller NOTICE 1. ATI warrants performance of its products for one year to the sp ecifications applicable at the time of sale, except for those being damaged by excessive abuse. Products found not meeting th e specifications within one year from the date of sale can be exchanged free of charge. 2. ATI reserves the right to make changes to its products or to discontinue any product or service without notice, and advise customers to obtain the latest version of relevant informatio n to verify, before placing orders, that information being relied on is current and complete. 3. All products are sold subject to the terms and conditions of sale supplied at the time of order acknowledgment, including those pertaining to warranty, patent infringement, and limitation of liability. Testing and other quality control techniques are utilized to the extent ATI deems necessary to support this warranty. Specific testing of all parameters of each device is not necessarily performed, except those mandated by government requirements. 4. Customers are responsible for their applications using ATI components. In order to minimize risks associated with the customers’ applications, adequate design and operating safeguards must be provided by the customers to minimize inherent or procedural hazards. ATI assumes no liability for applications assistance or customer product design. 5. ATI does not warrant or represen t that any license, either express or implied, is granted under any patent right, copyright, mask work right, or other intellectual property right of ATI covering or relating to any combination, machine, or process in which such products or services might be or are used. ATI’s publication of information regarding any third party’s products or services does not constitute ATI’s approval, warranty or endorsement thereof. 6. IP (Intellectual Property) Ownership: ATI retains the ownership of full rights for special technologies and/or techniques embedded in its products, the designs for mechanics, optics, plus all modifications, improvements, and inventions made by ATI for its products and/or projects.