電源/新能源
提供權(quán)威的電源和新能源設(shè)計及電源管理資訊，內(nèi)容有醫(yī)療/工業(yè)電源、LED驅(qū)動、數(shù)字電源、電池技術(shù)、太陽能光伏等電源技術(shù)方案，包括電源測試/仿真/認(rèn)證、便攜電源、電動車/新能源、AC-DC與DC-DC轉(zhuǎn)換、基準(zhǔn)/監(jiān)控/保護(hù)電路等專業(yè)領(lǐng)域。
高側(cè)電流檢測的測量：集成電路和原則-High-Side Cu
Abstract: This application note describes the use of current sense amplifiers, differential amplifiers and instrumentation amplifiers to measure battery charge and discharge currents in portable equipment, computer notebooks and USB access...
2009-05-04 標(biāo)簽：集成電路 1783
直流轉(zhuǎn)換無電感器-DC/DC Conversion with
Abstract: Charge pumps are often the best choice for powering an application requiring a combination of low power and low cost. This article discusses the integrated charge pumps available in the market today. It also explains how to calcu...
2009-05-04 標(biāo)簽：Conversion 1684
高效率升壓轉(zhuǎn)換器提供24V的終端-High-Efficien
Data terminal equipment (DTE), such as wireless LAN and wireless local loop, may require data and power on the same cable. A high voltage power source of 24V is required to reduce the voltage drop in the cable. Isolation is provide...
2009-05-04 標(biāo)簽：轉(zhuǎn)換器 876
高效率升壓轉(zhuǎn)換器提供48V的IP電話-High-Effici
IP phones require that data and power on the same cable. A high voltage power source of 48V is required, to reduce the voltage drop in the cable. This application note describes a DC-DC step-up converter that can deliver the required 48V s...
2009-05-04 標(biāo)簽：轉(zhuǎn)換器 1168
升壓控制器形式負(fù)降壓穩(wěn)壓-Step-Up Controlle
Positive step-down switching regulators are common, but the complementary negative step-down function (converting a negative voltage to a smaller negative voltage) is rare by comparison. Figure 1 shows a negative step-down switchin...
2009-05-04 標(biāo)簽：控制器 803
過電壓保護(hù)汽車系統(tǒng)-Overvoltage Protecti
Abstract: Vehicle electronics system components such as sensors and actuators require protection against over voltage, transient voltage and reverse voltage conditions. This application note discusses some discrete circuit protection schem...
2009-05-04 標(biāo)簽：電壓 926
Reset Circuit Ensures Valid Su
Abstract: This article focuses on using an external MOSFET switch to ensure a valid system voltage is present before applying it to the load. This simple circuit uses a reset circuit and the MOSFET to provide a protection circuit during po...
簡單的電路保護(hù)系統(tǒng)過熱-Simple Circuit Pro
Abstract: Using a temperature switch and fan driver IC along with a remote diode temperature switch provides thermal protection and simple fan drive functions for a system. This 2-chip circuit provides fan control, over-t...
2009-05-04 標(biāo)簽：電路 766
模擬電路生成凡速度控制-Circuit Generates
Abstract: A linear circuit measures temperature and controls the speed of a cooling fan by generating a variable supply voltage for the fan. Fan noise is becoming a larger issue as more electronic equipment enters the off...
2009-05-04 標(biāo)簽：模擬電路 988
多電壓系統(tǒng)需要電源電壓測序-Multiple Voltage
Abstract: The following application note discusses multiple solutions for sequencing power supplies and sequencing reset outputs. It discusses the advantage and disadvantages of using a discrete solution versus a more integrated solution. ...
Switching Between Battery and
Abstract: The following application note discusses a circuit that switches power sources efficiently without switching noise using the MAX6326. It discusses the advantages of using this technique over a simple diode-ord method. ...
2009-05-04 標(biāo)簽：Switching 1887
小型高電壓升壓轉(zhuǎn)換器-Small High-Voltage
The biasing of avalanche photodiodes (APDs), piezoelectric transducers (PZTs), vacuum fluorescent displays (VFDs), and microelectromechanical systems (MEMS) require high-voltage power supplies. This app note presents three topologies (Figu...
2009-05-04 標(biāo)簽：轉(zhuǎn)換器 2713
選擇合適的系列電壓基準(zhǔn)源的絕對精度電壓輸出數(shù)模轉(zhuǎn)換器設(shè)計-S
Abstract: This article provides an in depth analysis, procedure, and selection tables for selecting the optimum series voltage reference for voltage output DACs. It covers all of the important parameters such as: input supply voltage, refe...
2009-05-04 標(biāo)簽：轉(zhuǎn)換器基準(zhǔn)源 2095
Current Limited DC-DC Controll
Abstract: USB powered devices require a regulated supply. Unfortunately, the USB bus voltage can vary from 4V to 9V. Configuring the MAX668 boost controller into step-up/step-down topology can generate a current-limited regulated supply. ...
2009-05-04 標(biāo)簽：current 1867
Proper Layout and Component Se
正確的布局和元件選擇控制電磁干擾 Abstract: Understanding the physics of voltage regulator topologies is important in designing power systems for EMI and EMC compliance. In particular, the physical principl...
