Hello,
That were my thoughts too, but then I calculated:
The copper trace Resistors have an value of 10 mOhms.
The temprature of the board was during the fail about 60...70 °C.
The copper traces were laying under the heatsink.
Even when the resistance would grow up to i.E. 30 mOhms, I would get about 1 V at 30 Amps.
In the data sheet are the absolut maximum ratings of the SP+/SP- between -2...5 V, sound not so probable.
But my asume also is that something happens with the sense circuitry anw destroys the AVDD, which supplys the sebse amplifier.
That were my thoughts too, but then I calculated:
The copper trace Resistors have an value of 10 mOhms.
The temprature of the board was during the fail about 60...70 °C.
The copper traces were laying under the heatsink.
Even when the resistance would grow up to i.E. 30 mOhms, I would get about 1 V at 30 Amps.
In the data sheet are the absolut maximum ratings of the SP+/SP- between -2...5 V, sound not so probable.
But my asume also is that something happens with the sense circuitry anw destroys the AVDD, which supplys the sebse amplifier.