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正確的布局和元件選擇控制電磁干擾
Proper Layout and Component Selection Controls EMI Abstract: Understanding the physics of voltage regulator topologies is important in designing power systems for EMI and EMC compliance. In particular, the physical princi...
2009-04-30 標(biāo)簽：電磁干擾 925
由USB端口便攜式供應(yīng)產(chǎn)生5 V和+3.3 V電源由USB端
Abstract: A portable device using the circuit of Figure 1 derives power from the USB bus. The MAX1811 uses USB power charges a lithium-ion (Li+) battery at, USB compatible, 100mA or 500mA rates. Battery power is then stepped up with the MA...
2009-04-30 標(biāo)簽：USB端口 1594
新增電流刺激驅(qū)動(dòng)的USB接口充電器AC適配器-Add Cur
Abstract: A USB interface is capable of charging a portable device while transferring data. But for high-capacity batteries, the limited output current of USB hosts and hubs greatly extends the charging time. Powered USB hubs and USB hosts...
用DS2711/12檢測(cè)原電池
摘要：DS2711和DS2712標(biāo)準(zhǔn)NiMH電池充電器(專為1節(jié)或2節(jié)AA或AAA NiMH“標(biāo)準(zhǔn)”電池設(shè)計(jì))能夠檢測(cè)原電池(一次電池，不可充電電池)，避免對(duì)其充電。本應(yīng)用筆記介紹了各種來(lái)自不同廠商的電...
2009-04-30 標(biāo)簽：DS2711 1172
可充電電池：原理，隱患，及安全充電方法
摘要：本文概要介紹了電池充電方式和現(xiàn)代電池技術(shù)，以使讀者能更好的了解便攜設(shè)備中使用的電池。本文對(duì)鎳鎘(NiCd)電池，鎳氫(NiMH)電池和鋰離子(Li+)電池的化學(xué)性質(zhì)進(jìn)行了描述，...
2009-04-30 標(biāo)簽：充電電池 2494
提高M(jìn)AX1737鋰離子電池充電器的精度-Improving
Abstract: This application note describes how to improve full-scale current-sense and charge-termination accuracy of the MAX1737 lithium-ion (Li+) battery charger. The MAX1737 current-sense is more accurate than stated in the data sheet, b...
2009-04-30 標(biāo)簽：MAX1737 1788
nMOS晶體管與DS2714的配合使用
摘要：DS2714獨(dú)立式NiMH電池充電器的數(shù)據(jù)資料中提供了一個(gè)使用pnp晶體管的應(yīng)用電路，利用pnp晶體管對(duì)充電電流進(jìn)行開(kāi)、關(guān)控制。這種方式可能存在某些問(wèn)題，因?yàn)槌潆娍刂埔_的電...
2009-04-30 標(biāo)簽：晶體管 1529
充電電池和單機(jī)快速充電器概述
摘要：本應(yīng)用筆記簡(jiǎn)單介紹了鎳鎘(NiCd)、鎳氫(NiMH)和鋰離子(Li-Ion，Li+)可充電電池, 討論它們的性能，并說(shuō)明在不需要微控制器的情況下如何構(gòu)建單機(jī)結(jié)構(gòu)，安全、快速地為鎳氫和鋰...
2009-04-30 標(biāo)簽：充電電池 1144
鋰離子電池充電運(yùn)行的安全問(wèn)題減少-Understanding
Abstract: Due to the high energy/power density, in relation to the weight and volume of Lithium-ion (Li+) battery technology, there are some lingering safety concerns when charging and discharging the batteries. Although an already mature ...
2009-04-30 標(biāo)簽： 1786
簡(jiǎn)化1節(jié)Li+電池供電設(shè)備的設(shè)計(jì)
摘要：MAX8671X電源管理IC (PMIC)能夠?yàn)楸銛y系統(tǒng)設(shè)計(jì)提供鋰電池充電及電源穩(wěn)壓，該器件可利用USB端口或外部AC-DC電源適配器作為輸入電源為鋰離子(Li+)、鋰聚合物(Li-Poly)電池充電。PMIC...
2009-04-30 標(biāo)簽：供電設(shè)備 875
估算DS2712 NiMH電池充電器的開(kāi)關(guān)速度
摘要：開(kāi)關(guān)模式下，DS2712電池充電器的開(kāi)關(guān)速度因電感選擇、充電電流和電池電壓而有所不同。某些情況下，需要了解各種條件下的開(kāi)關(guān)速度，以解決噪聲靈敏度、峰值充電電流和...
2009-04-30 標(biāo)簽：DS2712 1317
Step-Up Supply Charges Battery
The circuit of Figure 1 supports the many portable applications in which a microprocessor (µP) or microcontroller (µC) controls charging of the battery. IC1 is a step-up switching regulator that boosts VIN (nominally 5V) as nec...
穩(wěn)壓電荷泵提供50毫安-Regulated Charge P
The DC-DC converter circuit of Figure 1 substitutes a voltage tripler in place of the external inductor and diode normally associated with switching regulator IC1. Inverting and noninverting drivers in the MOSFET-driver chip (IC2) activate...
