Part Number: DRV8312-69M-KIT
Tool/software: Code Composer Studio
Dear expert and guys, is dead band configuration not need in 28069 when drive the DRV8312 for PMSM FOC? I found the demo PM_Sensorless , pwm 1_B was setting as gpio1 which was always high level. I have understander the DRV8312 drive logic, but i still need to confirm wherther dead band is need. if not , why and how did 8312 avoid vertical conduct by high side and low side FETs?
RESET_A |
PWM_A |
A High side FET |
A Low side FET |
OUT_A |
1 |
0 |
off |
on |
Bus- |
1 |
1 |
on |
off |
Bus+ |
0 |
x |
x |
x |
high-impedance/ and only internal body diodes of the high side and low side FETs allowing current to flow through. |
the deda time between HS and LS FET is 5.5ns, how the 5.5ns was get?