ST7FMC1K2B3 STMICROELECTRONICS [STMicroelectronics], ST7FMC1K2B3 Datasheet - Page 200
ST7FMC1K2B3
Manufacturer Part Number
ST7FMC1K2B3
Description
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
1.ST7FMC1K2B3.pdf
(309 pages)
- Current page: 200 of 309
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ST7MC1xx/ST7MC2xx
MOTOR CONTROLLER (Cont’d)
10.6.10 PWM Generator Block
The PWM generator block produces three inde-
pendent PWM signals based on a single carrier
frequency with individually adjustable duty cycles.
Depending on the motor driving method, one or
three of these signals may be redirected to the oth-
er functional blocks of the motor control peripheral,
using the PCN bit in the MDTG register.
When driving PM BLDC motors in six-step mode
(voltage mode only, either sensored or sensor-
less) a single PWM signal (Phase U) is used to
supply the Input Stage, PWM and Channel Man-
ager blocks according to the selected modes.
For other kind of motors requiring independent
PWM control for each of the three phases, all
PWM signals (Phases U, V and W) are directed to
the channel manager, in which deadtime or a high
Figure 117. PWM generator block diagram
200/309
1
Up to 16MHz
Notes:
Reg
F
U
mtc
event:
Update of compare registers
PWM interrupt generation
Preload registers transferred
to active registers on U event
MPCR Register
PCP[2:0] bits
Prescaler
U
U
U
U
13-bit Compare W Register
13-bit Compare U Register
13-bit Compare V Register
12-bit Compare 0 Register
12-bit PWM Counter
Clear
frequency carrier may be added. This is the case
of AC induction motors or PMAC motors for in-
stance, supplied with 120° shifted sinewaves in
voltage mode.
10.6.10.1 Main Features
■
■
■
■
■
■
■
■
12-bit PWM free-running Up/Down Counter with
up to 16MHz input clock (F
Edge-aligned
operating modes
Possibility to re-load compare registers twice
per PWM period in center-aligned mode
Full-scale PWM generation
PWM update interrupt generation
8-bit repetition counter
8-bit PWM mode
Timer re-synchronisation feature
or
Up/Down
MPCR Register
CMS bit
MREP Register
Repetition
and
counter
center-aligned
mtc
).
U
PWM
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