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Wavelength Electronics HTC 4000 Manual

Low profile, efficient temperature controller

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HTC 4000
Low Profile, Efficient
Temperature Controller
GENERAL DESCRIPTION
The advanced and reliable circuitry of the HTC
Series achieves 0.0009°C temperature stability. Its
small, low profile package is ideal for designs with
space constraints. The linear, PI control loop offers
maximum stability while the bipolar current source
has been designed for higher efficiency.
The HTC Temperature Controllers are easily
configured for any design. Virtually any type of
temperature sensor can be used with the HTC and a
built in sensor bias current source simplifies use with
resistive temperature sensors. The independently
adjustable Proportional Gain (P) and Integrator Time
Constant (I) can be modified to optimize temperature
overshoot and stability.
Other features offer added flexibility. A single resistor
sets the maximum output current to your load. An
onboard reference voltage simplifies potentiometer
control of the temperature setpoint. You can also
choose to operate remotely with an external setpoint
voltage. Two monitor pins provide access to the
temperature setpoint voltage and the actual sensor
voltage.
Figure 1
HTC Series Pin-Out, Top View
© 2012
HTC Temperature Controller
HTC4000-62400-B
FEATURES
• Compact Size
• ±4.0 A Output
• Interfaces with Thermistors, IC Sensors, & RTDs
• Single supply operation +5 V to +12 V
• +10.8 V compliance with +12 V input
• Stabilities as low as 0.0009°C
• Temperature Setpoint, Output Current Limit,
Sensor Bias, Proportional Gain, and Integrator
Time Constant are User Adjustable
• Monitor outputs for Temperature Setpoint and
Actual Temperature
• Linear Bipolar Output operates thermoelectrics
ORDERING INFORMATION
Description
Model
±4 A Temp Controller (for 0.062" board)
HTC4000-62
+5 V @ 8 A Power Supply
PWRPAK-5V
Evaluation Board, 0.062" thick
HTCEVAL PCB
(Includes HTC Heatsink, and thermal grease)
THERM-PST
Thermal grease
November, 2012
e
Pb
RoHS
www.teamwavelength.com

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Summary of Contents for Wavelength Electronics HTC 4000

  • Page 1 November, 2012 HTC 4000 Low Profile, Efficient Temperature Controller GENERAL DESCRIPTION RoHS FEATURES The advanced and reliable circuitry of the HTC • Compact Size Series achieves 0.0009°C temperature stability. Its • ±4.0 A Output small, low profile package is ideal for designs with •...
  • Page 2 PAGE 2 Figure 2 Quick Connect This diagram shows HTC connections for basic operation. Details for each component are on pages 7 & 8. Set Current Limit with Operate from single +5 V trimpot or resistor. to +12 V power supply (+5 V to +12 V) LIMIT - Limit...
  • Page 3: Electrical And Operating Specifications

    ELECTRICAL AND OPERATING SPECIFICATIONS PAGE 3 UNIT ABSOLUTE MAXIMUM RATINGS SYMBOL VALUE Supply Voltage (Voltage on Pin 9 -  +5 to +12 Volts DC contact factory for higher V operation ±4.0 Amps Output Current (See SOA Chart) Watts Power Dissipation, T = +25˚C (See SOA Chart) AMBIENT 0 to +50...
  • Page 4: Pin Descriptions

    PAGE 4 PIN DESCRIPTIONS PIN NO. FUNCTION LIMIT- Resistor value of 0 Ω to 1 MΩ between pins 1 & 2 limits maximum output current. LIMIT+ PID OUT Short pins 2 & 3 for bipolar operation. Bipolar operation allows current to flow in both directions, and is required when using the controller with TECs.
  • Page 5 SAFE OPERATING AREA & HEATSINK REQUIREMENTS PAGE 5 Caution: Do not exceed the Safe Operating Area (SOA). Exceeding the SOA voids the warranty. An online tool for calculating Safe Operating Area is available at: http://www.teamwavelength.com/support/calculator/soa/soatc.php . To determine if the operating parameters fall within the SOA of the device, the maximum voltage drop across the controller and the maximum current must be plotted on the SOA curves.
  • Page 6 PAGE 6 POWER SUPPLY AND NOISE GROUNDING The HTC Series Temperature Controller is a linear DC POWER SUPPLY controller designed for stable, low noise operation. We recommend using a regulated, linear supply for optimum performance. Depending on your requirements, you may be able to use a switching power supply.
  • Page 7 PAGE 7 OPERATION WITH THERMOELECTRICS Output Current Bias - Pins 2 & 3 Thermistors are Negative Temperature Coefficient (NTC) sensors. Thermistor resistance decreases as temperature Limit + increases. Install Jumper RTDs and IC Sensors are Positive Bipolar PID OUT Operation Temperature Coefficient (PTC) sensors.
  • Page 8 PAGE 8 OPERATION WITH THERMOELECTRICS, continued Proportional Gain - Pins 17 & 18 Fixed, Adjustable sets the gain of the system from 1 Metal Film (500 kΩ typical) PROP to 100. A higher proportional gain can PROP help minimize the time to settling but may destabilize loads with long intrinsic lag times.
  • Page 9 OPERATION OF HTCEVALPCB PAGE 9 Limit Setpoint Range Input LIMIT RANGE SETPOINT CONTROL HTC1500/HTC3000 Sensor Bias SET T: SW1: 6 ON 0.5 AMP/1.0 AMP: SW1: 1 ON avelength Electronics, Inc. 1.0 AMP/2.0 AMP: SW1: 2 ON EXTERNAL: SW1: 6 OFF Output 1.5 AMP/3.0 AMP: SW1: 1,2 OFF...
  • Page 10 PAGE 10 HTCEVALPCB SETTINGS OUTPUT MODE SETPOINT INPUT LIMIT RANGE The HTCEVALPCB can be set to The temperature setpoint can be For best results, set R trimpot operate the HTC controllers in bipolar controlled by the onboard R fully clockwise (full-scale) and SET T (TEC) or unipolar (heater) operation.
  • Page 11 HTC PCB SCHEMATIC PAGE 11 © 2012 www.teamwavelength.com HTC4000-62400-B...
  • Page 12 L x W = 0.44” x 0.76” (11.2 mm x 1.93 mm) L x W = 2.02” x .51” (51.3 mm x 12.9 mm) MECHANICAL SPECIFICATIONS -- HEATSINK Wavelength Electronics P/N HTCHTSK shown. 4-40 UNC-2B THRU 2 PLS 1.500 REF.
  • Page 13 PAGE 13 MECHANICAL SPECIFICATIONS -- HTC TOP VIEW (All models) 0.145" x 0.125" [3.68mm x 3.18mm] OBROUND 2.65" [67.31mm] SIDE VIEW HTC4000-62 2.10" [53.34mm] 0.28" [6.99mm] Attach a heatsink to the HTC 0.125" [3.18mm] THRU mounting surface for proper 0.06" [1.52mm] heat dissipation.
  • Page 14: Mounting Instructions

    MOUNTING INSTRUCTIONS Begin by applying thermal grease to the back of the HTC to ensure good thermal contact. We recommend Wavelength Electronics part number THERM-PST. 1. Feed the HTC pins through the large opening in the HTCEVALPCB board so that the HTC...
  • Page 15: Certification And Warranty

    Wavelength will, at its option, either repair or replace LIFE SUPPORT POLICY: products which prove to be defective. As a general policy, Wavelength Electronics, Inc. does not recommend the use of any of its products WARRANTY SERVICE: in life support applications where the failure or...