參數(shù)資料
型號(hào)： LV8041FN
廠商： SANYO SEMICONDUCTOR CO LTD
元件分類： 運(yùn)動(dòng)控制電子
英文描述： STEPPER MOTOR CONTROLLER, 0.6 A, QCC52
封裝： 7 X 7 MM, VQFN-52
文件頁(yè)數(shù)： 9/24頁(yè)
文件大?。?/td> 802K
代理商： LV8041FN
LV8041FN
No.7944-17/24
Current Control Operation Specifications
Sine Wave Increasing Direction
Coil current
fchop
Set current
CHARGE
CLK
Set current
SLOW
FAST
Current
mode
CHARGE
SLOW
FAST
Sine Wave Decreasing Direction
Each current mode operates with the following sequence.
C o il c u rrent
fc hop
S e t c u rrent
CHA R G E
CL K
S e t c u rrent
SL O W
FAST
C u rrent
m ode
CHA RG E
FA S T
SL O W
CH A R G E
The IC goes to charge mode during chopping oscillation startup. (A period in which the IC forcibly operates in charge
mode exists as 1/8 of a single chopping period regardless of the relationship between the magnitudes of the coil
current (ICOIL) and the set current (IREF).)
During charge mode, the IC compares the coil current (ICOIL) and the set current (IREF).
If the ICOIL < IREF state occurs during charge mode:
Charge mode continues until ICOIL ≥ IREF. After that, the IC switches to slow decay mode and then switches to
fast decay mode for the last 1/8 of a single chopping period.
If the ICOIL < IREF state does not occur during charge mode:
The IC switches to fast decay mode and the coil current is attenuated in fast decay mode until the end of the single
chopping period.
The IC repeats the above operation. Normally, in the sine wave increasing direction, the IC operates in slow (+ fast) decay
mode, and in the sine wave decreasing direction, the IC operates in fast decay mode until the current is attenuate to the set
level, and then the IC operates in slow decay mode.
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PDF描述
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