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參數(shù)資料
| 型號： | TA8493AF |
| 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機(jī)驅(qū)動IC的CD - ROM驅(qū)動器 |
| 文件頁數(shù)： | 13/25頁 |
| 文件大小： | 250K |
| 代理商： | TA8493AF |
TA8493F/AF/BF
2002-01-31
13
Output circuit
This circuit uses the system to chop the lower power transistors and resurrect coil current through upper
stage diodes.
The upper-stage power transistors consists of Pch-MOS transistors (2SJ465), which give high torque
efficiency.
Note: Lower-stage predrivers of TA8493AF/BF are supplied by V
CC
to reduce the power dissipation
.
Triangular wave oscillator circuit
Triangular waves are generated by connecting a capacitor between the OSC pin and GND.
This circuit is current output type, which makes PWM signal by comparing its output current with control
amp output current.
50 10
6
[A]
f
OSC
[Hz] (3.0 0.7) [V] C [F]
Taking into account efficiency considerations and the effects of noise, Toshiba recommends using the IC with
an oscillation frequency of 20 kHz to 50 kHz.
(upper stage)
(lower stage)
La
*
V
CC
/V
M
La
R
F
3.0 V
0.7 V
f
PWM
20 k to 50 kHz
(coil current)
Lower Pw T
r
.: ON
Lower Pw T
r
.: OFF
V
M
R
F
GND
V
M
V
La
*
V
CC
: TA8493AF/BF
V
M
: TA8493F
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TA8493BF | 3-PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD-ROM DRIVES |
| TA8493F | 3-PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD-ROM DRIVES |
| TA8504 | HIGH SPEED COMPARATOR |
| TA8504F | High Speed Comparator(高速比較器) |
| TA8680N | TA8680N |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TA8493BF | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:3-PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD-ROM DRIVES |
| TA8493F | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:3-PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD-ROM DRIVES |
| TA8496FL | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:Bipolar Linear Integrated Circuit Silicon Monolithic |
| TA8499F | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:3 PHASE FULL WAVE BRUSHLESS DC MOTOR DRIVER IC FOR CD/DVD ROM DRIVES |
| TA8504 | 制造商:TOSHIBA 制造商全稱:Toshiba Semiconductor 功能描述:HIGH SPEED COMPARATOR |
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