DRV8300: when using DRV8300，high side MOS and Low side MOS be short at the same time

hi TI member

--when using DRV8300 in motor control , 

sometimes  we found the  high side MOS and low side MOS  turn short at the same time ,the bus line current may larger than  200Amps  （I guess）

power supply is a Lithium battery pack;

check as follows , Q5 and Q6  short --------- Drain 、source、Gate  are  all short  between each other;

--DRV8300 itself  has the dead time protection , so   in which condition ,  will cause the above case , i can't figure out it ,   

we didn't do any restrict  in our software ,pls get that

plz help 

Thanks~~~

plz