2010年101热门器件排行榜：你会选择其中哪些？(2)

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        *101热门器件排行

LED是主要关注点

正如之前提到的，LED是过去几年里设计人员最关注的几个领域之一，领先厂商推出的主力产品也不在少数。 回想2010年4月，科锐推出了应用了TrueWhite技术的LED模块，让高校、高质量的紧凑易用的照明产品能成为了可能(图1)。LMR4的产品首次推出，解决了厂商普遍遇到的设计问题，并把LED解决方案应用到照明设备中去。
 
LMR4集成了驱动电子、光学和主要的热管理部件，让方案变得立即可用。设计寿命2700小时，功耗12W，照明效率达700流明，温暖的白光色温为2700K，显色指数(CRI)为90。用户可以用一个特别设计的散热器来满足高温的应用，如射灯和隔热的天花板照明。 2010年10月，科锐推出的高压高效率的XLamp系列变种产品再次吸引了眼球。XLamp MX-6S和MX-3S LED进入了高压领域，LED灯泡的效率更高，尺寸和MX-6和MX-3 (图2)相当，但运行电压更高。
 
MX-6S LED流明数更高，60mA/20V时，色温6000K的时候最高达139流明，色温3000K的时候达114流明。MX-3S 提供115mA/10.7V下高达122流明，色温6000K，色温3000K时达100流明。科锐的MX系列LED提供了高压LED下照明级别的表现，同时实现了高可靠性、高效率和可靠一致的色彩。可以下载MX-6S LED的数据表和MX-3S LED的数据表。

Elma电子推出了高亮度版本的灯管(图3)。2010年7月，代号为 M-Tubes的元器件推出，该原件采用了两个高效的 Dragon LED用于照明，散热管理则依靠铝制外壳。灯管提供四种长度和三种不同深度的颜色，支持白色、红色、绿色、黑白和RGB。提供两种连接：连接导线或者带有主插座的即插即亮的版本。其他的特性海报过单端或双端配置，最长达2米。

2011年1月，Lumex推出了QuasarBrite 0404 RGB LED(图4)，在封装尺寸上创下了记录，只有1X1X0.25mm，是先有最小的RGB LED封装。它提供120°的 ，低电流下输出可靠，R/G/B输出分别为30，25和10mA。

 

符合RoHS标准(限制使用有害物质指令)的SML- LX0404SIUPGUSB的运行温度在–40°C到85°C。量产下价格在0.25-0.5美元。 2011年3月，欧司朗的设计用在了150英寸的LED视频显示方案中，可视角度非常好。显示器是由FormoLight Technologies开发的，使用了欧司朗的 Multi ChipLEDs。根据 GormoLight的说法，显示器提供很高的亮度和对比度，图像清晰锐利且生动，可用于室内和户外，从任何角度都可观看。欧司朗的RGB Muilti ChipLEDs是市面上最小性的 RGB LED。最值得注意的是这些LED并不是作为背光源，而是作为显示表面，而用户则无法辨别，因为产品非常紧凑，尺寸只有1.6x1.6x0.99mm。更多信息，请访问欧司朗和Formolight网站。

LED生产商在可以预见的未来可能不会有更多突破，特别是显示、家用和商业场合中需要的效率不断提高。随着有机LED(OLED)，有源矩阵有机LED(AMOLED)，量子点LED(QLED)的发展，未来的十年应该充满了可能性。

电源表现良好 和之前提到的LED比，电源吸引了更多关注，特别是每个人都寻求效率水平的提升，同时做到节能、环保和低成本。两个电源产品进入了前十名。 开放式架构模块中，Semiconductor Circuits的’Cool Power Technologies CPT7B48 12V/7A 16砖dc-dc转换器，提供84W输出功率，温度55°C，气流为200lfm。产品适用于分布式的电源架构应用以及整流中间总线转换器，符合分布式电源开放标准(DOSA)规定的尺寸和接口标准，提供36-75V的输入直流电压，以及2250V滞留输入/输出隔离。

 

其他的特性还包括从1/2负载到满载的效率超过了93%，符合 EN60950，100-V/100ms输入电压过度和预偏置负载启动、固定频率运行、自重新启动、以及一系列的保护功能。滞后欠压锁定(UVLO)2V，远程感应和+10%/–20%的输出电压调整符合行业标准，远程ON/OFF支持逻辑正负选项。 CUI的 VOF-80开放架构ac-dc电源(图7)输出80W的持续功率，支持3.3V、5V、12V、15V、24V和48V直流输出电压，效率达89%。其他的特性包括过压和短路保护，模块运行温度可达60°C，支持额定值降低。单片价格自30.34美元起。

(待续……) 下一页原文参考

3 LEDs Are The Main attraction

 

As mentioned earlier, LEDs were number one on a lot of designers’ minds over this past year. There was no shortage of impressive offerings from the leading players.

