国产日韩精品欧美一区-国产日韩高清一区二区三区-国产日韩不卡免费精品视频-国产日产欧美精品一区二区三区-午夜国产精品免费观看-午夜国产精品理论片久久影院

設(shè)為主頁(yè)  加入收藏
 
·I2S數(shù)字功放IC/內(nèi)置DSP音頻算法功放芯片  ·馬達(dá)驅(qū)動(dòng)IC  ·2.1聲道單芯片D類(lèi)功放IC  ·內(nèi)置DC/DC升壓模塊的D類(lèi)功放IC  ·鋰電充電管理IC/快充IC  ·無(wú)線遙控方案  ·直流無(wú)刷電機(jī)驅(qū)動(dòng)芯片
當(dāng)前位置:首頁(yè)->技術(shù)分享
DRV8662平板電腦單片壓電觸摸屏驅(qū)動(dòng)解決方案
文章來(lái)源: 更新時(shí)間:2011/8/5 12:23:00
在線咨詢(xún):
給我發(fā)消息
李湘寧 2850985550
給我發(fā)消息
張代明 3003290139
給我發(fā)消息
鄢先輝 2850985542
13713728695
 

TI公司的DRV8662是集成了105V升壓開(kāi)關(guān),功率二極管和高壓和低壓壓電觸摸激勵(lì)器的單片壓電觸摸驅(qū)動(dòng)器,輸入信號(hào)可以是差分或單端,支持四種GPIO控制的增益: 28.8 dB, 34.8 dB, 38.4 dB和40.7 dB,工作電壓3.0 V 到5.5 V,并具有熱保護(hù)功能,主要用在手機(jī),手持游戲機(jī),PND和平板電腦.本文介紹了DRV8662主要特性,功能框圖,以及DRV8662EVM評(píng)估模塊主要特性和TI公司的平板電腦和電子書(shū)系統(tǒng)方框圖.
The DRV8662 is a single-chip piezo haptic driver with integrated 105 V boost switch, integrated power diode, and integrated fully-differential amplifier. This versatile device is capable of driving both high-voltage and low-voltage piezo haptic actuators. The input signal can be either differential or single-ended. The DRV8662 supports four GPIO-controlled gains: 28.8 dB, 34.8 dB, 38.4 dB, and 40.7 dB.
The boost voltage is set using two external resistors, and the boost current limit is programmable via the REXT resistor. The boost converter architecture will not allow the demand on the supply current to exceed the limit set by the REXT resistor; therefore, the DRV8662 is well-suited for portable applications.

DRV8662主要特性:
High-Voltage Piezo Haptic Driver
Drives up to 100 nF at 200 VPP and 300 Hz
Drives up to 330 nF at 100 VPP and 300 Hz
Drives up to 680 nF at 50 VPP and 300 Hz
Differential Output
Integrated Boost Converter
Adjustable Boost Voltage
Adjustable Current Limit
Integrated Power FET and Diode
No Transformer Required
Fast Start Up Time of 1.5 ms
Wide Supply Voltage Range of 3.0 V to 5.5 V
1.8 V Compatible Digital Pins
Thermal Protection
Available in a 4 mm × 4 mm × 0.9 mm QFN package (RGP)

DRV8662應(yīng)用:
Mobile Phones
Portable Gaming
Portable Navigation Devices
Tablet Devices

圖1.DRV8662框圖

DRV8662EVM評(píng)估模塊
The DRV8662EVM Evaluation Module (EVM) is a fully-differential, high-voltage piezo actuator driver that provides quick response time for single layer and multi-layer piezo actuators. The DRV8662 drives piezo loads up to 200 V differentially using an adjustable 100V integrated boost converter. The evaluation module contains the DRV8662RGP piezo haptics driver, a programmable MSP430, and passive components for complete evaluation. This document contains the EVM schematic, PCB, and BOM as well as instructions for operating the EVM.

圖2.DRV8662EVM評(píng)估模塊外形圖

DRV8662EVM評(píng)估模塊主要特性:
• High-voltage haptics driver
• Drives single-layer and multi-layer piezo actuators
• Adjustable 200V differential output
• A programmable MSP430 with sample waveforms and I2C input
• External PWM and analog inputs
• Wide supply voltage range from 3.0V to 5.5V

Texas Instruments (TI) offers a variety of semiconductor solutions for tablets and eBooks. The OMAP™ processor shown in the system diagram perfectly balances power and performance to give designers and end users an optimal multimedia solution. Also represented is an extensive array of solutions for tablets and eBooks that support wireless connectivity, video, audio and power management. The selection guide on the following page is a sampling of TI devices available to streamline your design process.

圖3.平板電腦和電子書(shū)系統(tǒng)方框圖

 
 
 
    相關(guān)產(chǎn)品  
 
 
·藍(lán)牙音箱的音頻功放/升壓/充電管
·單節(jié)鋰電內(nèi)置升壓音頻功放IC選型
·HT7179 12V升24V內(nèi)置
·5V USB輸入、三節(jié)鋰電升壓型
·網(wǎng)絡(luò)主播聲卡專(zhuān)用耳機(jī)放大IC-H
 
M12269 HT366 ACM8629 HT338 

業(yè)務(wù)洽談:手機(jī):13713728695(微信同號(hào))   QQ:3003207580  EMAIL:panbo@szczkjgs.com   聯(lián)系人:潘波

地址:深圳市寶安西鄉(xiāng)航城大道航城創(chuàng)新創(chuàng)業(yè)園A5棟307/309

版權(quán)所有:深圳市永阜康科技有限公司  備案號(hào):粵ICP備17113496號(hào)