The STi7105 uses state of the art process technology to provide an ultra low-cost, fully featured HD AVC decoder IC. It is a highly integrated system-on-chip suitable for STB markets across all networks (cable/satellite/DTT/x- DSL/IP) worldwide
標簽: technology low-cost featured process
上傳時間: 2013-12-22
上傳用戶:時代電子小智
本備忘錄說明了OSPF協議版本2。OSPF是一種連接狀態/link-state路由協議,被設計用于單一的自制系統/Autonomous System中。每個OSPF路由器都維持著同樣的數據庫以描述AS的拓撲結構,并以此數據庫來創建最短路徑樹并計算路由表。
標簽: OSPF link-state 協議 版本
上傳時間: 2017-09-19
上傳用戶:youlongjian0
隨著社會的發展以及能源、環保等問題的日益突出,純電動汽車以其零排放,噪聲低等優點越來越受到世界各國的重視,被稱作綠色環保車。作為發展電動車的關鍵技術之一的電池管理系統(BMS),是電動車產業化的關鍵。本課題配合“基于開關磁阻電機的電動汽車的研制”,研制適用于純電動汽車的電池管理系統。 電池管理系統直接檢測及管理電動汽車的儲能電池運行的全過程,包括電池基本信息測量、電量估計、單體電池間的均衡、電池故障診斷幾個方面。 本論文主要工作是研制適用于純電動汽車的蓄電池管理系統。研究鉛酸蓄電池二階模型的建立與剩余容量的卡爾曼濾波估算方法。分析鉛酸蓄電池的基本工作原理和影響蓄電池組剩余容量SOC(state of charge)的主要因素。 介紹了基于DSP2407的蓄電池組控制器的硬件平臺,完成DSP小系統、電池數據采集電路、信號調理電路、CAN總線相關電路等硬件電路設計、調試、完善。獨立完成系統所有軟件設計,包括:主程序設計,電池基本信息檢測子程序設計,電池剩余電量卡爾曼濾波估算程序設計,電池狀態檢測子程序設計,CAN收發子程序設計,EEPROM讀寫子程序設計。 最后,在電動汽車上搭建實驗平臺,將鉛酸蓄電池組與設計的軟硬件系統聯合進行調試、試驗。測得了相關數據。試驗結果表明,本文介紹的電池管理系統硬件電路可靠、經濟、抗干擾能力強。可以實現:電池電壓、電流、溫度的模擬量采集;剩余電量的計算和電池狀態的判斷;實時顯示,故障時報警等BMS相關功能。
上傳時間: 2013-06-11
上傳用戶:hustfanenze
并行總線PATA從設計至今已快20年歷史,如今它的缺陷已經嚴重阻礙了系統性能的進一步提高,已被串行ATA(Serial ATA)即SATA總線所取代。SATA作為新一代磁盤接口總線,采用點對點方式進行數據傳輸,內置數據/命令校驗單元,支持熱插拔,具有150MB/s(SATA1.0)或300MB/s(SATA2.0)的傳輸速度。目前SATA已在存儲領域廣泛應用,但國內尚無獨立研發的面向FPGA的SATAIP CORE,在這樣的條件下設計面向FPGA應用的SATA IP CORE具有重要的意義。 本論文對協議進行了詳細的分析,建立了SATA IP CORE的層次結構,將設備端SATA IP CORE劃分成應用層、傳輸層、鏈路層和物理層;介紹了實現該IPCORE所選擇的開發工具、開發語言和所選用的芯片;在此基礎上著重闡述協議IP CORE的設計,并對各個部分的設計予以分別闡述,并編碼實現;最后進行綜合和測試。 采用FPGA集成硬核RocketIo MGT(RocketIo Multi-Gigabit Transceiver)實現了1.5Gbps的串行傳輸鏈路;設計滿足協議需求、適合FPGA設計的并行結構,實現了多狀態機的協同工作:在高速設計中,使用了流水線方法進行并行設計,以提高速度,考慮到系統不同部分復雜度的不同,設計采用部分流水線結構;采用在線邏輯分析儀Chipscope pro與SATA總線分析儀進行片上調試與測試,使得調試工作方便快捷、測試數據準確;嚴格按照SATA1.0a協議實現了SATA設備端IP CORE的設計。 最終測試數據表明,本論文設計的基于FPGA的SATA IP CORE滿足協議需求。設計中的SATA IP CORE具有使用方便、集成度高、成本低等優點,在固態電子硬盤SSD(Solid-State Disk)開發中應用本設計,將使開發變得方便快捷,更能夠適應市場需求。
上傳時間: 2013-06-21
上傳用戶:xzt
英文描述: OCTAL BUFFER/LINE DRIVERS WITH 3-STATE OUTPUT(NONINVERTED) 中文描述: 八路緩沖器/線路驅動器具有三態輸出(NONINVERTED)
上傳時間: 2013-04-24
上傳用戶:chengli008
Recently a new technology for high voltage Power MOSFETshas been introduced – the CoolMOS™ . Based on thenew device concept of charge compensation the RDS(on) areaproduct for e.g. 600V transistors has been reduced by afactor of 5. The devices show no bipolar current contributionlike the well known tail current observed during the turn-offphase of IGBTs. CoolMOS™ virtually combines the lowswitching losses of a MOSFET with the on-state losses of anIGBT.
