參數(shù)資料
型號(hào)： FAN8741GX
廠商： FAIRCHILD SEMICONDUCTOR CORP
元件分類： 光電元器件
英文描述： Spindle Motor and 6-CH Driver
中文描述： CD MOTOR DRIVER, PDSO56
封裝： SSOP-56
文件頁(yè)數(shù)： 16/23頁(yè)
文件大?。?/td> 541K
代理商： FAN8741GX
16
www.fairchildsemi.com
FAN8741/FAN8742 Rev. 1.0.1
F
5. Reverse Rotation Prevention(Spindle)
1) As in the state of the forward rotation, the D-F/F output, Q is HIGH and the motor rotates normally. At this state, if the control
input is changed such that VREF>SPIN, then the motor rotates slowly by the reverse commutation in the driver. When the
motor begins to rotate in the reverse direction, the D-F/F output becomes Low and the OR Gate output becomes Low. This
prevents the motor from continuing to rotate in the reverse direction. This operation principle is shown in the following table
and flow chart.
Rotation
HV
HW
D-F/F
(Q)
Reverse Rotation Preventer
V
REF
<SPIN
Forward
V
REF
>SPIN
-
Forward
H
H
→
L
H
→
L
H
Reverse
L
L
-
Brake and Stop
+
-
+
-
+
-
Current
Sense
Amp
Gain
Controller
Driver
D-F/F
M
D
Q
CK
HW+
HW-
HV+
HV-
SPIN
VREF
A
Low Active
Forward rotation at VREF< SPIN
Rotating speed is decreased due to reverse torque at VREF>SPIN
and appropriate mute combination. (Motor still rotates forward)
At the moment that the motor rotates in reverse, the reverse rotation preventer makes
the output power stage equal to the short brake which is lower ,and three power transistors are fully turned on.
Motor rotates in reverse for short time due to motor inertia
Power stage remains in short brake scheme until forward rotation command is received.
相關(guān)PDF資料
PDF描述
FAN8741MTF Spindle Motor and 6-CH Driver
FAN8741MTFX Spindle Motor and 6-CH Driver
FAN8742G Spindle Motor and 6-CH Driver
FAN8742GX Spindle Motor and 6-CH Driver
FAN8742MTF Spindle Motor and 6-CH Driver
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
FAN8741MTF 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle Motor and 6-CH Driver
FAN8741MTFX 功能描述:IC PWM SPINDLE 6CH DRIVE 56TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 電機(jī)和風(fēng)扇控制器，驅(qū)動(dòng)器 系列:- 產(chǎn)品變化通告:ATA683(3,4)PLQW Obsolescence 09/Aug/2012 標(biāo)準(zhǔn)包裝:1 系列:- 應(yīng)用:DC 電機(jī)控制器，無(wú)刷（BLDC），3 相 評(píng)估套件:可供 輸出數(shù):1 電流 - 輸出:100mA 電壓 - 負(fù)載:5.25 V ~ 20 V 電源電壓:5.25 V ~ 20 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:48-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:48-VQFN（7x7） 包裝:剪切帶 (CT) 其它名稱:ATA6833-PLQWCT
FAN8742G 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle Motor and 6-CH Driver
FAN8742GX 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle Motor and 6-CH Driver
FAN8742MTF 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Spindle Motor and 6-CH Driver
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