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project paineis projecto ed

project paineis projecto ed

標簽： projecto project paineis ed

上傳時間： 2014-11-29

上傳用戶：蟲蟲蟲蟲蟲蟲
The Verilog Hardware Description Language, 5th ed

The Verilog Hardware Description Language, 5th ed

標簽： Verilog

上傳時間： 2018-04-15

上傳用戶：MagicJ
變壓器計算及磁芯對照表增加ed和edR磁芯

變壓器計算及磁芯對照表增加ed和edR磁芯特別是磁芯型號非常齊全，有尺寸及部分參考設計功率，很好用，歡迎下載學習交流

標簽： 變壓器磁芯

上傳時間： 2021-12-10

上傳用戶：
基于SDR Sdram(同步動態RAM) 作為主存儲器的Led 顯示系統的研究

針對主控制板上存儲器(SRAM) 存儲的數據量小和最高頻率低的情況,提出了基于SDR Sdram(同步動態RAM) 作為主存儲器的Led 顯示系統的研究。在實驗中,使用了現場可編程門陣列( FPGA) 來實現各模塊的邏輯功能。最終實現了對L ed 顯示屏的控制,并且一塊主控制板最大限度的控制了256 ×128 個像素點,基于相同條件,比靜態內存控制的面積大了一倍,驗證了動態內存核[7 ]的實用性。

標簽： Sdram SDR RAM Led

上傳時間： 2013-08-21

上傳用戶：sjw920325
二極管導通開關穩壓器引發的故障時間

Most circuit designers are familiar with diode dynamiccharacteristics such as charge storage, voltage dependentcapacitance and reverse recovery time. Less commonlyacknowledged and manufacturer specifi ed is diode forwardturn-on time. This parameter describes the timerequired for a diode to turn on and clamp at its forwardvoltage drop. Historically, this extremely short time, unitsof nanoseconds, has been so small that user and vendoralike have essentially ignored it. It is rarely discussed andalmost never specifi ed. Recently, switching regulator clockrate and transition time have become faster, making diodeturn-on time a critical issue. Increased clock rates aremandated to achieve smaller magnetics size; decreasedtransition times somewhat aid overall effi ciency but areprincipally needed to minimize IC heat rise. At clock speedsbeyond about 1MHz, transition time losses are the primarysource of die heating.

標簽： 二極管導通開關穩壓器

上傳時間： 2013-10-10

上傳用戶：誰偷了我的麥兜
LT1017：Circuitry for Single Cell Operation

Portable, battery-powered operation of electronic apparatushas become increasingly desirable. Medical, remotedata acquisition, power monitoring and other applicationsare good candidates for battery operation. In some circumstances,due to space, power or reliability considerations,it is preferable to operate the circuitry from a single 1.5Vcell. Unfortunately, a 1.5V supply eliminates almost alllinear ICs as design candidates. In fact, the LM10 opamp-reference and the LT®1017/LT1018 comparators arethe only IC gain blocks fully specifi ed for 1.5V operation.Further complications are presented by the 600mV dropof silicon transistors and diodes. This limitation consumesa substantial portion of available supply range, makingcircuit design diffi cult. Additionally, any circuit designedfor 1.5V operation must function at end-of-life batteryvoltage, typically 1.3V. (See Box Section, “Componentsfor 1.5V Operation.”)

標簽： Circuitry Operation Single 1017

上傳時間： 2013-12-20

上傳用戶：Wwill
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·
符合AMC和MicroTCA標準的熱插拔解決方案

The LTC®4223 is a dual Hot Swap™ controller that meetsthe power requirements of the Micro TelecommunicationComputing Architecture (MicroTCA) specifi cation recentlyratifi ed by the PCI Industrial Computer ManufacturersGroup (PICMG).

標簽： MicroTCA AMC 標準方案

上傳時間： 2013-10-21

上傳用戶：fengzimili
DN458降壓轉換器簡化低電壓設計

Many system designers need an easy way to producea negative 3.3V power supply. In systems that alreadyhave a transformer, one option is to swap out the existingtransformer with one that has an additional secondarywinding. The problem with this solution is that manysystems now use transformers that are standard, offthe-shelf components, and most designers want toavoid replacing a standard, qualifi ed transformer with acustom version. An easier alternative is to produce thelow negative voltage rail by stepping down an existingnegative rail. For example, if the system already employsan off-the-shelf transformer with two secondary windingsto produce ±12V, and a –3.3V rail is needed, a negativebuck converter can produce the –3.3V output from the–12V rail.

標簽： 458 DN 降壓轉換器低電壓

上傳時間： 2013-10-09

上傳用戶：Jerry_Chow
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