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TMP20AIDCKR Scheda tecnica(PDF) 9 Page - Texas Instruments |
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TMP20AIDCKR Scheda tecnica(HTML) 9 Page - Texas Instruments |
9 / 18 page Vset VTEMP Vset VCC VCC HotPlate ColdPlate Vref VCC VTEMP Vref Vref VCC VCC ColdPlate HotPlate VCC Tobject(C) C32.5u R731.6k R6100M C215.9n R31M VoA333 R2100k V + VM3 + - + U1OPA333 1 3 T1 TEC1 GND T GND VOUT V+ 2 4 5 TMP20 Iset 3 ILimFlg 4 5 _ 6 + 7 T Flg 8 En 12 +V 14 Out 17 V- 19 Imon U3OPA569 V21.4 TEMP(C) R5100k V12.5 RTflag210k Iset 3 ILimFlg 4 5 _ 6 + 7 T Flg 8 En 12 +V 14 Out 17 V- 19 Imon U2OPA569 RTflag110k V + VM2 V + VM1 A + Isink VoA2 RF3100k RG3100k A + Isource VoA1 5 RG1100k TEC,HeatSink,Object, andTMP20Mounting TMP20 www.ti.com SBOS466 – DECEMBER 2009 (1) The TMP20 TINA model is preliminary only. (2) Parameters and definitions: a. Tobject = Temperature of object to be cooled (in °C) b. Vset = Voltage that corresponds to desired output temperature from TMP20 c. Vtemp = Voltage output of TMP20 d. Hotplate = TEC plate on opposite side of object e. Coldplate = TEC plate in contact with object (3) In this configuration, the TEC driver is capable of cooling to –7°C and heating to +41°C; the Vset range is 1.38V to 1.95V. The OPA569 device outputs = ±1.65A, ±0.5V to ±4.5V. The 10M Ω resistors are for TINA convergence. (4) For convergence in TINA software: In Analysis/Set Analysis Parameters menu, set shunt conductance = 1p. Figure 13. Thermoelectric Cooler To download a compressed file that contains the TINA-TI simulation file for this circuit, click the following link: Thermoelectric Cooler. Copyright © 2009, Texas Instruments Incorporated Submit Documentation Feedback 9 Product Folder Link(s): TMP20 |
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