Other Parts Discussed in Thread: DRV10970
Good Morning,
I have the same problem that was reported in the related question.
Problem can be solved only if I provide an initial voltage <9V (when I turn on switch S1 VINT correctly goes up to 5V) and then if I ramp up the VM voltage up to 12V (which is the voltage required for my application) VINT stays to 5V. However, if I directly provide the required voltage of 12V, when I turn on the switch VINT goes up to only 100mV!
This is really a big problem, since I cannot make the VM voltage slowly ramp up in my final application, and I also don't know which the correct slew rate needs to be.
I need to know if such problem is related to the Evaluation Module (for example, due to the presence of the timer, which is powered from VINT) or if it is related to the component itself DRV10970 (maybe there is a recommended powering sequence when applying certain VM voltages).
If the behaviour was unpredictable, I cannot rely on such component for my application, since the VINT voltage would be required in order to power the Hall ICs of the motor.
Please let me know.
Thank you so much! Kind regards.