We having a board which uses the ADN8835 TEC controller to control the temperature of a Peltier. The temperature set point is set to 25 degrees with a span of 10 degrees up and down using the circuit below.
If I understand it correctly, this is because IN1N is 1.25V at 25 degrees Celcius an IN2P is always 1.25V because o the 10k+10k voltage divider. We can overrule this set point, by driving a different voltage on the IN2P pin. This is connected to a DAC (AD5593RBCPZ) which can generate a voltage from 0 to 2.5V (TEC_PIC1_VREF voltage in the schematic below).
Now our customer would like to have a different temperature set point and much wider range (for example 10-60 degrees). I can't figure this out with the datasheet.
Would it be possible to change the set point and range? If so, how can this be calculated?
Thanks in advance!
