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參數(shù)資料
| 型號： | UPD16882 |
| 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相電機驅(qū)動主軸 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 190K |
| 代理商： | UPD16882 |
8
μ
PD16882
Data Sheet S13966EJ1V0DS
7. FUNCTION OPERATION TABLE
(1) ST/SP (start/stop) function
Turning ON/OFF the spindle can be controlled by the ST/SP pin while the oscillator is operating. When the
ST/SP pin is high, the spindle is activated (operating); when it is low, the spindle stops. When the spindle stops,
the MOSFET at the high side is ON and the MOSFET at the low side is OFF, serving as a short brake.
ST/SP = “H”
Input Signal
OUT2
L
L
L
L
H
H
H
H
H
H
L
L
OUT0
H
H
H
H
H
H
L
L
L
L
L
L
OUT1
H
H
L
L
L
L
L
L
H
H
H
H
Low-side PWM
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Circuit Operation
Excited Phase
Excited (operates)
Regeneration (brake)
Excited (operates)
Regeneration (brake)
Excited (operates)
Regeneration (brake)
Excited (operates)
Regeneration (brake)
Excited (operates)
Regeneration (brake)
Excited (operates)
Regeneration (brake)
W
→
V
W
→
U
V
→
U
V
→
W
U
→
W
U
→
V
During regeneration (brake), the input signal goes through the channel of the high-side Pch MOSFET.
ST/SP = “L”
Drive Timing (Motor Output Signal)
OUT1
OUT0
OUT2
PWM
Circuit Operation
Short brake
(2) Torque control
The output stage is driven by applying a differential voltage between the control reference voltage (ECR) and
control input voltage (EC) pins (ECR-EC). With this product, the ECR-EC differential voltage and output PWM
duty have a linear relationship. The input deadband is
±
50 mV TYP. and the duty of the standard model is 100%
at 0.75 V (excluding the deadband).
The
μ
PD16882 also has a break selection pin (BRsel). When this pin goes high, ECR is less than EC and the
brake is applied in the reverse direction (refer to the figure and table on the next page).
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