Test Conditions:
System VCC 14V
Mode pin connect to Gnd
Idrive pin connect 18K to VCC 3.3V
VDS pin connect to VCC 3.3V
Use 6x PWM do 6-step block commutation spin function (reference below table), DRV8320H immediately damage for just start spin motor .Replace new one test again still damage .Please help to comment on this, thanks !
H1 |
H2 |
H3 |
GHU |
GLU |
GHV |
GLV |
GHW |
GLW |
1 |
0 |
1 |
PWM |
L |
L |
L |
L |
H |
1 |
0 |
0 |
L |
L |
PWM |
L |
L |
H |
1 |
1 |
0 |
L |
H |
PWM |
L |
L |
L |
0 |
1 |
0 |
L |
H |
L |
L |
PWM |
L |
0 |
1 |
1 |
L |
L |
L |
H |
PWM |
L |
0 |
0 |
1 |
PWM |
L |
L |
H |
L |
L |