標簽: COOLMOS
上傳時間: 2013-11-14
上傳用戶:zhyiroy
Integrated EMI/Thermal Design forSwitching Power SuppliesWei ZhangThesis submitted to the Faculty of theVirginia Polytechnic Institute and State Universityin partial fulfillment of the requirements for the degree of Integrated EMI/Thermal Design forSwitching Power SuppliesWei Zhang(ABSTRACT)This work presents the modeling and analysis of EMI and thermal performancefor switch power supply by using the CAD tools. The methodology and design guidelinesare developed.By using a boost PFC circuit as an example, an equivalent circuit model is builtfor EMI noise prediction and analysis. The parasitic elements of circuit layout andcomponents are extracted analytically or by using CAD tools. Based on the model, circuitlayout and magnetic component design are modified to minimize circuit EMI. EMI filtercan be designed at an early stage without prototype implementation.In the second part, thermal analyses are conducted for the circuit by using thesoftware Flotherm, which includes the mechanism of conduction, convection andradiation. Thermal models are built for the components. Thermal performance of thecircuit and the temperature profile of components are predicted. Improved thermalmanagement and winding arrangement are investigated to reduce temperature.In the third part, several circuit layouts and inductor design examples are checkedfrom both the EMI and thermal point of view. Insightful information is obtained.
上傳時間: 2013-11-10
上傳用戶:1595690
The LTC®3562 quad output step-down regulator is designedfor multicore handheld microprocessor applications thatoperate from a single Li-Ion battery. Its four monolithic, higheffi ciency buck regulators support Intel’s mobile CPU P-Stateand C-State energy saving operating modes. The outputvoltages are independently controllable via I2C, and eachoutput can be independently started and shut down. Designerscan choose from power saving pulse-skipping mode orBurst Mode® operation, or select low noise LDO mode. Thespace-saving LTC3562 is available in a 3mm × 3mm QFNpackage and requires few external components.
上傳時間: 2013-10-07
上傳用戶:1583060504
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.
上傳時間: 2013-11-23
上傳用戶:新手無憂
該應用報告描述了旋轉檢測器的實現,該旋轉檢測器使用一對可檢測磁場的巨磁阻GMR(Giant Magneto-Resistive,)傳感器。傳感器的分布使它們不使用正交信號序列,這提供了討論非正交情況如何配置SIF的機會。討論了調試SIF應用程序的技術,提供了一個設計非正交進程狀態機(processing state machines)的工具。
上傳時間: 2013-10-21
上傳用戶:sammi