Hello,
I am writing this because of a design issue I am having with the ADN8834. For background, I used the evaluation module to test the chip out first, and used the reference design in the datasheet to make a custom board for it. One thing to note is that the company I quoted for this circuit card had a lot of issues being able to manufacture the small form factor of the circuit, which could be part of the problem. I am writing this to verify my design first before I consider manufacturing issues. The voltage reference works, the Vilimcool seems to be constantly set at 1.6V indicating 1A even though I change the set temperature from the thermistor to either heat/cool. The voltage setting stays the same at ~2.3V which makes sense based on the datasheet. The TEC voltage seems to have roughly 1mV across the TEC and the OUT2 voltage seems to stay at 5.8V. That being said, I have roughly 3mA of current draw from the power supply which does not make sense. If you could help me verify my circuit that would be greatly appreciated. Attached are the schematic for the circuit and a portion of the board file that includes the TEC driver.
Thanks and all the best,
