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POWERSTEP01 bảng dữ liệu(PDF) 23 Page - STMicroelectronics

tên linh kiện POWERSTEP01
Giải thích chi tiết về linh kiện  System-in-package integrating microstepping controller and 10 A power MOSFETs
PDF  92 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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POWERSTEP01 bảng dữ liệu(HTML) 23 Page - STMicroelectronics

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DocID025022 Rev 5
23/92
powerSTEP01
Functional description
92
Figure 5. Charge pump circuitry
7.4
Microstepping
The driver is able to divide the single step into up to 128 microsteps. Stepping mode can be
programmed by the STEP_SEL parameter in the STEP_MODE register (Table 27 on
page 61). In current mode driving the maximum microstepping resolution is 1/16th of the
step.
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 zero and the absolute position counter value (Section 7.5) becomes meaningless.
Figure 6. Normal mode and microstepping (128 microsteps)
V
S
D2
V
CP
f
PUMP
to high-side
gate drivers
V
S
CP
V
D1
C
BOOT
C
FLY
D1
D2
VBOOT
CP
VDD
V
Charge pump oscillator
+ V
V
S
CP
V
D1
+ V
AM12827v1
step 1
step 1
step 2step 3step 4
step 1
Reset
position
step 1
step 2 step 3 step 4
Normal driving
Microstepping
PHASE A current
PHASE B current
PHASE A current
PHASE B current
microsteps
128
μsteps
128
μsteps
128
μsteps
128
μsteps
Reset
position
AM12828v1



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