TEC28V15A ANALOGTECHNOLOGIES | Alldatasheet
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right pins are power input or output. The pin function details are given in Table 1. the thermistor has a negative temperature coefficient. measurement circuit. See Figure 6. in the evaluation board application note. Figure 2. Pin Names and Location Table 1. Pin Function Descriptions to 4V, 85Hz, as a reference for the thermistor. interference between this TEC controller and the other SM device.
2 TMGD Digital output
always on, the PID coefficient has been identified.
Copyrights 2000-2022, Analog Technologies, Inc. All Rights Reserved. Updated on 5/3/2022 Email: staff@analogti.com/sales@analogti.com 3 Analog Technologies TEC28V15A High Voltage High Current TEC Controller Pin # Name Note Description
3 SBDN Analog
/Digital input Standby and shut down control. This SBDN pin is internally floated and series with 1k resistor. It’s suggested to pull this pin up to VPS power supply by a 4.99MΩ resistor. If pulled to ground, it shuts down the entire SHUT DOWN: V SBDN < 0.3V, the controller is set to non-working state. STANDBY: 1.9V > V SBDN > 1.5V, all components are set to working state except the output stag es for TEC+ and TEC −. OPERATION: VSBDN > 2.0V, the whole controller is set to working state. 4 GND Ground Signal ground. Connect this pin to th e signal ground of ADCs, DACs, and the signal sources. It can also be used as analog output pin ground. 5 4VR Analog output Reference voltage output, 4.096V. It can be used as the voltage reference by the potentiometers or DACs for sett ing the analog ports, such as TMS, ILM, VLM, etc. It can also be used by ADCs for sensing the analog output ports: TMO, CTMO, ITEC and VTEC. The initial accuracy is 0.1%, and the temperature coefficient is <50ppm/°C max.
6 TMS Analog input
Analog Input port for setting the set-point temperature for the target object. It is internally tied a 1MΩ resistor to the half value of the reference voltage, 2V. The open circuit voltage of this pin is thus 2V, corresponding to a set-point temperature of 25°C by using the default temperature network (with the set-point temperature range being from 15°C to 35°C). It is highly recommended to set this pin’s voltage by using the controller’s 4V voltage reference. This pin can be set by using a POT or DAC. When the set-point temperature needs to be at 25°C, leave this pin unconnected.
7 IN+ Analog input Receive external temperature signal (thermistor and temperature sensor,
etc.)
8 RTH Analog input
Thermistor connection port. Connect to the thermistor which is mounted on the target object for sensing its temperature. By using the default internal temperature network, a 10k Ω @ 25°C thermistor can be used. Other type of thermistors or temperature sensors can also be used, see the application section for details.
9 TMO Analog
Actual target object temperature indication. It swings from 0V to 4V. By using a default internal temperature network, it represents 15°C to 35°C when this pin’s voltage swings 0.1V to 3.9V linearly, provided a standard 10kΩ thermistor is used as the temperature sensor device. 10 CMIN Analog input Compensation input pin for the thermal control loop.
11 IDR Analog input
This voltage is derived from the temperature error detection circuit and used as the input control signal of the current loop for the TEC. Its internal impedance is 10kΩ and can be over-driven by an external analog signal which is able to over-ride the 10k Ω resistor. The voltage range is from 0V to 4V, corresponding to −15A to +15A output current. Setting this pin voltage to 2V forces the output current to zero.
Copyrights 2000-2022, Analog Technologies, Inc. All Rights Reserved. Updated on 5/3/2022 Email: staff@analogti.com/sales@analogti.com 4 Analog Technologies TEC28V15A High Voltage High Current TEC Controller Pin # Name Note Description
12 ILM Analog input
This pin sets the TEC Current Limit. The maximum limit current is 15A. Setting this pin’s voltage from 0V to 4V corresponds to setting the current magnitude limit from 0A to 15A: VILM = 3.75 (A)I MAXOUT
13 VLM Analog input
This pin sets the TEC voltage Limit. The maximum limit voltage is 30V. Setting this pin’s voltage from 0V to 4V corresponds to the TEC voltage magnitude limit being from 0 to 30V: VVLM = 7.5 VV MAXTECTEC −+ −
14 ITEC Analog
TEC current indication. ITEC is an analog voltage output pin with a voltage proportional to the actual current through the TEC. ITEC’s center voltage is 2V, corresponding to zero current through the TEC. VITEC = 7.5 (A)IOUT +2V, where I OUT is the actual output current of the controller, flowing out from TEC+ port and flowing in to TEC− pin.
