st7pmc2s6 STMicroelectronics, st7pmc2s6 Datasheet - Page 188

• 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

On-chip peripherals
10.6.5
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Figure 77. Typical command signals of a three-phase induction motor
1. These simplified chronograms represent the phase voltages after low-pass filtering of the PWM outputs
Functional description
The MTC can be split into five main parts as shown in the simplified block diagram in
Figure
PWM output
reference signals.
Duty cycle
Input detection block with a comparator, an input multiplexer and an incremental
encoder interface, which may work as:
–
–
The delay manager with an 8/16-bit timer and an 8x8 bit multiplier, which may work as:
–
–
The PWM manager, including a measurement window generator, a mode selector and
a current comparator
The channel manager with the PWM multiplexer, polarity programming, deadtime
insertion and high frequency chopping capability and emergency HiZ configuration
input
The three-phase PWM generator with 12-bit free-running counter and repetition
counter
78. Each of these parts may be configured for different purposes:
a BEMF zero-crossing detector
a speed sensor interface
an 8-bit delay manager
a speed measurement unit
Phase A
Phase B
Phase C
period
PWM
51% 50% 49%
ST7MC1K2-Auto, ST7MC1K6-Auto, ST7MC2S4-Auto, ST7MC2S6-Auto
(1)
(1)
(1)
PWM output
Duty cycle
1%
PWM output
0%
Duty cycle
1%
99%
100%
99%
T0
T1
A
T3
T2
B
HV
T5
T4
C