Linear Technology’s DC/DC step-down μModule®regulators are complete switchmode power supplies in asurface-mount package. They include the DC/DC controller,inductor, power switches and supporting circuitry.These highly integrated regulators also provide an easysolution for applications that require negative outputvoltages. In other words, these products can operate asinverting buck-boost regulators. As a result, the lowestpotential in the circuit is not the standard 0V, but –VOUT,which must be tied to the μModule regulator’s GND. Allsignals are now referred to –VOUT.
上傳時間： 2013-10-22
上傳用戶：ztj182002
The voltage range of Linear Technology’s PowerPath® circuitscan be easily extended with just a few components, thusallowing them to meet the needs of virtually all applications.This application note presents solutions for circuits thatmust withstand large negative voltages, a reverse adapterinput for example, and circuits that must withstand largepositive inputs, such as automotive load-dump.
上傳時間： 2013-10-21
上傳用戶：幾何公差
Removing output capacitors saves money and boardspace. Linear Technology’s OPTI-LOOPTM architectureallows you to use the output capacitors of your choice andcompensate the control loop for optimum transientresponse and loop stability. Figure 1 shows the dramaticimprovement possible with the OPTI-LOOP architecture.With the improvement shown in Figure 1, less capacitance
上傳時間： 2013-12-15
上傳用戶：fanboynet
In an increasing trend, telecommunications, networking,audio and instrumentation require low noise power supplies.In particular, there is interest in low noise, lowdropout linear regulators (LDO). These components powernoise-sensitive circuitry, circuitry that contains noisesensitiveelements or both. Additionally, to conserve power,particularly in battery driven apparatus such as cellulartelephones, the regulators must operate with low input-tooutputvoltages.1 Devices presently becoming availablemeet these requirements (see separate section, “A Familyof 20mVRMS Noise, Low Dropout Regulators”).
上傳時間： 2013-10-30
上傳用戶：yeling1919
Linear Technology has a sabbatical program. Every fiveyears employees are granted sabbatical leave, which maylast up to six weeks. You have 18 months from each fiveyear employment anniversary to take the leave. Sabbaticalis fully company paid and has no restrictions. The time isyours to do with as you please.
上傳時間： 2013-10-19
上傳用戶：851197153
為解決直流逆變交流的問題，有效地利用能源，讓電源輸出最大功率，設計了高性能的基于IR2101最大功率跟蹤逆變器，并以SPMC75F2413A單片機作為主控制器。高電壓、高速功率的MOSFET或IGBT驅動器IR2101采用高度集成的電平轉換技術，同時上管采用外部自舉電容上電，能夠穩定高效地驅動MOS管。該逆變器可以實現DC/AC的轉換，最大功率點的跟蹤等功能。實際測試結果表明，該逆變器系統具有跟蹤能力強，穩定性高，反應靈敏等特點，該逆變器不僅可應用于普通的電源逆變系統，而且可應用于光伏并網發電的逆變系統，具有廣泛的市場前景。 Abstract: To solve the problem of DC-AC inverter， and to utilize solar energy more efficiently， the design of maximum power point tracking inverter based on IR2101 was achieved with a high-performance， which can make the system output power maximum. SPMC75F2413A was adopted as main controller. IR2101 is a high voltage， high speed power MOSFET and IGBT driver. It adopted highly integrated voltage level transforming technology， and an external bootstrap capacitor was used， which could drive MOS tube efficiently and stably. Many functions are achieved in the system， such as DC/AC conversion， maximun power point tracking， etc. The actual test result shows that the inverter system has characteristics of strong tracking ability， high stability and reacting quickly. The design can not only be used in ordinary power inverter system， but also be used in photovoltaic power inverter system. The design has certain marketing prospects
上傳時間： 2013-11-17
上傳用戶：lliuhhui
Sensing and/or controlling current flow is a fundamental requirement in many electronics systems, and the tech-niques to do so are as diverse as the applications them-selves. This Application Note compiles solutions to cur-rent sensing problems and organizes the solutions by general application type. These circuits have been culled from a variety of Linear Technology documents
標簽： 電流檢測電路
上傳時間： 2013-10-22
上傳用戶：moshushi0009
The latest generation of Texas Instruments (TI) boardmountedpower modules utilizes a pin interconnect technologythat improves surface-mount manufacturability.These modules are produced as a double-sided surfacemount(DSSMT) subassembly, yielding a case-less constructionwith subcomponents located on both sides of theprinted circuit board (PCB). Products produced in theDSSMT outline use the latest high-efficiency topologiesand magnetic-component packaging. This providescustomers with a high-efficiency, ready-to-use switchingpower module in a compact, space-saving package. Bothnonisolated point-of-load (POL) switching regulators andthe isolated dc/dc converter modules are being producedin the DSSMT outline.TI’s plug-in power product line offers power modules inboth through-hole and surface-mount packages. The surfacemountmodules produced in the DSSMT outline use asolid copper interconnect with an integral solder ball fortheir
上傳時間： 2013-10-10
上傳用戶：1184599859
加利福尼亞州米爾皮塔斯 (MILPITAS, CA) – 2009 年 8 月 31 日 – 凌力爾特公司 (Linear Technology Corporation) 推出隔離式 RS485 微型模塊 (uModule®) 收發器 LTM2881，該器件針對大的地至地差分電壓和共模瞬變提供了保護作用。在實際的 RS485系統中，各節點之間的地電位差異很大，常常超出可容許范圍，這有可能導致通信中斷或收發器受損。LTM2881 運用內部感應信號隔離來對邏輯電平接口和線路收發器實施隔離，以中斷接地環路，從而實現了大得多的共模電壓范圍和 >30kV/μs 的卓越共模抑制性能。一個低 EMI DC-DC 轉換器負責向收發器供電，并提供了一個用于給任何外部支持元件供電的 5V 隔離電源輸出。憑借 2,500VRMS 的電流隔離、板上輔助電源和一個完全符合標準的 RS485 發送器和接收器，LTM2881 不需要使用外部元件，從而確保了一款適合隔離串行數據通信的完整、小型μModule 解決方案。
上傳時間： 2013-10-25
上傳用戶：ljj722
Microchip 單片機的速度和復雜性已經到達足以要 求降低電源電壓的程度，并正在向 5V 電源電壓以 下轉換。但問題是絕大多數接口電路仍然是為 5V 電源而設計的。這就意味著，作為設計人員，我們 現在面臨著連接 3.3V 和 5V 系統的任務。此外， 這個任務不僅包括邏輯電平轉換，同時還包括為 3.3V 系統供電、轉換模擬信號使之跨越 3.3V/5V 的 障礙。 技巧和訣竅 DS41285A_CN 第 2 頁 . 2006 Microchip Technology Inc. 本 《技巧和訣竅》提供了一些電源供電組件、數 字電平轉換組件甚至模擬轉換組件，以解決所面臨 的挑戰。全書對每種轉換均給出了多種選擇方案， 從單片 （All-in-One）接口器件到低成本的分立解 決方案都有涉及。簡而言之，無論導致轉換的原因 是復雜性、成本還是尺寸，設計人員處理 3.3V 挑 戰可能需要的全部組件均在本文有所討論。
上傳時間： 2013-10-30
上傳用戶：wqxstar
