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參數資料
| 型號： | FAN8725 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 光電元器件 |
| 英文描述： | Spindle Motor and 5-Channel Motor Driver(主軸電機和五通道電機驅動器) |
| 中文描述： | CD MOTOR DRIVER, PQFP52 |
| 封裝： | 14 X 14 MM, HEAT SINK, QFP-48 |
| 文件頁數： | 13/21頁 |
| 文件大小： | 210K |
| 代理商： | FAN8725 |
FAN8725 (KA3025)
13
4. TSD (THERMAL SHUTDOWN)
When the chip temperature rises up to about 175C(degree), the Q2 turns on and the output driver shuts down. When the chip
temperature falls off to about 150C(degree), then the Q2 turns off and the driver operates normally. TSD has the temperature
hysteresis of about 25C(degree).
-- The TSD circuit shuts down all the power drives(spindle and BTL power drives) excluding both CH1 and CH2 power
drives(actuator part).
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 is shown in the 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
ordered in H1
→
H2
→
H3 with a 120
°
phase difference.
Gain
Controller
BIAS
Q2
+
-
+
-
Vcc
DIR
D-F/F
D
Q
CK
H2+
H3+
H3-
H2-
Rotation
DIR
Forward
Low
Reverse
High
8
8
(a) Reverse rotation
H1
H2
H3
相關PDF資料 |
PDF描述 |
|---|---|
| FAN8727 | Spindle + 4-CH Motor Drive IC |
| FAN8728 | Spindle + 4-CH Input PWM Motor Drive IC |
| FAN8729 | Spindle+4-CH Motor Drive IC |
| FAN8729_NL | Spindle+4-CH Motor Drive IC |
| FAN8732BG | Spindle motor and 5-CH actuator driver [Spindle(PWM), Sled 2-CH(PWM) 3-CH(Linear)] |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FAN8727 | 功能描述:馬達/運動/點火控制器和驅動器 BTL Motor Drive IC 3Phase BLDCM+4CH RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8727_04 | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle + 4-CH Motor Drive IC |
| FAN8727_NL | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle + 4-CH Motor Drive IC |
| FAN8728 | 功能描述:馬達/運動/點火控制器和驅動器 BLDC+ 4Ch BTL Driver RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8729 | 功能描述:馬達/運動/點火控制器和驅動器 BLDC+4CH BTL RoHS:否 制造商:STMicroelectronics 產品:Stepper Motor Controllers / Drivers 類型:2 Phase Stepper Motor Driver 工作電源電壓:8 V to 45 V 電源電流:0.5 mA 工作溫度:- 25 C to + 125 C 安裝風格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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