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參數(shù)資料
| 型號(hào)： | L6238 |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Sensorless Spindle Motor Driver(無(wú)傳感器主軸電機(jī)驅(qū)動(dòng)器) |
| 中文描述： | 傳感器主軸電機(jī)驅(qū)動(dòng)器（無(wú)傳感器主軸電機(jī)驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 8/35頁(yè) |
| 文件大小： | 383K |
| 代理商： | L6238 |
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a)the spindle is stopped.
b)the system is still running at a speed that
allows for resynchronization.
In order to minimize the ramp up time, the micro-
controllerhas the possibility to:
check the SPIN SENSE pin, (which toggles at
the Bemf zero crossingfrequency)
enable the power to the motor based on the
previousinformation. Otherwise the uP may is-
sue a Brake command, followed by the start-
up procedureafter the motorhas stoppedspin-
ning.
Brake
W/Mask
Hold & wait
for decision
Tri-state
W/Mask
Tri-state
W/Mask
RunBrk = 1
OutEna = 0
RunBrk = 1
OutEna = 1
OutEna = 1
&
RunBrk = 0
Run
W/Mask
Hold for
”Align & Go”
R
O
Power
on
Reset
O
R
R
RunBrk = 0
OutEna = 0
SeqInc = X
RuBrk=1
RuBrk=0
Run
Wo/Mask
SeqInc = 0
SeqInc = 1
SeqInc = 0
SeqInc = 1
Action across
line increments
sequencer
Auto Start-up
Enabled
Disabled
RunBrk = 1
OutEna = 0
RunBrk = 1
OutEna = 1
OuEn=0
Outna=1
Hold for
”Align & Go”
Start
”Align & Go”
Align =
Seqncr.
[
S
[
P
OOutna=0
Outna=0
Align=0
Go=0
A
R
From Anywhere
Hold
for
”Resync”
Start
”Resync”
Resync = 1
Release
min mask
Run
Go=
1
(
Z
RunBrk=1
OutEna=0
OOutna=0
Outna=0
NoZc
NoZc
Auto/Ext = 0
Stuck
Rotor
(hold)
Z(Get2ndZc)
OutEna = 1
&
RunBrk = 1
StrRtr = 0
StrRtr = 0
M
RunBrk = 0
&
OutEna = 0
Figure4
: StateDiagram
L6238
8/35
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|---|---|
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