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| Analog Technologies, Inc. TEC6A101-DN HIGH EFFICIENCY TEC CONTROLLER Main features: high efficiency, high precision, high reliability, zero EMI, and surface mount. Specifications Target* temp. stability v.s. ambient temp.: Target temp. offset: Target temp. response time: Efficiency: Max. output current: Max. output voltage: Power supply voltage: Packaging: Shielding: Default set-point temp. range***: Operating ambient temp. range: * 0.002C/C 0.01C to 0.1C in less than 5 seconds at 1C step 90% 6A externally adjustable from 0V to Vps - 0.2V 4.75V to 5.25V DIP through hole complete metal shielding on all 6 sides 15C to 35C -25C to 85C Target temperature refers to the actual cold side temperature of the TEC, on where the target is mounted. ** Set-point temperature is the temperature desired to have on the target. *** Can be customized to other range by requirement. Thermistor t Temperature Measurement Circuit Thermal Load 12 Compensation Network Temperature 12 Monitor Circuit High Efficiency 12 H Bridge Drive + TEC - Set-point Temp. Temp. Good Indication Temp. Output Figure 1 TEC Controller Block Diagram 550 E. Weddell Drive, Suite 4, Sunnyvale, CA 94089, U. S. A. Tel.: (408) 747-9760, Fax: (408) 747-9770, Web: w w w .analogt echnologies.com (c) Copyrights 2000 - 2004, Analog Technologies, Inc. All Rights Reserved. 1 Analog Technologies, Inc. TEC Controller 4.75V to 5.25V GND Rm D/A Rm 16 15 14 3 5 4 Voltage Ref. To Microprocessor From Microprocessor 2 1 9 8 VPS PGND PGND TEMPSP TECDR GND 3V TEMPGD SDNG TEMP CMIN 7 A/D Ri 3M Rp 3M Ci 0.22uF GND VTEC 6 10 RTH 13 TECNEG TECPOS 12 TEC6A101-DN + TEC - 11 t Thermistor Rth = 10K @ 25 oC Compensation network (Can be internal or external) Cd 0.33uF Rd 1M Figure 2 TEC Controller Connections Pin Descriptions Pin 1, TEMPGD, Temperature good indication. It is pulled high when the set-point temperature and the actual target temperature are less than 0.1C in difference. The internal pull up resistor to Vps is 10K Ohm. The pull down resistance is 250 Ohm @ Vps = 5V. Pin 2, 3V, reference voltage output, 3V. It can be used for external A/D's and/or D/A's. Maximum output sourcing current 1.5mA and sinking current is 4mA. Vo = 50ppm/C max. Pin 3, TEMPSP, target temperature set-point value. The open circuit voltage is 1.5V, corresponding to a set-point temperature of 25C. When Vps = 5V, it can be set from 0.1V to 5V and the set-point temperature changes from 15C to 50C (See the curve in the back). It is recommended to use the 3V reference voltage provided by the this controller for setting the set-point temperature. The set-point temperature at 3V is 35C by default. The input impedance is 10K. This pin can be set by using a D/A, a POT, or a single resister. When the set-point temp. is fixed at 25C, leave this pin unconnected. Pin 4, GND, signal ground for the A/D, D/A and the thermistor. Pin 5, TECDR, TEC control voltage input. It can be left unconnected or used to control the TEC voltage directly. Set TECDR between 0V to Vps, the voltage across TEC will be: TEC voltage = Vps - 2*TECDR. It can also be used to configure the maximum voltage cross the TEC: Max. TEC voltage = Vps*Rm/(Rm+10K), where Rm is the resistance of the two resistors one between TECDR to GND and the other between TECDR to Vps, see Figure 2. 550 E. Weddell Drive, Suite 4, Sunnyvale, CA 94089, U. S. A. Tel.: (408) 747-9760, Fax: (408) 747-9770, Web: w w w .analogt echnologies.com (c) Copyrights 2000 - 2004, Analog Technologies, Inc. All Rights Reserved. 