DRV8312_14 Datasheet, PDF (18/36 Pages) Texas Instruments – Three Phase PWM Motor Driver

DRV8312
DRV8332
SLES256D – MAY 2010 – REVISED JANUARY 2014
www.ti.com
S1 S2 S3 S4 S5 S6 S1 S2 S3 S4 S5 S6
Back EMF (Vab)
0V
0V
Back EMF (Vbc)
0V
Back EMF (Vca)
Phase A
Current and Voltage
Va
Ia
0A
0V
Phase B
Current and Voltage
Vb
0A
Ib
0V
Phase C
Current and Voltage
Vc
0A
Ic
0V
PWM_A
PWM_B
PWM_C
RESET_A
RESET_B
RESET_C
360^o
PWM= 100%
360^o
PWM= 75%
Figure 12. Sensorless Control with 6 Steps Trapezoidal Scheme
18
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