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STSPIN32F0A OC protection

Ryo1
Associate

Hi, I'm using STSPIN32F0A to control BLDC.

I have a question regarding the operation of the OC protection.
we expected that the two corresponding low side MOSFETs would turn on when OC COMP pin detects the over current.
However during actual operation, we observed that the two MOSFETs turn off for 1us which is equivalent to the dead time we set before turning on two low side MOSFETs.

Can we remove this 1us period turning off both low side MOSFETs?
We currently set OC_SEL(PA11) to 1.

1 REPLY 1
Ryo1
Associate

For further information of this behavior,

-During the OC operation, the system is configured to turn ON the low sides of the two corresponding phases to prevent current from flowing back into the power supply.

-However, during actual current limiting operation, even the low-side MOSFETs that are already ON are turned OFF for 1us.