Product information "2,2A Temp Controller WHY5640"
The WHY5640 is a general purpose, low cost, analog PI (Proportional, Integral) control loop for use in thermoelectric or resistive heater temperature control applications. The WHY5640 maintains precision temperature regulation using an active resistor bridge circuit that operates directly with thermistors or RTD temperature sensors. Supply up to 2.2 Amps of heat and cool current to your thermoelectric from a single power supply. Accessories include a heatsink WHS302, thermal washer WTW002, and fans WXC303 (5 V), WXC304 (12 V), and an evaluation board WHY5690.
Connect two or more WHY5640 units together and drive higher output currents. A single resistor or trimpot sets the temperature setpoint. Independent heat and cool current limits are set by single resistors. A single resistor sets proportional gain. A resistor / capacitor in series sets the integrator time constant.