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參數(shù)資料
| 型號(hào)： | TA8493F |
| 廠商： | Toshiba Corporation |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 3-PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD-ROM DRIVES |
| 中文描述： | 3相全波無刷直流電動(dòng)機(jī)驅(qū)動(dòng)IC的CD - ROM驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 12/25頁 |
| 文件大小： | 250K |
| 代理商： | TA8493F |
TA8493F/AF/BF
2002-01-31
12
Reverse rotation detection circuit
By comparing the two phases of the Hall element signal, this circuit detects a state where the phases are
inverted, at which time the torque is reduced to 0. The detection accuracy is determined by the number of pulses
per rotation of Hall element output.
Note4: Due to its inertial force, the motor does not stop immediately after the torque is reduced to 0.
Rotating Torque
Forward rotation
Reverse torque
Reverse
rotation
Stopped
(Note4)
Forward torque
V
ref
V
C
Hall Element Signal
(phase a)
Direction of Rotation
Hall Element Signal
(phase b)
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