st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 185

• Manufacturer Part Number: st7pmc2s6
• Description: 8-bit Mcu For Automotive With Nested Interrupts, Flash, 10-bit Adc, Brushless Motor Control, 5 Timers, Spi, Linsci?
• Manufacturer: STMicroelectronics

ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
Figure 75. Example of command sequence for 6-step mode (typical 3-phase PM BLDC motor
1. Control and sampling PWM influence is not represented on these simplified chronograms.
- approx. HV/2 (PWM on)
(BEMF induced by rotor)
- approx. 0V (PWM off)
Superimposed voltage
switch
Step
Node
A
B
0
1
2
3
4
5
C
control)
HV
HV/2
0
HV
HV/2
0
HV
HV/2
0
Demagnetization
1
1
HV/2
HV
0V
2
Wait for BEMF = 0
3
D
2
2
4
C
2
Commutation delay
5
Z
2
6
3
1
2
3
4
PWM off pulses
T0
T1
A
I
4
D
5
Z
5
5
I
5
I
1
C
T3
T2
4
On-chip peripherals
B
HV
I
2
I
6
6
I
3
T4
T5
t
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C