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/認證、便攜電源、電動車/新能源、AC-DC與DC-DC轉(zhuǎn)換、基準/監(jiān)控/保護電路等專業(yè)領(lǐng)域。
接口的DS2760 1線高精度鋰離子電池監(jiān)控和保護IC在單片
Abstract: This application note provides the reader with information concerning how to interface the Maxim DS2760 Battery Monitor and Protector IC to a microcontroller. The DS5000 microcontroller module is used for example purposes. Both h...
獲取電量計應(yīng)用中的鋰電池特性
摘要：精確的電池電量計量應(yīng)建立在對在不同工作環(huán)境和條件下的電池各種特性的充分了解的基礎(chǔ)上。要獲取這些信息，應(yīng)該在已知的條件下準確測試電池的各種特性。本應(yīng)用筆記...
2009-04-29 標簽：電量計 1353
選擇最佳的電壓基準源
摘要：電壓基準源簡單、穩(wěn)定的基準電壓，作為電路設(shè)計的一個關(guān)鍵因素，電壓基準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源以及它們的關(guān)鍵...
2009-04-29 標簽： 813
電源內(nèi)阻：扼殺DC-DC轉(zhuǎn)換效率的元兇
摘要：DC-DC轉(zhuǎn)換器常用于采用電池供電的便攜式及其它高效系統(tǒng)，在對電源電壓進行升壓、降壓或反相時，其效率高于95%。電源內(nèi)阻是限制效率的一個重要因素。本文描述了電源內(nèi)阻...
2009-04-29 標簽：轉(zhuǎn)換器 1015
電池的合理選擇
摘要：最終用戶是否滿意其便攜式設(shè)備的設(shè)計，很大程度上取決于電池的性能。 電池的關(guān)鍵指標當然是電池的使用壽命。從表面上看，這只是一個簡單的規(guī)格，但它卻涉及到了...
2009-04-29 標簽： 698
上電復(fù)位與相關(guān)監(jiān)控功能
摘要：本文討論用于單電源或雙電源處理器的上電復(fù)位功能和門限電壓的選擇策略，另外，還探討了手動復(fù)位、電源失效和低電壓檢測等功能。文中闡述了避免使用分立POR和處理器...
2009-04-29 標簽：電復(fù)位 1139
模擬集成電路的低電壓系統(tǒng)-Analog ICs for Lo
Abstract: This article about low-voltage ICs discusses many types of low-voltage ICs, including voltage regulators, data converters, op amps and current monitors, comparators, microprocessor supervisors, voltage references, analog switches...
2009-04-29 標簽：集成電路 1108
用兩個單向電流檢測放大器組成一個雙向電流檢測放大器
摘要：許多電池電流監(jiān)測應(yīng)用中需要雙向電流檢測功能，以測量電池的充電和放電電流。本文介紹了怎樣用兩個單向電流檢測放大器，比如MAX4172和MAX4173，組成一個雙向電流檢測放大...
電流檢測集成電路阻止過損傷-Current-Sense IC
Abstract: This application note describes the use of a current-sense amplifier to monitor the load current of a circuit supply voltage. When the current being drawn from the supply exceeds the predetermined level, an external pass transist...
2009-04-29 標簽：集成電路 1148
Overcurrent Monitor Operates u
Abstract: Using a current-sense amplifier, a high-side MOSFET driver, and a latching voltage monitor a circuit can be easily constructed that protects from overcurrent conditions and operates at voltages as high as 26V. W...
2009-04-29 標簽：Overcurren 888
斷路器處理電壓76V-Circuit Breaker Han
Abstract: A current-sense amplifier, comparator, external CMOS switch, and an external transistor can be used to create a circuit breaker. The simplicity of low-side current monitoring can mask the advantages of a high-si...
2009-04-29 標簽：斷路器 1138
超載保護電路電池和電源-Overload Circuitry
Abstract: A combination of current-sense amplifier, dual-comparator and external CMOS switches can be used to prevent the damaging effects of a reversed-polarity battery or short-circuit load. The most widely used device ...
2009-04-29 標簽：電路 1221
Snubber Circuits Suppress Volt
Abstract: The flyback dc-dc converter topology results in significant cost and space savings for multiple output power supplies with high output voltage for power levels up to 100W. Flyback topologies store and transfer energy using a tran...
