User Manual
Contents
1. 0 5 10 15 20 25 30 35 40 45 50 Temperature in C Fig 5 Monitor voltage for different B values of 10kR NTC Resistors Setting TEC Voltage and Current Limits TEC voltage and current limits are adjusted by connecting a resistor between ground and the corresponding pin of the PL TEC 1 0305 PWM The following table shows the relation between the resistor value and the voltage current limit 12 1 22 22 15 1 45 18 1 66 33 1 24 22 1 91 47 1 50 1 77 27 2 19 33 2 48 100 2 04 39 2 72 47 3 00 56 3 26 3 55 82 3 81 100 4 08 150 2 28 220 2 47 330 2 63 470 2 73 680 2 81 1000 2 87 Table 1 Resistor values for TEC current and voltage limits 7 Germany and other countries LASER COMPONENTS GmbH Phone 49 8142 2864 0 Fax 49 8142 2864 11 info lasercomponents com USA LASER COMPONENTS IG Inc Phone 1 603 821 7040 Fax 1 603 821 7041 info laser components com Great Britain LASER COMPONENTS Uk Ltd Phone 44 1245 491 499 Fax 44 1245 491 801 info lasercomponents co uk France LASER COMPONENTS S A S Phone 33 1 3959 5225 Fax 33 1 3959 5350 info lasercomponents fr Pic LAS FOCUSSING POWER TO THE POINT Tec Current Monitor The current which is driven through the TEC module can be monitored at PIN 5 Itec The output voltage corresponds to the current by kec Ua 1 5 V 0 4 A readout of 1 5 V means zero current 1 9 V 1 0 A pos 0 7 V 2 A neg2. Pic LAS s ER FOCUSSING POWER TO THE POINT COMPONENTS U S e r M a n Uu a Rev 09 01 valid from June 2009 PL TEC 1 0305 PWM Germany and other countries LASER COMPONENTS GmbH Phone 49 8142 2864 0 Fax 49 8142 2864 11 info lasercomponents com USA LASER COMPONENTS IG Inc Phone 1 603 821 7040 Fax 1 603 821 7041 info laser components com Great Britain LASER COMPONENTS UK Ltd Phone 44 1245 491 499 Fax 44 1245 491 801 info lasercomponents co uk France LASER COMPONENTS S A S Phone 33 1 3959 5225 Fax 33 1 3959 5350 info lasercomponents fr Pic LAS FOCUSSING POWER TO THE POINT Table of Contents PLSTEG 1 030 5 PVVM zzii tete ieee e p tete hana reet etu MER RO Rr tete e eset ead 3 Pin Assignments and Description csi tentent tet Ee er i Rer Ue abe apia RAE EERS 4 Minimal Operating Environment sssssssssssssseeneeeeeeeeeeenneeeenn enn rennen enn nennen 5 Typical Operating ENVION EN sesinin e neri iet test erede guest Net edu eder tutu n 5 Wheatstone Bridge t tote terrent e e tn veda xcd repete ti exte tua edat etude 6 Temperature Setpoint and Monitor nennen 6 Setting TEC Voltage and Current Limits sssssssssssssssseeeeeeeeeemeee ee enne 7 TeceCurrert MORIOE eiua ern errat Ce rhetor rh onte en od t oru Cabs Pasa ta nig ux onec ru bed ua Dd Fe Baa Pues 8 Absolute Maximum Ratings destroying limits 8 MV AIT AILY c aes 8 2 Germany and other
3. Accuracy 10 The diagram shows the full trace including the internal offset inA Fig 6 TEC current monitor output voltage vs TEC current Absolute Maximum Ratings destroying limits All Input Pins must not exceed the voltage range below zero GND and beyond VCC VCC Limit 6V Peak TEC Current 4 5 A Max UT OT current 10mA Ref Voltage Current Sink into Pin 100A Source 800A Warranty There are no warranties express or implied including any implied warranty of fitness for a particular purpose nor any IMPLIED WARRANTY OF MERCHANTIBILITY made by PicoLAS GmbH except as follows PicoLAS warrants equipment manufactured by it to be free from defects in materials and or workmanship under conditions of normal use for a period of one year from the date of shipment to the purchaser PicoLAS will repair or replace at PicoLAS option any product manufactured by it which is shown to be defective or fails to perform within specifications within one year from the date of shipment to the purchaser OEM modified and custom items of equipment are similarly warranted for a period of ninety 90 days from date of shipment to the purchaser Equipment claimed to be defective must be returned transportation prepaid to PicoLAS in Aachen Germany within the warranty period Returns must be preauthorized by contact with PicoLAS customer service department Returns without
