Other Parts Discussed in Thread: DRV594, , DRV593
Hello there.
We plan to use Peltier Element in our application to keep the temperature in the desired range.
- When the temperature is above a certain limit (e.g. 50C), we would drive Peltier (TEC) element to start cooling.
- On the other hand, when the temperature drops below the threshold (e.g. 10C), we would need to drive Peltier Element to start heating.
Our device would operate outdoors. The majority of the time, there will be no need neither for Cooling nor for Heating. Consequently, the TEC driver should be inactive. We would need to start driving the Peltier only when the temperature is outside the pre-defined window (e.g. +10C to +50C).
Among the TEC drivers you manufacture (DRV592, DRV593, DRV594...), DRV592 seems to be the most appropriate for us given the fact that we normally keep the driver inactive (no current through Peltier Element). If we use DRV593 and DRV594, this would mean we would need to continuously provide VDD/2 voltage to IN+ keeping the device in neutral mode. This would imply that our MCU should continuously provide PWM output with 50% duty cycle and use 50%-100% duty cycle range for heating and 0%-50% duty cycle range for cooling. This seems to be more complicated compared to DRV592 approach where we have two PWMs from MCU used for Cooling and Heating (when those PWMs are inactive there is no neither Cooling nor Heating).
Is there any better way we can drive our Peltier element? Is there any place where we can buy DRV592 Evaluation module and start playing with it?
Thanks in advance for your time and efforts. Looking forward to reading from you.
Sincerely,
Bojan.
