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參數(shù)資料
| 型號： | LV8712T |
| 廠商： | SANYO SEMICONDUCTOR CO LTD |
| 元件分類： | 運動控制電子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 1 A, PDSO24 |
| 封裝： | 0.225 INCH, TSSOP-24 |
| 文件頁數(shù)： | 5/14頁 |
| 文件大?。?/td> | 246K |
| 代理商： | LV8712T |
LV8712T
No.A1674-13/14
(13) Current control timing chart(Chopping operation)
(Sine wave increasing direction)
(Sine wave decreasing direction)
In each current mode, the operation sequence is as described below :
At rise of chopping frequency, the CHARGE mode begins. (The Blanking section in which the CHARGE mode is
forced regardless of the magnitude of the coil current (ICOIL) and set current (IREF) exists for 1
μs.)
The coil current (ICOIL) and set current (IREF) are compared in this blanking time.
When (ICOIL < IREF) state exists ;
The CHARGE mode up to ICOIL
≥ IREF, then followed by changeover to the SLOW DECAY mode, and
finally by the FAST DECAY mode for approximately 1
μs.
When (ICOIL < IREF) state does not exist ;
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.
FAST
SLOW
CHARGE
FAST
SLOW
CHARGE
Current mode
fchop
Coil current
STEP
Set current
FAST
SLOW
FAST
SLOW
CHARGE
Current mode
fchop
Coil current
STEP
Set current
Forced CHARGE
section
CHARGE
Chopping cycle
BLANKING section
Chopping cycle
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| LV8712TGEVB | 功能描述:電源管理IC開發(fā)工具 EVM FOR LV8712T RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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| LV8713TGEVB | 功能描述:電源管理IC開發(fā)工具 EVM FOR LV8713T RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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