4. an RMA Number and or incorrect RMA documentation and or without prepaid transportation will be refused Written documentation of such preauthorization shall be included with the returned item At PicoLAS discretion PicoLAS may elect to repair or replace the equipment claimed to be defective or refund the original purchase price plus taxes and transportation charges incurred by the purchaser 8 www lasercomponents com 06 10 V1 HW picolas manual pl tec 1 0305 pwm pdf Germany and other countries LASER COMPONENTS GmbH Phone 49 8142 2864 0 Fax 49 8142 2864 11 info lasercomponents com USA LASER COMPONENTS IG Inc Phone 1 603 821 7040 Fax 1 603 821 7041 info laser components com Great Britain LASER COMPONENTS Uk Ltd Phone 44 1245 491 499 Fax 44 1245 491 801 info lasercomponents co uk France LASER COMPONENTS S A S Phone 33 1 3959 5225 Fax 33 1 3959 5350 info lasercomponents fr
5. countries LASER COMPONENTS GmbH Phone 49 8142 2864 0 Fax 49 8142 2864 11 info lasercomponents com USA LASER COMPONENTS IG Inc Phone 1 603 821 7040 Fax 1 603 821 7041 info laser components com Great Britain LASER COMPONENTS Uk Ltd Phone 44 1245 491 499 Fax 44 1245 491 801 info lasercomponents co uk France LASER COMPONENTS S A S Phone 33 1 3959 5225 Fax 33 1 3959 5350 info lasercomponents fr Rev 09 02 valid from June 2009 PL TEC 1 0305 PWM Driver for TEC Modules e Bipolar 3A output e Temperature stability up to 0 001 C e Adjustable TEC current and voltage Technical Data Output current Output current limiting range Product Description The PL TEC 1 0305 PWM is a very small safe and most accurate temperature controller for Peltier thermoelectric cooler TEC modules An ultra low drift chopper amplifier maintains 0 001 C temperature stability Output current rather than voltage is directly controlled to eliminate current surges Individual heating and cooling current limits and voltage limits provide the highest level of TEC protection The PL TEC 1 0305 PWM operates from a single supply and provides bipolar 3A output by biasing the TEC between the outputs of two synchronous buck regulators True bipolar operation controls temperature without dead zones or other nonlinearities at low load currents The control system does not hunt when the set point is very close to the natu
6. 4 0 Fax 49 8142 2864 11 info lasercomponents com USA LASER COMPONENTS IG Inc Phone 1 603 821 7040 Fax 1 603 821 7041 info laser components com Great Britain LASER COMPONENTS Uk Ltd Phone 44 1245 491 499 Fax 44 1245 491 801 info lasercomponents co uk France LASER COMPONENTS S A S Phone 33 1 3959 5225 Fax 33 1 3959 5350 info lasercomponents fr Minimal Operating Environment For correct operation at least one additional 100k poti for the temperature setpoint is necessary Connect the 5V to Pins 22 23 24 and 18 GND to 1 2 10 and 15 the poti to the Pins 2 3 and 4 the NTC to the Pins 8 and 9 and finally the TEC to the pins 11 amp 12 vs 13 amp 14 The TEC and NTC are part of the common butterfly package of laser diodes 24 23 22 21 20 19 18 17 16 15 14 13 Fig 1 Minimal operating environment Typical Operating Environment 24 23 22 21 20 19 18 17 16 15 14 13 N C N C T setpoint Fig 2 Typical operating environment 5 Germany and other countries LASER COMPONENTS GmbH Phone 49 8142 2864 0 Fax 49 8142 2864 11 info lasercomponents com USA LASER COMPONENTS IG Inc Phone 1 603 821 7040 Fax 1 603 821 7041 info laser components com Great Britain LASER COMPONENTS Uk Ltd Phone 44 1245 491 499 Fax 44 1245 491 801 info lasercomponents co uk France LASER COMPONENTS S A S Phone 33 1 3959 5225 Fax 33 1 3959 5350 info lasercomponents fr Pic LAS FOCUSSING
