I have a question on the Vout2. What is the voltage on Vout2 when the object temperature equals to the target temperature? It is described on Page 19 on the Datasheet.
Vout2 = Vtempset - (Z2/Z1)(Vout1 - Vtempset)
When the object temperature equals to the target temperature, Vout1 = Vtempset, so the Vout2 ought to be Vtempset, but in my design it becomes to ZERO, Then TEC starts cooling the object after the object temperature below target temperature,Vout2 = 5V TEC starts heating. Is the phenomenon right? How can I decrease the swing range of Vout1?