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L6482 датащи(PDF) 20 Page - STMicroelectronics

номер детали L6482
подробное описание детали  cSPIN?? microstepping motor controller with motion engine and SPI
PDF  73 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L6482 датащи(HTML) 20 Page - STMicroelectronics

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Functional description
L6482
20/73
Doc ID 023768 Rev 2
Figure 4.
Charge pump circuitry
6.4
Microstepping
The driver is able to divide the single step into up to 16 microsteps. Stepping mode can be
programmed by the STEP_SEL parameter in the STEP_MODE register (Table 22).
Step mode can only be changed when bridges are disabled. Every time the step mode is
changed, the electrical position (i.e. the point of microstepping sinewave that is generated)
is reset to the first microstep and the absolute position counter value (Section 6.5) becomes
meaningless.
Figure 5.
Normal mode and microstepping (16 microsteps)
V
S
V
S + VCP
D1
D2
V
CP
f
PUMP
to high-side
gate drivers
V
S + VCP
V
D1
C
BOOT
C
FLY
D1
D2
VBOOT
CP
VDD
V
V
Charge pump oscillator
AM15034v1
step 1
step 1
step 2 step 3step 4
step 1
Reset
position
step 1
step 2 step 3step 4
Normal driving
Microstepping
PHASE A current
PHASE B current
PHASE A current
PHASE B current
microsteps
16
16
microsteps
16
16
Reset
position
microsteps microsteps microsteps
AM15035v1



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