2009-04-30 標(biāo)簽：電荷 1003
新發(fā)展的電池充電器-New Developments in
Electronic equipment is increasingly becoming smaller, lighter, and more functional, thanks to the push of technological advancements and the pull from customer demand. The result of these demands has been rapid advances in battery technol...
2009-04-30 標(biāo)簽： 1736
Dual-Voltage Supply Powers SIM
Global-system-for-mobile-communication phones have a subscriber-identification module (SIM) that allows local wireless providers to recognize the user and his or her billing information. Although most SIMs are changing to 3V operation, the...
2009-04-30 標(biāo)簽：Dual-Volta 815
簡(jiǎn)單的電路斷開(kāi)負(fù)載-Simple Circuit Disco
Placing a load-disconnect circuit on the output of a bootstrapped step-up regulator allows the regulator to start with load currents much higher than would otherwise be possible (Figure 1). During shutdown, the disconnect completely isolat...
2009-04-30 標(biāo)簽：負(fù)載 1217
Push-Pull Driver Provides Isol
The circuit in Figure 1 converts a regulated 5V input to an isolated 5V output with 1A current-output capability. IC1, a push-pull transformer driver, powers a pair of cross-coupled power MOSFETs in a flip-flop-like configuration. In turn,...
2009-04-30 標(biāo)簽：driver 2116
CPU核心供電-Powering Portable CPU
Providing electrical power for CPUs and other high-density logic has never been easy, though it appeared for awhile that technology would eventually reduce the power needed for computing tasks. Although technology advances have been rapid,...
2009-04-30 標(biāo)簽：cpu 1314
電路折衷降低噪音電池輸入電源-Circuit Tradeof
Analyzing noise from the perspective of portable-system design will help you in making appropriate trade-off in power-supply design. RF-communicating computers and other new mobile systems can act as portable generators of unwanted...
2009-04-30 標(biāo)簽：circuit 1760
反饋分離增強(qiáng)供電的安全和性能-Feedback Isolat
Isolated power supplies have been around since the beginning of the electronics industry. As power-supply designs change to keep pace with increased efficiency and power-density demands, isolated feedback is crucial to maintaining safety....
2009-04-30 標(biāo)簽：反饋分離 1075
Proper Handling Helps Make the
Abstract: Li-ion batteries pack the most power per unit volume, but excessive charging or discharging can damage or destroy the battery and its surroundings. Carefully designed circuits can help you avoid such dire consequences. ...
2009-04-29 標(biāo)簽：Batteries 1470
Synchronous Rectification Aids
Synchronous rectifiers can improve switching-power-supply efficiency, particularly in low-voltage low-power applications. This article compares synchronous rectifiers to Schottky-diode types and illustrates some circuit tricks useful in th...
2009-04-29 標(biāo)簽：Low-Voltag 2099
多功能集成電路啟用化學(xué)獨(dú)立電池充電-Versatile IC
Fast-moving battery technology poses a question for designers: whether to choose the latest technology for maximum performance or to sacrifice performance for a mature and more reliable technology. The advent of chemistry-independent batte...
2009-04-29 標(biāo)簽：集成電路 677
反向電流保護(hù)電路-Reverse-Current Circu
Battery reversal can be fatal to portable equipment. However, numerous circuits can protect against the backward installation of batteries and other overcurrent-causing conditions. Battery-operated equipment is prone to the consequ...
Flyback Converter Serves Batte
Abstract: This article describes the design of a flyback power converter to operate CCD equipment such as digital cameras from four AAA cells. The MAX752 and a multiple output transformer deliver +15V, -7.5V and 5V. First pass design had l...
2009-04-29 標(biāo)簽：Converter 2133
調(diào)節(jié)器拓?fù)潆姵毓╇娤到y(tǒng)-Regulator Topologi
Power supplies are perhaps the most crucial elements of a battery-powered system. Knowledge of some basic regulator topologies will help you select or design the right supply configurations for your needs.Portable computers and dig...
2009-04-29 標(biāo)簽：調(diào)節(jié)器 1337
電力保護(hù)3V/5V雙電源系統(tǒng)-Power Conservat
Power saving is the common denominator for lower supply voltage and portable electronic systems. The paramount need in battery-powered and portable electronics—saving power—is also the major benefit in moving from 5V to 3.3V (and lower...
2009-04-29 標(biāo)簽：雙電源 1673
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| 無(wú)刷電機(jī) | FOC | IGBT | 逆變器 | 文心一言 | 5G | 英飛凌 | 羅姆 |
| 直流電機(jī) | PID | MOSFET | 傳感器 | 人工智能 | 物聯(lián)網(wǎng) | NXP | 賽靈思 |
| 步進(jìn)電機(jī) | SPWM | 充電樁 | IPM | 機(jī)器視覺(jué) | 無(wú)人機(jī) | 三菱電機(jī) | ST |
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