- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383235 > L6232E (意法半導(dǎo)體) Spindle Driver(主軸驅(qū)動(dòng)器) PDF資料下載
參數(shù)資料
| 型號(hào)： | L6232E |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Spindle Driver(主軸驅(qū)動(dòng)器) |
| 中文描述： | 主軸驅(qū)動(dòng)器（主軸驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 5/10頁(yè) |
| 文件大?。?/td> | 113K |
| 代理商： | L6232E |
FUNCTIONAL
Block Diagram)
The commutation sequence is provided by the
user via six inputs. INUA,INUB,INUC turn on the
three upper DMOS drivers when held at logic
LOW, and inputs INLA,INLB,INLC turn on the
three lower DMOS drivers when held at logic
HIGH.
The BRK and BRK DLY inputs offer flexibility to
the system designer in the implementation of the
braking function. The BRK logic input, when
pulled low will turn-off all upper and lower Dmos
drivers. The low transition at BRK will produce a
delayed negativetransition at the BRK DLY input,
configurable by connection of a capacitor Cd and
a resistor Rd from the BRK DLY pin to ground.
The negative transition at BRK DLY will initiate
the braking of the motor by turning on all lower
Dmos, while keeping all upper DMOS turned-off.
This feature provides a time interval where the
motor BEMF can be used to power the head
parking function before the braking procedure is
iniziated. External detection of the supply(VP)
drop-off is necessary to provide the appropriate
logic signal to the BRK input. (see Fig. 1)
The brake function utilizes the energy stored in
the central charge pump capacitor(Cp) to turn-on
or turn-off the DMOS drivers.
completion of the braking procedure after the VP
supply has powereddown.
The L6232E is capable of driving the motor in
either pulse width modulation (PWM) or linear
DESCRIPTION
(Refer to the
This allows for
(LIN) mode. The driving mode is determined by
the smaller of two analog voltages inputs, LIN
Vref and PWM Vref. The motor current is control-
led by LIN Vref and PWM Vref and the current
sense resistor Rs connected to the SENSE out-
put. The SENSE output provides for connectionof
a resistor in series with the source of all lower
DMOS drivers. The voltage at this pin provides
the error signal wich is utilized internally to regu-
late the motor current Im. The current in both
PWM and linear mode is determined by the ex-
pression:
I
m
=
G
V
R
S
V
ref
in wich Gv is the voltage gain of the sense ampli-
fier. In linear mode, the current is regulated by a
linear control loop wich drives the lower DMOS.
Compensation of the linear control loop is
achieved by connection of a series network
(Rc,Cc) from the transconductanceamplifier out-
put (Gm) and ground. Control is passed to each
lower DMOS in succession during the commuta-
tion sequence(MPX).
The rate at which the upper and lower drivers
turns-off during linear mode operation is configur-
able externally by the value of the resistor R used
at the RC pin. This defines a current which is util-
ized internally to limit the voltage slew-rate at the
outputs during transitions. The output slew-rate is
internally adjusted for fast slewing during PWM
operation to reduce losses, and a relatively
slower rate during linear mode operation to mini-
Figure 1:
BrakeDelay and Braking timing of the L6232E.At the timet1 a VPPowerdownthreshold
detectordrives low the BRK input; at time t2 the Charge Pump voltage becomesinadequate
to maintainON the lower DMOS.
L6232E
5/10
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| L6234 | Three Phase Motor Driver(三相電機(jī)驅(qū)動(dòng)器) |
| L6237 | 5V Spindle Motor Driver(5V主軸電機(jī)驅(qū)動(dòng)器) |
| L6238S | 12V Sensorless Spindle Motor Controller(主軸馬達(dá)控制器) |
| L6238 | Sensorless Spindle Motor Driver(無(wú)傳感器主軸電機(jī)驅(qū)動(dòng)器) |
| L6239 | 12V Disk Drive Spindle Driver(12V磁盤驅(qū)動(dòng)主軸驅(qū)動(dòng)器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L6233 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| L6233P | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| L6234 | 功能描述:馬達(dá)/運(yùn)動(dòng)/點(diǎn)火控制器和驅(qū)動(dòng)器 Three Phase Motor 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 |
| L6234 | 制造商:STMicroelectronics 功能描述:IC HALF BRIDGE DRIVER TRIPLE 6234 |
| L6234D | 制造商:STMicroelectronics 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。