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About GDU overcurrent action

Question asked by PRATIBHA SURABHI on Sep 14, 2017
Latest reply on Sep 18, 2017 by PRATIBHA SURABHI

Hi,

 

Using NXP S12Z MagniV, we are rotating a 3 phase BLDC motor.
We are using "Current Sense Amplifier and Overcurrent Comparator" in the GDU.
The GDU is driven by PWM from the PMF module.

Present implementation -
When over current situation occurs, the OC comparator trips and cause the GDU output to be OFF.
Since this point, the motor stops permanently till the MCU reset.

Requested modification -
When the OC comparator trips and cause the GDU to be OFF, is there a way to clear this trip condition using software such that the PWM output from the GDU can be re-started ?
If yes, what is the procedure/settings for this ?



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