Back in April 2010, Cree drew reader attention with LED modules employing its TrueWhite technology, which enables efficient, high-quality light in a compact, easy-to-use product (Fig. 1). The LMR4 debuted as the first product in the line, promising to overcome common design issues manufacturers face when trying to incorporate LED solutions into their lighting fixtures.

The LMR4 integrates driver electronics, optics, and primary thermal management, making it drop-in ready. Designed to last 35,000 hours while consuming 12 W, it delivers 700 lumens at a warm-white color temperature of 2700 with a color rendering index (CRI) of 90. Users can include a specially designed heatsink to accommodate specific high-heat applications, like downlights for insulated ceilings. Download the datasheet .

In October 2010, Cree caught eyes again with high-voltage, high-efficiency variations of its popular XLamp series. Entering the high-voltage domain for creating more efficient LED bulbs, the XLamp MX-6S and MX-3S LEDs fit the same footprint as the company’s XLamp MX-6 and MX-3 (Fig. 2) siblings while operating at higher voltages.

The MX-6S LED delivers a luminous flux up to 139 lumens at 60 mA/20 V in 6000K and 114 lumens in 3000K while the MX-3S provides up to 122 lumens at 115 mA/10.7 V in 6000K and 100 lumens in 3000K. As per Cree, the MX series LEDs deliver lighting-class performance for high-voltage LEDs including high reliability, high efficacy, and reliable color consistency. Dowload the datasheet for the MX-6S LEDS and download the datasheet for the MX-3S LEDs.

Elma Electronic introduced a high-brightness version of its light tubes (Fig. 3)in July 2010. Dubbed M-Tubes, the components employ two high-efficiencyDragon LEDs for illumination and rely on an aluminum body for thermal management. Tubes are available in four lengths and in three shades of white, red, green, blue, monochrome, and RGB.

Two types of connection are available: connecting leads or a plug-and-light version with a main plug. Other features include single-ended or double-ended configurations and lengths up to 2 m. Download the datasheet.

In January 2011, we saw the QuasarBrite 0404 RGB LED (Fig. 4) from Lumex set a size record in its package, measuring a mere 1 by 1 by 0.25 mm, which was then considered the smallest RGB LED package available. The component provides a 120° viewing angle and reliable performance at low current outputs, i.e., 30, 25, and 10 mA respectively for R/G/B.

The RoHS-compliant (Restrictions on Hazardous Substances)SML-LX0404SIUPGUSB specifies an operating temperature range from –40°C to 85°C. Pricing ranges from $0.25 to $0.50 each in production quantities.Download the datasheet.

In March 2011, Osram achieved a benchmark and much attention via a design win with a 150-in. diagonal LED video display (Fig. 5) that looks good from any angle. The display, developed by FormoLight Technologies, employs Osram’s compact Multi ChipLEDs. As per the companies, the display provides high brightness and high contrast with sharp, vivid images for indoor and outdoor applications and is clearly viewable from any angle.

Osram’s RGB Multi ChipLEDs take position as the smallest RGB LEDs currently on the market. Most notably, these LEDs are not put to use as backlighting sources, but are visible on the surface of the display, remaining undetected by viewers because of their compact, 1.6- by 1.6- by 0.9-mm size. For more details, visit the Osram and Formolight websites.

There probably will be no break in the action for LED makers in the foreseeable future, particularly with the increasing demand for more efficiently lit displays, homes, and businesses. Also, with the further evolution of organic LEDs (OLEDs), active matrix organic LEDs (AMOLEDs), andquantum dot LEDs (QLEDs), the possibilities should keep us occupied quite productively for at least the next 10 years.

 

4 Power Sources Place Well

Right up there with LEDs, power sources are drawing more interest, particularly with everyone trying to boost efficiency levels and keep things green, both in the environment and in their wallets. Two power sources made the top 10 this year.

In an open-frame module, Semiconductor Circuits’ Cool Power Technologies CPT7B48 12V/7A sixteenth-brick dc-dc converter (Fig. 6)delivers 84 W of output power at 55°C with 200 lfm of airflow. Suitable for distributed power architecture applications or as a regulated intermediate bus converter, the module complies with Distributed-power Open Standards Alliance (DOSA) footprint and interface standards and provides an input voltage range of 36 to 75 V dc plus 2250 V dc of input-to-output isolation.

Other features include efficiencies exceeding 93% from one-half load through full load, compliance with EN 60950, 100-V/100-ms input voltage transient and pre-biased load startup, fixed-frequency operation, auto-restart, an array of protection features, undervoltage lockout (UVLO) with 2-V hysteresis, remote sense and +10%/–20% output voltage trim using industry standard equations, and remote ON/OFF with positive or negative logic options available. Download the datasheet.

CUI’s VOF-80 open-frame ac-dc power supply (Fig. 7) delivers up to 80 W of continuous output power and is available with 3.3-, 5-, 12-, 15-, 24-, and 48-V dc output voltages with efficiencies of up to 89%. Other features include overvoltage and short-circuit protection, and the units operate up to 60°C with derating. Single-unit prices start at $30.34. For more specs, download the datasheet.