2009-04-29 標簽：Voltage 2744
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...
2009-04-29 標簽：集成電路 1658
使用MAX8515并聯(lián)穩(wěn)壓器輸出電壓感測應(yīng)用的DC - DC
Abstract: Output overvoltage protection is a critical feature for DC-DC converters in order to protect sensitive loads from permanent damage. The basic requirements for an overvoltage protection (OVP) circuit are precise sensing of the out...
Add Fault Protection to 4-20mA
Abstract: This circuit provides flexible fault protection for a 4-20mA current loop. In addition, it includes circuitry for recovering digital signals (such as the HART protocol) imposed on the loop. 4-20mA current loops ...
One Button Turns Microprocesso
Abstract: Combining a low-dropout (LDO) linear regulator with an OR gate produces a circuit that allows a single pushbutton to turn a microprocessor-based portable system on and off. When placing a microprocessor-based po...
2009-04-29 標簽：Microproce 1353
電源備份開關(guān)-Power-Backup Switch
Abstract: A microprocessor-supervisor IC and two external MOSFET switches form a low-voltage backup power supply that can provide several amperes when the main supply fails. Every subsystem in an electronic product depend...
盡量減少短路電流脈沖的熱插拔控制器-Minimize Sho
Abstract: Because of internal circuit-breaker delay and limited MOS-gate pulldown current, many hot-swap controllers do not limit current during the first 10µs to 50µs following a shorted output. The result can be a brief flow ...
Series Protection for Power-Li
Abstract: This application note describes a circuit that protects an n-channel power MOSFET against low and high voltages. It includes a high-side switch-driver IC and fast-response, 3-transistor, overvoltage detector. Vo...
2009-04-29 標簽：Power-Line 1118
并聯(lián)穩(wěn)壓器提高功率放大器的電流限制精度-Shunt Regu
Abstract: Substituting a shunt regulator (U1) for the usual transistor in this power-amplifier circuit improves the current-limit accuracy. Adding current-limiting circuitry to an emitter follower protects both the pass t...
2009-04-29 標簽：穩(wěn)壓器 1673
隔離式電源電信應(yīng)用-Isolated Power Suppl
Abstract: Simple easy to use high side current sense amps protects power supplies as a result of irregular supply voltage caused by short-circuit conditions. To ensure compliance with all international standards, the desi...
規(guī)格與測量機振蕩器噪聲集成電路基站混頻器-Specifica
Abstract: Residual phase noise from local oscillators (LO) can be degraded by additive noise of on-chip local oscillator drivers/buffers in integrated circuit mixers. Reciprocal mixing of strong RF signals with the LO noise degrades the re...
2009-04-29 標簽：振蕩器 739
簡單電力場效應(yīng)管驅(qū)動器是孤立的和DC耦合-Simple Po
Abstract: An isolated transformer-driver IC (MAX845) and small external transformer produce an isolated gate-control signal for a power FET. Designers of power electronic circuits must often drive power switches that feed...
2009-04-29 標簽：驅(qū)動器 926
CCFL推挽式緩沖電路
摘要：DS3984, DS3988, DS3881, DS3882, DS3992和DS3994為冷陰極熒光燈(CCFL)控制器，它們使用推挽結(jié)構(gòu)來產(chǎn)生驅(qū)動熒光燈所需的高壓交流波形。在推挽式驅(qū)動器中，升壓變壓器的寄生電感與n溝...
2009-04-29 標簽：CCFL 2719
修改MAX2010電路使其工作在450MHz
摘要：本應(yīng)用筆記說明如何對MAX2010 (可調(diào)節(jié)RF預(yù)失真器)標準評估板進行下蓋，使其工作頻率優(yōu)化在450Hz。默認情況下，預(yù)失真器工作在500MHz至1000MHz，但是，對MAX2010評估板稍做修改，...
2009-04-29 標簽：MAX2010 641
修改MAX2010電路使其工作在360MHz
摘要：本應(yīng)用筆記說明如何對MAX2010 (可調(diào)節(jié)RF預(yù)失真器)標準評估板進行下蓋，使其工作頻率優(yōu)化在360Hz。默認情況下，預(yù)失真器工作在500MHz至1100MHz，但是，對MAX2010評估板稍做修改，...
2009-04-29 標簽：MAX2010 839
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