15 VTEC Analog
TEC voltage indication. VTEC is an analog voltage output pin with a voltage proportional to the actual voltage across the TEC. It swings from 0V to 4V to indicate the output voltage being from −30V to 30V, so the center voltage is 2V. VVTEC = VV TECTEC −+ − +2V
16 CTMO Analog
The controller internal temperature indication output. It can be used for sensing the actual temperature of the controller, to avoid over-heating. 0V to 4V sets the internal temperature from −55°C to 125°C linearly. For the controller with PID function: When there is a new load and the PID coefficient needs to be re- identified, the voltage of the pin is 4V. 17, 18, 19, 20 TEC+ Analog power output This pin is for connecting to the posit ive terminal of the TEC module, all 4 pins are internally connected for increasing the current capability. 21, 22, 23, 24 TEC− Analog power output This pin is for connecting to the negative terminal of the TEC module, all 4 pins are internally connected. 25, 26, 27, 28 PGND Power ground Power ground for connecting to the power supply 0V return node, all 4 pins are internally connected. 29, 30, 31, 32 VPS Power input Power supply voltage positive node. The normal operating voltage range is 5.5V to 25V, the maximum value is 28V. All 4 pins are internally connected. *There are two part numbers for selection, TEC28V15A and TEC28V15ASNCO. The former’s pin 1 is 4VRS, and the latter’s pin 1 is SNCO. It’s recommended to use TEC28V15A.
Table 2. Electrical characteristics.
Copyrights 2000-2022, Analog Technologies, Inc. All Rights Reserved. Updated on 5/3/2022 Email: staff@analogti.com/sales@analogti.com 6 Analog Technologies TEC28V15A High Voltage High Current TEC Controller Parameter Symbol Conditions Min. Typ. Max. Units Temperature Set: TMS pin, pin 6 Input Impedance (See Figure 3 in Page 8 for input equivalent circuit) ZTMSIN 5 MΩ Input Voltage Range VTMSIN 0 4 V Open Circuit Voltage VTMSOP 2 V Temperature Signal Input: IN+ pin, pin 7 Input Voltage Range VIN+ 0 4 V Thermistor Connection Port: RTH pin, pin 8 Input Voltage Range VRTHIN 0 4 V Actual Target Object Temperature Indication: TMO pin, pin 9 Output Voltage Range VTMOOUT RLOAD = 10kΩ to 2V Output Current ITMOOUT VSS = 0V TA = 25°C −12 12 mA Compensation Input: CMIN pin, pin 10 Input Voltage Range VCMIN RLOAD = 10kΩ to 2V Input Current ICMIN −40°C≤ TA≤ +125°C 90 200 pA Compensation Output: IDR pin, pin 11 Output Voltage Range VIDROUT RLOAD = 10kΩ to 2V TEC Current Limit: ILM pin, pin 12 Input Impedance ZILM 21 kΩ Input Voltage Range VILMIN 0 4 V TEC Voltage Limit: VLM pin, pin 13 Input Impedance (See Figure 4 in Page 8 for input equivalent circuit) ZVLM 10 kΩ Input Voltage Range VVLMIN 0 4 V TEC Current Indication: ITEC pin, pin 14 TEC Voltage Indication: VTEC pin, pin 15 Controller Temperature Indication: CTMO pin, pin 16 Output Voltage Range VCTMO TA = 25°C 0 4 V Maximum Load Current ICTMOOUT TA = 25°C −12 12 mA TEC+/TEC− pin, pin 17~20/pin 21~24 Maximum Output Current |IMAXTEC+| |IMAXTEC-| VVPS = 5.5V~25V TA = 25°C 0 15 A Maximum Output Voltage |VOUTMAX| VVPS = 25V 0 20 V
Copyrights 2000-2022, Analog Technologies, Inc. All Rights Reserved. Updated on 5/3/2022 Email: staff@analogti.com/sales@analogti.com 9 Analog Technologies TEC28V15A High Voltage High Current TEC Controller
APPLICATIONS
TEC controller connections are shown in Figure 8. Figure 8.1. TEC Controller Connection
Co pyrights 2000-2022, Analog Technologies, Inc. All Rights Reserved. Updated on 5/3/2022 Email: staff@analogti.com/sales@analogti.com 10 Analog Technologies TEC28V15A High Voltage High Current TEC Controller Figure 8.2. Connection for TEC28V15ADAPID &TEC28V15ASAPID
= 25°C. Use the R-T table of a thermistor. opposed to a continuous current. will reduce the error caused by the RTH self-heating. time, SBDN pin should be between 2.4V and 2.6V. Figure 10. RTD Figure 11. Linear Relationship between VTMO and
4 R1=3kΩ
values are specified by the customer. See Figure 8. network. See Figure 6 and Figure 8. Table 4. Measurement Data of Rth vs. Temperature Figure 25. TMO Pin Voltage vs. Set-point Temperature
Copyrights 2000-2022, Analog Technologies, Inc. All Rights Reserved. Updated on 5/3/2022 Email: staff@analogti.com/sales@analogti.com 21 Analog Technologies TEC28V15A High Voltage High Current TEC Controller
ORDERING INFORMATION
Table 5. Part Number TEC28V15AD DIP package, with Pin 1 4VRS. TEC28V15AS SMT package, with Pin 1 4VRS. TEC28V15ASNCOD DIP package, with Pin 1 SNCO. TEC28V15ASNCOS SMT package, with Pin 1 SNCO. TEC28V15ADAPID DIP package, with Pin 1 4VRS and with auto PID function. TEC28V15ASAPID DIP package, with Pin 1 4VRS and with auto PID function.
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