2 Analog Technologies, Inc. TEC6A101-DN Pin 6, VTEC, TEC voltage indication. TEC voltage = [max. TEC voltage]*[Vps - 2*VTEC]/Vps. When TECDR is used to control the TEC voltage directly, measure TECDR to derive the TEC voltage instead, and use this formula: TEC voltage = Vps - 2*TECDR. The maximum driving current of pin VTEC is 30mA and the output voltage swing is 0V to Vps. Pin 7, CMIN, compensation input pin for the thermal control loop. Leave it open in production. When prototyping, use this pin with a tuner on the evaluation board, TTV2.1 (produced by ATI) to tune the compensation network to match the characteristics of the thermal load. Pin 8, TEMP, actual target temperature. It swings from 0V to Vps, corresponds to 15C to 50C when Vps equals 5V, see the curve in the below. Pin 9, SDNG, shut down control. When pulled low, it shuts down the controller. Leave it open or pull it high to activate the controller. This pin is internal pull up by a resister of 100K to Vps. Pin 10, GND, signal ground, internally connected to Pin 4 GND, can be used for connecting the thermistor. Pin 11, RTH, connect to the thermistor for sensing the target temp. Thermistor's other end connects to the signal ground, pin 4 or pin 10. Rth = 10K @ 25C. Other thermistors or temperature sensors can also be used, Consult with us. Pin 12, TECPOS, connects to TEC positive terminal. Pin 13, TECNEG, connects to TEC negative terminal. Pin 14, PGND, power ground for connecting to the power supply. Pin 15, PGND, power ground for connecting to the power supply, internally connected with pin 14. Pin 16, VPS, positive power supply rail of 5V, depending on the module. Mounting the TEC controller on PCB's The through hole package can be mounted either by using a socket, or soldered directly on the PCB manually or by wave soldering machine. Customizations It is often found that some of the default specifications do not meet our users particular need. We offer customizations on these specifications: 1. Maximum output voltage across TEC. When ordering, the part number will become: TEC6A101-DN-[max. TEC voltage], e.g., TEC6A101-DN-3V. 2. Set-point temperature range. When ordering, specify the lower limit and the upper limit. The part number will become: TEC6A101-DN-3V-[lower temp. limit]-[upper temp. limit], e.g. for a temperature range from 10C to 40C, TEC6A101-DN-3V-10C-40C, by setting TEMPSP = 0.1V, the set-point temperature is 10C; setting TEMPSP = 3V, the set-point temperature is 40C. 3. Compensation network. It is an essential part of the TEC controller and should match the thermal load properly. The default built in network is designed to match the thermal load found in the butter fly packages. When the thermal load is not in the butter fly package, these are the choices: 550 E. Weddell Drive, Suite 4, Sunnyvale, CA 94089, U. S. A. Tel.: (408) 747-9760, Fax: (408) 747-9770, Web: w w w .analogt echnologies.com (c) Copyrights 2000 - 2004, Analog Technologies, Inc. All Rights Reserved. 3 Analog Technologies, Inc. TEC6A101-DN A. Specify the TEC controller without the compensation network: TEC6A101-D, and use external components to build the compensation network on the PCB. The component values of the compensation network can be tuned by using our evaluation kit. B. Let us find a proper compensation network for you and have it built in, a custom part number will be given for the TEC controller. In this way, the customers need to send the thermal load to us, an NRE fee may apply. C. Customers find the values of the components in the compensation network by using our evaluation kit, give the values to us and we will build them into our controller modules, a custom part number will be given for the TEC controller. More Applications If you want to use this TEC controller for other applications not discussed here, please contact us. Mechanical Dimensions TEMPGD 3V TEMPSP GND TECDR VTEC CMIN TEMP 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 VPS PGND PGND TECNEG TECPOS RTH GND SDNG Figure 3 Top View of the TEC Controller 4.5mm 0.42mm 18mm 3mm 0.6mm 2.54mm 3mm 4.5mm Figure 4 End View of the TEC Controller Figure 5 Side View of the TEC Controller 550 E. Weddell Drive, Suite 4, Sunnyvale, CA 94089, U. S. A. Tel.: (408) 747-9760, Fax: (408) 747-9770, Web: w w w .analogt echnologies.com (c) Copyrights 2000 - 2004, Analog Technologies, Inc. All Rights Reserved. 