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Time-Delay

  • 基于RTW的三電平雙PWM變換器控制系統設計

    此提出了一種基于Matlab/Simulink及實時代碼生成工具R哪(Real.Time Workshop)的電力電子與電力傳動控制系統軟件的設計方法。首先在Simulink下搭建控制系統模型,進行相應仿真完善,驗證控制算法,根據目標DSP型號添加相應DSP內核、外設并設置控制參數,然后直接將模型轉化為相應DSP的C源代碼.在相應的硬件平臺支持下即可完成相關實驗。

    標簽: RTW PWM 三電平 變換器控制

    上傳時間: 2013-11-04

    上傳用戶:wincoder

  • 100-15V TO 12V DCDC 原理圖 PCB BOM表

    高的工作電壓高達100V N雙N溝道MOSFET同步驅動 The D810DCDC is a synchronous step-down switching regulator controller that can directly step-down voltages from up to 100V, making it ideal for telecom and automotive applications. The D810DCDC uses a constant on-time valley current control architecture to deliver very low duty cycles with accurate cycle-by-cycle current limit, without requiring a sense resistor. A precise internal reference provides 0.5% DC accuracy. A high bandwidth (25MHz) error amplifi er provides very fast line and load transient response. Large 1Ω gate drivers allow the D810DCDC to drive multiple MOSFETs for higher current applications. The operating frequency is selected by an external resistor and is compensated for variations in VIN and can also be synchronized to an external clock for switching-noise sensitive applications. Integrated bias control generates gate drive power from the input supply during start-up and when an output shortcircuit occurs, with the addition of a small external SOT23 MOSFET. When in regulation, power is derived from the output for higher effi ciency.

    標簽: DCDC 100 12V BOM

    上傳時間: 2013-10-24

    上傳用戶:wd450412225

  • DN1014同步降壓型控制器在汽車應用中的電池壽命延長

      Battery powered applications that have a signifi cantamount of time in standby mode, require electrical circuitsto operate with a low quiescent current to preserve batterylife. The LTC3835 synchronous step-down controlleris an excellent solution with its ultralow quiescent current(80μA). Other features make it uniquely qualifi ed tosatisfy the needs of automotive applications. A wide 4Vto 36V input voltage range protects the supply againsthigh input voltage transients and is compatible with lowvoltage cold crank conditions. The constant frequencycurrent-mode architecture with high-side inductor current

    標簽: 1014 DN 同步降壓型 控制器

    上傳時間: 2013-11-20

    上傳用戶:stewart·

  • DN428微型同步升壓轉換器

      Alkaline batteries are convenient because they’re easy tofi nd and relatively inexpensive, making them the powersource of choice for portable instruments and devicesused for outdoor recreation. Their long shelf life alsomakes them an excellent choice for emergency equipmentthat may see infrequent use but must be ready to go on amoment’s notice. It is important that the DC/DC convertersin portable devices operate over the widest possiblebattery voltage range to extend battery run time, and thussave the user from frequent battery replacement.

    標簽: 428 DN 同步升壓 轉換器

    上傳時間: 2014-12-24

    上傳用戶:569342831

  • DN465 超低功耗升壓轉換器

      Industrial remote monitoring systems and keep-alivecircuits spend most of their time in standby mode. Manyof these systems also depend on battery power, so powersupply effi ciency in standby state is very important tomaximize battery life. The LT®8410/-1 high effi ciencyboost converter is ideal for these systems, requiringonly 8.5μA of quiescent current in standby mode. Thedevice integrates high value (12.4M/0.4M) output feedbackresistors, signifi cantly reducing input current whenthe output is in regulation with no load. Other featuresinclude an integrated 40V switch and Schottky diode,output disconnect with current limit, built in soft-start,overvoltage protection and a wide input range, all in atiny 8-pin 2mm × 2mm DFN package.

    標簽: 465 DN 超低功耗 升壓轉換器

    上傳時間: 2013-11-23

    上傳用戶:新手無憂

  • DN457寬輸入電壓范圍同步降壓穩壓器

      The LTC®3610 is a high power monolithic synchronousstep-down DC/DC regulator that can deliver up to 12Aof continuous output current from a 4V to 24V (28Vmaximum) input supply. It is a member of a high currentmonolithic regulator family (see Table 1) that featuresintegrated low RDS(ON) N-channel top and bottomMOSFETs. This results in a high effi ciency and highpower density solution with few external components.This regulator family uses a constant on-time valleycurrent mode architecture that is capable of operatingat very low duty cycles at high frequency and with veryfast transient response. All are available in low profi le(0.9mm max) QFN packages.

    標簽: 457 DN 同步降壓

    上傳時間: 2013-11-07

    上傳用戶:moerwang

  • LTC4099 USB電源管理和電池充電

      The LTC®4099 high effi ciency USB power manager andLi-Ion/Polymer battery charger seamlessly managespower distribution from multiple sources in portableapplications. It is differentiated from other USB powermanagers by its bidirectional I2C port that allows the hostmicroprocessor to control and monitor all aspects of theUSB power management and battery charging processes.In addition, a programmable interrupt generation functionalerts the host microprocessor to changes in device statusand provides unprecedented control of power managementfunctions. This high degree of confi gurability allowspost-layout changes in operation, even changes in thefi eld, and it allows a single qualifi ed device to be usedin a variety of products, thus reducing design time andeasing inventory management.

    標簽: 4099 LTC USB 電源管理

    上傳時間: 2013-10-22

    上傳用戶:18602424091

  • 測量和控制電路的熱管理技術

      Designers spend much time combating thermal effects incircuitry. The close relationship between temperature andelectronic devices is the source of more design headachesthan any other consideration.

    標簽: 測量 控制電路 管理技術

    上傳時間: 2013-10-17

    上傳用戶:風之驕子

  • 信號源,調節器和電源電路分析

      Occasionally, we are tasked with designing circuitry for aspecific purpose. The request may have customer originsor it may be an in-house requirement. Alternately, a circuitmay be developed because its possibility is simply tooattractive to ignore1. Over time, these circuits accumulate,encompassing a wide and useful body of proven capabilities.They also represent substantial effort. These considerationsmake publication an almost obligatory propositionand, as such, a group of circuits is presented here. This isnot the first time we have displayed such wares and, giventhe encouraging reader response, it will not be the last2.Eighteen circuits are included in this latest effort, roughlyarranged in the categories given in this publication’s title.They appear at the next paragraph.

    標簽: 信號源 調節器 電源 電路分析

    上傳時間: 2013-11-12

    上傳用戶:012345

  • P54C-VR奔騰(R)微處理器的電源模塊

      Providing power for the Pentium® microprocessor family isnot a trivial task by any means. In an effort to simplify thistask we have developed a new switching regulator controlcircuit and a new linear regulator to address the needs ofthese processors. Considerable time has been spent developingan optimized decoupling network. Here are severalcircuits using the new LTC®1266 synchronous buck regulatorcontrol chip and the LT®1584 linear regulator toprovide power for Pentium processors and Pentium VREprocessors. The Pentium processor has a supply requirementof 3.3V ±5%. The Pentium VRE processor requires3.500V ±100mV.

    標簽: C-VR 54 奔騰 微處理器

    上傳時間: 2013-11-01

    上傳用戶:名爵少年

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