參數(shù)資料
型號(hào)： LV8414CS
元件分類(lèi)： 運(yùn)動(dòng)控制電子
英文描述： STEPPER MOTOR CONTROLLER, 0.6 A, PBGA32
封裝： WLP-32
文件頁(yè)數(shù)： 28/36頁(yè)
文件大?。?/td> 451K
代理商： LV8414CS
LV8414CS
No.A1868-34/36
12. Current control operation specification
[Sine wave increasing direction]
[Description of current limiting operation]
In each current mode, the operation sequence is as described below :
At rise of chopping frequency, the CHARGE mode begins.
The coil current (ICOIL) and setting current (IREF) are compared in the forced CHARGE section.
When (ICOIL
< IREF) existed in the forced CHARGE section:
The CHARGE mode is established until ICOIL
≥ IREF. Then it is switched to the SLOW DECAY mode,
and finally it is switched to the FAST DECAY mode.
When (ICOIL
< IREF) did not exist in the forced CHARGE section:
The FAST DECAY mode begins. The coil current is attenuated in the FAST DECAY mode till one
cycle of chopping is over.
Above operations are repeated. Normally, the SLOW (+FAST) DECAY mode continues in the sine wave increasing
direction, then entering the FAST DECAY mode till the current is attenuated to the set level and followed by the SLOW
DECAY mode.
(Charge mode)
(Slow decay mode)
(Fast decay mode)
FAST
SLOW
CHARGE
FAST
SLOW
CHARGE
Current mode
fchop
(Initial state:
400kHz)
Coil current
CLK
Set current
Forced
CHARGE
section
FAST
SLOW
FAST
SLOW
CHARGE
Current mode
fchop
(Initial state:
400kHz)
Coil current
CLK
Set current
Forced
CHARGE
section
Forced CHARGE
section
CHARGE
VM
ON
OFF
ON
VM
ON
OFF
ON
VM
OFF
ON
OFF
ON
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