4 Analog Technologies, Inc. Ordering Guide Part Number TEC6A101-D TEC6A101-DN TEC6A101-DN-X.XV TEC6A101-DN Note Maximum output voltage across TEC can be selected from 5V, 4.8V, 4V, 3.5V, 3V, 2.5V and 2V, or specify any value from 0.8V to VPS. Description 5V power supply in DIP package without internal compensation network 5V power supply in DIP package with internal compensation network 5V power supply in DIP package with internal compensation network, the maximum voltage is X.X volt (with one decimal point). YY = lower temperature limit when TEMPSP = 0.1V. ZZ = upper temperature limit when TEMPSP = 3V. Come with internal compensation network, maximum output voltage is 3.5V, lower end set-point temperature is 15C when TEMPSP = 0.1V and the upper end setpoint temperature is 55C. TEC6A101-D-YYC-ZZC E.g.: TEC6A101-DN-3.5V15C-55C 550 E. Weddell Drive, Suite 4, Sunnyvale, CA 94089, U. S. A. Tel.: (408) 747-9760, Fax: (408) 747-9770, Web: w w w .analogt echnologies.com (c) Copyrights 2000 - 2004, Analog Technologies, Inc. All Rights Reserved. 5 Analog Technologies, Inc. Rth v.s. Temperature TEC6A101-DN Rth (K Ohm) 30 25 20 15 10 5 0 5 10 15 20 25 30 35 40 Temperature (C) 45 50 55 60 TEMPSP (V) 5 4.5 4 3.5 3 2.5 2 1.5 1 0.5 0 15 20 25 TEMPSP v.s. Temperature 30 35 40 45 50 Temperature (C) 550 E. Weddell Drive, Suite 4, Sunnyvale, CA 94089, U. S. A. Tel.: (408) 747-9760, Fax: (408) 747-9770, Web: w w w .analogt echnologies.com (c) Copyrights 2000 - 2004, Analog Technologies, Inc. All Rights Reserved. 6 Analog Technologies, Inc. I Rth (uA) 114 109 104 99 94 89 84 79 74 69 64 59 54 15 20 25 30 35 40 I Rth v.s. Temperature TEC6A101-DN 45 50 Temperature (C) V Rth (V) 0.9 0.85 0.8 0.75 0.7 0.65 0.6 0.55 0.5 0.45 0.4 15 20 25 V Rth v.s. Temperature 30 35 40 45 50 Temperature (C) 550 E. Weddell Drive, Suite 4, Sunnyvale, CA 94089, U. S. A. Tel.: (408) 747-9760, Fax: (408) 747-9770, Web: w w w .analogt echnologies.com (c) Copyrights 2000 - 2004, Analog Technologies, Inc. All Rights Reserved. 7 Analog Technologies, Inc. P Rth (uW) 54 53.5 53 52.5 52 51.5 51 50.5 50 49.5 49 48.5 48 47.5 47 46.5 46 15 P Rth v.s. Temperature TEC6A101-DN 20 25 30 35 40 45 50 Temperature (C) Linearity Error in TEMPSP (V) 0.255 0.24 0.225 0.21 0.195 0.18 0.165 0.15 0.135 0.12 0.105 0.09 0.075 0.06 0.045 0.03 0.015 0 -0.015 15 Linearity Error in TEMPSP v.s. Temperature 20 25 30 35 40 45 50 Temperature (C) 550 E. Weddell Drive, Suite 4, Sunnyvale, CA 94089, U. S. A. Tel.: (408) 747-9760, Fax: (408) 747-9770, Web: w w w .analogt echnologies.com (c) Copyrights 2000 - 2004, Analog Technologies, Inc. All Rights Reserved. 8 Analog Technologies, Inc. Important Notice A. B. TEC6A101-DN ATI provides one year warrantee for its products, except for those being damaged by excessive abuse. 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 information to verify, before placing orders, that information being relied on is current and complete. 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. ATI warrants performance of its products to the specifications applicable at the time of sale in accordance with ATI's standard warranty. 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. Customers are responsible for their applications using ATI components. In order to minimize risks associated with the customer's applications, adequate design and operating safeguards must be provided by the customer to minimize inherent or procedural hazards. ATI assumes no liability for applications assistance or customer product design. ATI does not warrant or represent 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. IP (Intellectual Property) ownership: ATI retains the ownership of full rights for special technologies or techniques embedded in its products, the designs for mechanics, optics, plus all modifications, improvements, and inventions made by ATI for the products and/or projects. C. 550 E. Weddell Drive, Suite 4, Sunnyvale, CA 94089, U. S. A. Tel.: (408) 747-9760, Fax: (408) 747-9770, Web: w w w .analogt echnologies.com (c) Copyrights 2000 - 2004, Analog Technologies, Inc. All Rights Reserved. 9 |
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