2009-05-04 標(biāo)簽：電磁干擾 1595
選擇合適的CMOS模擬開關(guān)-Selecting the Ri
Abstract: This tutorial outlines the basic construction, operation, and applications of analog switches. On-resistance, flatness, and charge-injection, each a performance-related specification, are defined. Application-specific features in...
2009-05-04 標(biāo)簽：CMOS 2374
理想性因數(shù)補(bǔ)償和串聯(lián)電阻差異熱感二極管-Compensati
Abstract: When using an external thermal diode to measure temperature, the accuracy of the temperature measurement depends on the characteristics of the external diode. Two critical parameters that affect measurement accuracy are ideality ...
Convert the MAX1937/8/9 from L
To prevent excessive power dissipation during output short circuit, the MAX1937/MAX1938/MAX1939 provide a latch off feature under either short circuit or under-voltage-lockout condition. Once the output is latched off either the input or t...
2009-05-04 標(biāo)簽：MAX1937 795
新增高電壓能力的MAX471/MAX472高側(cè)電流檢測放大器
Abstract: An avalanche diode and current source provide a floating power supply to allow high-side current sense amplifiers to work at up to 300V. The MAX471 and MAX472 are complete bi-directional high-side current sense ...
驅(qū)動LED的電池供電的應(yīng)用：控制亮度功率高效-Driving
Abstract: White light-emitting diode (WLED) drivers provide high efficiency and brightness matching for LCD backlighting in displays. To control brightness, these drivers regulate current going into LEDs that are arranged in either serial ...
2009-05-04 標(biāo)簽：led 1285
雙向電流檢測與單輸出-Bi-directional Curr
Abstract: Battery operated devices often need to monitor both charge and discharge currents. A dual current-sense amplifier and differential amplifier are combined to produce a single output voltage that indicates magnitude and direction o...
2009-05-04 標(biāo)簽：電流 1427
選擇最佳的電壓基準(zhǔn)源
摘要：電壓基準(zhǔn)源簡單、穩(wěn)定的基準(zhǔn)電壓，作為電路設(shè)計的一個關(guān)鍵因素，電壓基準(zhǔn)源的選擇需要考慮多方面的問題并作出折衷。本文討論了不同類型的電壓基準(zhǔn)源以及它們的關(guān)鍵...
2009-05-03 標(biāo)簽： 691
全陶瓷電容設(shè)計的降壓/反相型3A、+/-5V電源
摘要：MAX8538雙路同步buck控制器能夠提供3A的+5V、-5V輸出。利用一個控制器作為同步整流降壓(buck)轉(zhuǎn)換，而另一個通過變壓器輸出負(fù)壓。電路支持軟啟動和軟關(guān)斷。 這里...
2009-05-03 標(biāo)簽：電容 1052
滿足AMD K8低功耗移動處理器規(guī)范的電源
摘要：本應(yīng)用筆記描述了一個完全滿足AMD® K8低功耗移動處理器規(guī)范的兩相、同步整流型降壓調(diào)節(jié)器。包括一個1.2V、27.3A參考設(shè)計的詳細(xì)電路工作原理、電路圖、元件清單以及測試...
2009-05-03 標(biāo)簽：處理器 1606
通道晶體管增強(qiáng)調(diào)節(jié)的輸出電流-Pass Transistor
Abstract: A 5V linear regulator with external pass transistor (which provides an additional, parallel path for load current) delivers twice as much output current (150mA to 300mA) while maintaining 5V regulation. In Figur...
2009-05-03 標(biāo)簽：晶體管 1514
LVDS多媒體接口在汽車電子領(lǐng)域的應(yīng)用前景
摘要：數(shù)據(jù)通信需求的增長造就了多種新型數(shù)據(jù)接口，這些數(shù)據(jù)接口針對不同的應(yīng)用領(lǐng)域提供相應(yīng)的電平指標(biāo)。高數(shù)據(jù)率、高抗干擾性和構(gòu)造簡單成為開發(fā)這些接口的關(guān)鍵要求。...
2009-05-03 標(biāo)簽：lvds 1016
MAX16800測試板
摘要：MAX16800測試板是一個簡單的高亮度LED驅(qū)動電路板，專為驅(qū)動Osram、Lumileds、Nichia、Cree或其它LED驅(qū)動設(shè)計。測試表明，MAX16800適合用于汽車的內(nèi)部和外部LED照明，以及商業(yè)和工業(yè)LE...
2009-05-03 標(biāo)簽：MAX16800 1061
EMAT導(dǎo)線檢測技術(shù)在現(xiàn)場試用
EMAT導(dǎo)線檢測技術(shù)在現(xiàn)場試用 調(diào)查顯示在上世紀(jì)90年代末ACSR 導(dǎo)線的致命性故障主要是斷股造成的。隨后的調(diào)查也證明斷...
使用數(shù)字分壓器實現(xiàn)車燈調(diào)光，以節(jié)省功耗、提高效率
摘要：本應(yīng)用筆記介紹怎樣使用低成本數(shù)字分壓器來實現(xiàn)燈光強(qiáng)弱控制，既節(jié)省了功耗又提高了效率。 引言在汽車以及其他照明應(yīng)用中，通常需要調(diào)節(jié)內(nèi)部燈...
2009-05-02 標(biāo)簽：分壓器 1189
編輯推薦廠商產(chǎn)品技術(shù)軟件/工具OS/語言教程專題
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