- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄385933 > TLS2230 (Texas Instruments, Inc.) Servo-Combination Predriver(伺服-組合預(yù)驅(qū)動(dòng)器) PDF資料下載
參數(shù)資料
| 型號(hào)： | TLS2230 |
| 廠(chǎng)商： | Texas Instruments, Inc. |
| 英文描述： | Servo-Combination Predriver(伺服-組合預(yù)驅(qū)動(dòng)器) |
| 中文描述： | 伺服組合預(yù)驅(qū)動(dòng)器（伺服-組合預(yù)驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 3/11頁(yè) |
| 文件大?。?/td> | 265K |
| 代理商： | TLS2230 |
TLS2230
SERVO-COMBINATION PREDRIVER
SQHS017 – MAY 1996
3
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
VCM drive
The TLS2230 uses either a pulse-width modulated (PWM) or linear input voltage to control the current applied
to the VCM. A set of precision buffers provides input scaling for two separate PWM inputs that, when used
together, can provide increased resolution. The bandwidth of the low-pass filter is determined by external
components and is matched to the PWM digital-to-analog converter (DAC) being used. If linear voltage control
is desired, the PWM buffers and the low-pass filter function are bypassed, and the control signal is applied
directly to the error amplifier. The error amplifier compensates for the transconductance loop. Its output
represents the difference between the command current and the actual current. The actual current is measured
across the RSEN resistor by the sense amplifier. The compensated output of the error amplifier is applied to
the VCM predrive circuit that biases the VCM power field-effect transistors (FETs) of the TPIC150x for class
AB operation.
spindle-motor drive
The spindle motor is started under PWM control using an external signal for forced commutation. As the motor
approaches operational speed, the commutation state machine is driven by the output of the voltage-controlled
oscillator (VCO). The VCO utilizes the back electromotive force (EMF) of the motor to close a phase-locked loop,
matching the commutation frequency to the motor. Once in the run mode, the motor speed can be controlled
using either a PWM signal to modulate the current applied to the motor or by a linear current command that acts
as the input to the spindle-transconductance loop.
support functions
The TLS2230 support functions include a voltage monitor that indicates a fault when power supply voltages are
out of tolerance. When triggered, this fault signal initiates a VCM retract and delayed braking of the spindle
motor. Other support functions include the reference-voltage buffers and the charge pump. The reference
voltages are supplied to several on-chip requirements and provide an external 2
×
VREF output. The charge
pump generates 25 V for driving the TPIC150x N-channel DMOS H-bridge drivers.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| TLS24302 | Magnetoresistive/Thin-Film Read/Write Preamplifiers(2通道磁阻/薄膜讀/寫(xiě)用前置放大器) |
| TLS24306 | Magnetoresistive/Thin-Film Read/Write Preamplifiers(6通道磁阻/薄膜讀/寫(xiě)用前置放大器) |
| TLS24308 | Magnetoresistive/Thin-Film Read/Write Preamplifiers(8通道磁阻/薄膜讀/寫(xiě)用前置放大器) |
| TLS24310 | Magnetoresistive/Thin-Film Read/Write Preamplifiers(10通道磁阻/薄膜讀/寫(xiě)用前置放大器) |
| TLS24318 | Magnetoresistive/Thin-Film Read/Write Preamplifiers(8通道磁阻/薄膜讀/寫(xiě)用前置放大器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TLS2231CDLR | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TLS2232DLR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TLS2233DLR | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| TLS2237DLR | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| TLS2246DCAR | 制造商:Texas Instruments 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。