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參數(shù)資料
| 型號(hào)： | UPD16882GS |
| 廠商： | NEC Corp. |
| 英文描述： | MONOLITHIC CD-ROM/DVD-ROM 3-PHASE SPINDLE MOTOR DRIVER |
| 中文描述： | 整體式CD-ROM/DVD-ROM 3相電機(jī)驅(qū)動(dòng)主軸 |
| 文件頁數(shù)： | 9/20頁 |
| 文件大小： | 190K |
| 代理商： | UPD16882GS |
9
μ
PD16882
Data Sheet S13966EJ1V0DS
If the BRsel pin goes low, a short brake is applied and only the high side is ON if ECR is equal to or less than
EC. When the brake is applied in the reverse direction, the
μ
PD16882 detects the reverse revolution of the
motor and then stops. For ECR-ER and the logic of the BRsel pin, refer to the table below.
BRsel Pin Logic
L
H
ECR > EC
Forward
Forward
ECR < EC
Short brake
Reverse brake
Note
Note
The
μ
PD16882 stops after it has detected the reverse revolution of the motor. When the motor revolves
in the reverse direction, the counter electromotive force flows into the VM pin via the channel of the high-
side Pch MOSFET.
(3) FG pulse selection function
This product can vary index signal (FG) output in proportion to the number of revolutions.
Depending on the setting of the FGsel pin, either single-phase output or three-phase synthesized output can be
selected.
For the logic, refer to the table below.
FGsel Pin Logic
L
H
FG pulse output
Single-phase output
3-phase synthesized output
MAX.
Reverse torque
Output duty
Forword torque
0.75 V
TYP.
+0.75 V
TYP.
100%
(+) ECR-EC
(
)
100%
Input
deadband
±
100 mV
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