7. POWER TO THE POINT Typically the PL TEC 1 0305 PWM Driver can be operated using the above environment The two resistors connected to Pins 6 and 7 adjust the maximum TEC current and a resistor connected to Pin 17 adjusts the maximum TEC voltage corresponding to table 1 page 7 Pins 20 and 19 are open collector outputs which can be used to drive LEDs to signal a critical over or under temperature condition respectively These diodes have to be an ultra low current type The series resistors limit the current which flows into the Pins to a maximum of 4 mA The voltage applied to pin 3 is adjusting the temperature setpoint However the signal from the NTC is not linear See figure 4 for details The current through the TEC can be monitored at pin 5 Depending on the power supply an additional blocking capacitor Cgiy4 may be necessary Wheatstone Bridge For improved temperature stability the reference network and the feedback network are linked to the same reference voltage However this yields in a full Wheatstone bridge Any influence on the reference voltage will have the same effect on the measured temperature and the setpoint 1 5 Vrms a 2 J3 ite 3 5 10K Z 8 y TT NTC 10K 1 2 Fig 3 Part of Fig 1 Temperature Setpoint and Monitor The temperature setpoint input voltage corresponds to the TEC temperature through the voltage o
8. f the NTC The voltage of the NTC again depends on its B value and the temperature Figure 4 shows the correlation between TEC temperature and setpoint voltage for different B values of 10kQ NTCs B 4500 1 2 17133 B 3988 1 0 B 3380 0 9 PSS Setpoint Voltage in V 0 2 ASS J ot a a E 0 5 10 15 20 25 30 35 40 45 50 Temperature in C Fig 4 Setpoint voltage for different B values of 10kR NTC Resistors 6 Germany and other countries LASER COMPONENTS GmbH Phone 49 8142 2864 0 Fax 49 8142 2864 11 info lasercomponents com USA LASER COMPONENTS IG Inc Phone 1 603 821 7040 Fax 1 603 821 7041 info laser components com Great Britain LASER COMPONENTS Uk Ltd Phone 44 1245 491 499 Fax 44 1245 491 801 info lasercomponents co uk France LASER COMPONENTS S A S Phone 33 1 3959 5225 Fax 33 1 3959 5350 info lasercomponents fr The temperature monitor is equal to the voltage of the NTC but for a better readability the NTC voltage is inverted and amplified The following graph shows the relation between the NTC temperature and the monitor output voltage 3 4 3 2 3 0 2 8 2 6 24 22 2 0 188 1 6 14 12 1 0 0 8 0 6 0 4 0 2 0 0 Monitor Voltage in V B 4500 B 3988 B 3380
9. ral operating point where only a small amount of heating or cooling is needed An analog control signal precisely sets the TEC temperature The actual TEC temperature and current can be monitored via analog outputs In addition separate over and under temperature outputs indicate when the TEC temperature is out of range An on chip voltage reference provides bias for a thermistor bridge Through the new efficient design the PL TEC 1 0305 PWM itself requires no heat sink or other cooling method to reach its full output power Max output voltage