When connected to te STM32303E-EVAL board the EM_STOP will be connected to either PB7 or PE15 of the MCU.
In my humble opinion the EM_STOP should be connected to the TIM1 BRK function , but neither of these pins can provide the correct functionality.
Although PE15 can be connected to TIM1_BKIN , it should run trough on of the comparators right? At least when a IPM module with built-in NTC is used , the EM_STOP signal is not a clearly defined digital signal.
Now PB7 cannot be used for the purpose of BKIN in any way (rather than via interrupt of the CPU)
If EM_STOP is an emergency break signal activated by either a severe overcurrent or a overheating of the IPM shouldnt the motor driver be shut-off untill these conditions are removed?
We now see conditions of overcurrent lead to a brief disable of the IPM istself , only to return rapidly as the overcurrent condition disappears.Thus leading to a rapid on-off-on-off sequence until the IPM finally breaks down.
If a IPM module with NTC is used , the EM_STOP signal becomes an analog signal since the voltage will become lower as tempreature increases. at a certain point the digital levels of the MCU will not be respected anymore.
