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參數(shù)資料
| 型號(hào)： | 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(jī)和五通道電機(jī)驅(qū)動(dòng)器) |
| 中文描述： | CD MOTOR DRIVER, PQFP52 |
| 封裝： | 14 X 14 MM, HEAT SINK, QFP-48 |
| 文件頁數(shù)： | 18/21頁 |
| 文件大?。?/td> | 210K |
| 代理商： | FAN8725 |
FAN8725 (KA3025)
18
12. BTL DRIVE PART
The reference voltage REF is given externally through pin 42.
The error amp output signal is amplified by R2 / R1 times and then fed to the power amp circuit.
The power amp circuit produces the differential output voltages and drives the two output power amplifier circuit.
Since the differential gain of the output amplifiers of CH1/CH2 is equal to 2
×
(25K / 10K) , the output signal of the error
amp is amplified by (R2 / R1)
×
5.
Since the differential gain of the output amplifiers of CH3/CH4/CH5 is equal to 2
×
(40K / 10K) , the output signal of the
error amp is amplified by (R2 / R1)
×
8.
If the total gain is insufficient, the input error amp can be used to increase the gain.
The CH1/CH2 are generally used as actuator drive circuit so this channels are not affected by TSD circuit.
+
+
+
+
M
42
Vref
18 20 22
R1
R2
1
25K
(40K)
Power amp
24 39
17 19 21 24 38
+
R
R
VM2
(VM3)
25K
(40K)
25K
(40K)
25K
(40K)
1
1
1
VM2
(VM3)
DO+26 28 31 33 35
27 29 32 34 36
DO
Error
Amp
23 40
相關(guān)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(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FAN8727 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 BTL Motor Drive IC 3Phase BLDCM+4CH RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)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(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 BLDC+ 4Ch BTL Driver RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
| FAN8729 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 BLDC+4CH BTL RoHS:否 制造商:STMicroelectronics 產(chǎn)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(fēng)格:SMD/SMT 封裝 / 箱體:HTSSOP-28 封裝:Tube |
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