referred to the supply Output voltage limiting range TEC Temperature monitor Supply voltage Temperature stability Monitor outputs Control inputs Power Dissipation Dimensions in mm Weight Operating temperature limiting to protect TEC module e Direct TEC temperature control e No additional heat sink required e Low ripple and low noise design e Multiple monitoring outputs Bipolar 2 5 A 3A peak Heating 0 3 A Cooling 0 3 A Independently limitable by external resistor 4 3 4 3 V Q 45V 2 3 2 3 V 3V 0 4 3 V by external resistor Os 1 5 Ve 3 5 V single supply 0 001 K TEC temperature monitor Over and under temperature output open collector TEC current monitor TEC temperature set point enable TTL level 2 5W 30x18x7 5 mm DIP 24 6 package 8g 20 to 55 C Technical data is subject to change without fu
10. ref by an 47k Resistor So use any resistor to GND to reduce maximum positive current See page 7 for details Maximum Negative TEC Current Connect MAXIN to REF to set default negative current limit 150mV 0 05R 3 A This pin is tied to 1 5 V ref by an 47k Resistor So use any resistor to GND to reduce maximum negative current See page 7 for details Connect the NTC between Rth and Rth NTC value must be around 10k NTC return GND Power outlet for the TEC Connect both pins together Power return for the TEC Connect both pins together GND Maximum Bipolar TEC Voltage Internal Resistor divider 47k to 1 5V and 150k to GND provides the maximum voltage across the TEC The maximum TEC voltage is four times the voltage on this pin Connect any Resistor to GND to reduce MaxV TEC Voltage See page 7 for details Enable Input Tie to Vcc to enable unit a connection to GND will disable the unit No internal pullup resistor Over Temperature Alarm Open drain output pulls low if temperature feedback rises 20mV typically 1 5 C above the set point voltage Typ sinking current 4 mA Under Temperature Alarm Open drain output pulls low if temperature feedback falls 20mV typically 1 5 C below the set point voltage Typ sinking current 4 mA NTC temperature monitor output 0 3 V See page 6 for details Supply Voltage input single Supply 3 to 5 V 4 Germany and other countries LASER COMPONENTS GmbH Phone 49 8142 286
11. rther notice See manual for detailed information Optional Accessories PL TEC BOB Germany and other countries LASER COMPONENTS GmbH Phone 49 8142 2864 0 Fax 49 8142 2864 11 info lasercomponents com USA LASER COMPONENTS IG Inc Phone 1 603 821 7040 Fax 1 603 821 7041 info laser components com Great Britain LASER COMPONENTS Uk Ltd Phone 44 1245 491 499 Fax 44 1245 491 801 info lasercomponents co uk France LASER COMPONENTS S A S Phone 33 1 3959 5225 Fax 33 1 3959 5350 info lasercomponents fr Pic LAS FOCUSSING POWER TO THE POINT PIN 24 PIN 23 PIN 22 PIN 21 PIN 20 PIN 19 PIN 18 PIN 17 PIN 16 PIN 15 PIN 14 PIN 13 PIN 1 PIN2 PIN3 PIN4 PINS PIN6 PIN7 PIN8 PIN 9 PIN 10PIN 11PIN 12 Pin Assignments and Description Pin Short Desc 1 2 GND 3 FB 4 REF 5 Itec MaxIP 7 MaxIN Oo 8 Rth 9 Rth 10 GND n 13 4 E i 17 MaxV 18 Shdn 19 OT 20 UT n 22 23 24 Vcc Description GND Feedback Voltage input thermal setpoint analog Voltage 0 1 5 V in See page 6 for details 1 500 V Reference Voltage output Max load 50 uA gt 36k to GND Tec Current monitor output The output voltage corresponds to the current by kec Ua 1 5 V 0 4 A readout of 1 5 V means zero current 1 9 V 1 0 A pos 0 7 V 2 A neg Accuracy 10 Maximum Positive TEC Current Connect MAXIP to REF to set default positive current limit 150mV 0 05R 3 A This pin is tied to 1 5 V
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