© 2022
20
WTC3243 TEMPERATURE CONTROLLER
DESIGN GUIDE — WTC3243
NECESSARY EQUIPMENT
The following equipment is the minimum necessary to
configure the WTC3243 for basic operation.
• WTC3243 Thermoelectric Controller
• Digital multimeter, 4-1/2 digit resolution recommended
• Custom Printed Circuit Board (PCB)
• Thermistor or other temperature sensor
• Peltier-type thermoelectric module or resistive heater
• Power supply or supplies
•
Source for external setpoint (signal generator, trimpot
circuit, etc.)
• 5 to 6 Resistors for Limits (2), P GAIN, Integrator Time
Constant, Sensor Bias Current, Sensor Gain (optional)
• Thermal Solutions Kit, if operating above 5 V or 500 mA
SAFE OPERATING AREA AND THERMAL
DESIGN CONSIDERATIONS
SOA charts are included in this datasheet for quick
reference, but we recommend you use the online tools
instead. Refer to the SOA calculator for the WTC3243.
www.teamwavelength.com/support/design-tools/soa-tc-calculator/
TO ENSURE SAFE OPERATION OF THE WTC3243
CONTROLLER, IT IS IMPERATIVE THAT YOU DETERMINE
IF THE UNIT IS GOING TO BE OPERATING WITHIN THE
INTERNAL HEAT DISSIPATION SAFE OPERATING AREA
(SOA).
DESIGN CONSIDERATIONS WHEN USING THE
WTC3243 WITHOUT THE WTC3293 BOARD
The WTC3243 Thermoelectric Controller is designed to
be integrated into any custom printed circuit board (PCB)
using the following design specifications.
The following equations for resistors are incorporated in the
WTC3243 Circuit Design Calculator online at:
www.teamwavelength.com/support/design-tools/wtc-calculator/
Wiring diagrams for various load configurations are shown
on the subsequent pages. Equations from the calculator
follow the wiring diagrams.
!
