Dear DRV595 expert!
I have purchased the DRV595EVM module and was inteding to use it to drive a TEC module.
When testing the module seems to go into a fault state. It shut-s off for approcimately 1.2s.
The device is not warm since I can pit my finger on it and keep it there.
If I disconnect the JP3 it will remain in the off state. Based on that my understanding is that it is the over current detection happening.
I find this strange since I am far from the 7.5A trip point in the application.
I have two TEC's in series and test them by supplying a set of supply voltages.
The EVM module is configured as out of the box. I have connected the IN- to GND and IN+ is set so that I will get maximum current.
Starting at 27VDC I can get 4A.
When decreasing the voltage the current will also decrease however the failure keeps happening.
At 21VDC I have 3A but at the module still module shut's off.
At 17.7VDC I have 2.5A but unit still behaves intermittent and shut's off. Hower the failures seems to happen with less intensity.
At 14.2 VDC I have 2A and still have the problem.
Could you please advice?
EVM module is stated to handle 3A but device 4A. What is the limeting factor on the EVM board since the device can meet 4A?