INA226: Design challenge support

Hi Team,

I had following request:

"        Our application is as follows; There is a board that controls the motor speed and position. We provide power for this card. It's about 28V, 2A but that changes according to speed.
There is a Vicor DC/DC converter (isolated DCM) behind it, an INA226 for instantaneous voltage and current measurement, and a mosfet for switching the power on and off.
We observed that this INA226 chip burned after 3-4 times of normal operation for a while. (There is a sharp black dot on the chip and it doesn't work).
Since our load is the motor, there may be voltage/current fluctuations in the power line. (back emf)
My question is, how sensitive is the INA226 to these fluctuations? And could that be the reason why it burned?      "

And i was asking following:

"      Thank you for sharing, the following paragraph in the 7.4.2 Filtering and Input Considerations section on the datasheet caught my attention, I would like to get your opinions on this matter, and also, if possible, can you observe the voltage on this pin with an oscilloscope until a malfunction occurs?
Also, have you had the opportunity to get feedback via the Alert pin?
“ Overload conditions are another consideration for the device inputs. The device inputs are specified to tolerate 40 V across the inputs. A large differential scenario might be a short to ground on the load side of the shunt. this type of event can result in full power-supply voltage across the shunt (as long the power supply or energy storage capacitors support it). Removing a short to ground can result in inductive kickbacks that could exceed the 40-V differential and common-mode rating of the device. Inductive kickback voltages are best controlled by Zener-type transient-absorbing devices (commonly called transzorbs) combined with sufficient energy storage capacity See the TI Design, Transient Robustness for Current Shunt Monitors (TIDU473), which describes a high-side current shunt monitor used to measure the voltage developed across a current-sensing resistor when current passes through it. “

And so feedback is following:

"        1- Alert pin is connected to a mcu and when a malfunction occurs, the mcu stays in a constant state of alert.
2- Since our load is an motor, the mentioned inductive kickback is probably occurring.
3- I haven't had a chance to measure it yet, but the "40-V differential and common-mode rating" may be exceeded for the same reason.
4- Putting a TVS diode at the beginning and end of the shunt resistor can be a good solution. (And should we also prevent current from flowing in the opposite direction?)
6- Do I have to look at pins 9 and 10 one by one, or look at these pins differentially?       "

So from here just to be sure can you please check and advise how we should investigate this problem?

Thanks in advance

Best Regards

Furkan