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參數(shù)資料
| 型號(hào)： | FAN8423D3TF |
| 廠(chǎng)商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類(lèi)： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | 3-Phase BLDC Motor Driver |
| 中文描述： | BRUSHLESS DC MOTOR CONTROLLER, 1.3 A, PDSO30 |
| 封裝： | 0.375 INCH, HEAT SINK, SSOP-28 |
| 文件頁(yè)數(shù)： | 10/18頁(yè) |
| 文件大?。?/td> | 249K |
| 代理商： | FAN8423D3TF |
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FAN8423D3
10
Rev. 1.0.1
Oct. 2000.
4. Tsd (Thermal Shutdown)
When the chip temperature rises up to about 175
°
C, the Q2 turns on so that the output driver shuts down. When the chip tem-
perature falls off to about 150
°
C, then the Q2 turns off so that the driver is to operate normally. TSD has the temperature hys-
teresis of about 25
°
C.
5. Rotational Direction Detection
1) The forward and the reverse rotations of the CD are detected by using the D-F/F and the truth table as shown above.
2) The rotational direction of the CD can be explained by the output waveform of the Hall sensors. Let the three outputs of
Hall sensors be H1, H2 and H3 respectively.
When the spindle rotates in reverse direction, the Hall sensor output waveform are shown in Fig.(a). Thus the phases are in
order H1
→
H2
→
H3 with a 120
°
phase difference.
On the other hand, if the spindle rotates in forward rotation, the phase relationship is H3
→
H2
→
H1 as shown in Fig.(b)
Gain
Controller
BIAS
Q2
20
+
-
+
-
Vcc
DIR
D-F/F
D
Q
CK
H2+
H3+
H3-
H2-
Rotation
DIR
20
Forward
Low
Reverse
High
(a) Reverse rotation
H1
H2
H3
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| FAN8423D3 | 3-Phase BLDC Motor Driver |
| FAN8423D | 3-Phase BLDC Motor Driver(三相無(wú)刷直流電機(jī)驅(qū)動(dòng)器) |
| FAN8434 | Camcorder 3 in 1 Motor Driver |
| FAN8434X | Camcorder 3 in 1 Motor Driver |
| FAN8434X_NL | Camcorder 3 in 1 Motor Driver |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN8423DTF | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:DC Motor Controller/Driver |
| FAN8434 | 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:Camcorder 3 in 1 Motor Driver |
| FAN8434_NL | 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:Camcorder 3 in 1 Motor Driver |
| FAN8434X | 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:Camcorder 3 in 1 Motor Driver |
| FAN8434X_NL | 制造商:FAIRCHILD 制造商全稱(chēng):Fairchild Semiconductor 功能描述:Camcorder 3 in 1 Motor Driver |
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