美国国家半导体-中电器材 LED照明解决方案研讨会- 中电器材厂商_在线座谈

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主题：美国国家半导体-中电器材 LED照明解决方案研讨会
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[问：wjbwy]	10:43:03 Chrisn: 请问输入电压是多少?输入电压在5-48VDC都可以
[答：Jamersonshu]	Our LM3464 input voltage is fm 12V to 80V, and LM3414HV can operate fm 4.5V to 65VDC
[问：wjbwy]	can we design our LED applications using offline WEBENCH designer?
[答：Kelvinzhang]	U can use online LED Webench & Architect for simulation
[问：wjbwy]	LEDdriver的芯片是否有1A的恒流源，且从0~1A可调节
[答：Gordonhu]	请问输入电压是多少?国半的恒流驱动芯片是直流转直流的居多
[问：wjbwy]	LEDdriver的芯片是否有1A的恒流源，且从0~1A可调节
[答：Timlong]	如果是直流转直流,请使用LM3406
[问：liutao111]	LED的色温和那些因素有关?
[答：Kelvinzhang]	因为国半主要是做LED芯片的驱动的，LED的色温的研究主要是生产LED的cree和欧诗郎等等
[问：wjbwy]	LED的寿命是多长？
[答：Timlong]	The life time depends on temperature of LEDs. Normally, higher than 50K hrs
[问：zqizzzz22]	LED设计中的温度补偿主要的方法有哪些？NS有那些产品具有这样的功能?
[答：Kelvinzhang]	NS LED Drivers LM3464 & LM3424 provide the thermal feedback feature. As LED temperature higher than the preset threshold, the LED current decreases to maintain the reliability.
[问：liutao111]	LED照明多有几个LED组成如何应对多颗串并联设计中单个LED提前损坏?
[答：Jamersonshu]	通常的做法是与LED并联一个三端稳压芯片，当LED开路时，三端稳压芯片就会导通，避免这一路出现开路的情况，如果LED短路，由于是恒流源，所以工作仍然是正常的
[问：wjbwy]	LM3401的demo board 可以申请吗?
[答：Gordonhu]	Yes, u can contact CEAC for the LM3401 demo
[问：wjbwy]	LM3492 的功耗是多少？
[答：Jamersonshu]	芯片本身功耗非常低，从datasheet可以看到，工作电流是毫安级的
[问：hjb85]	MR16的性能有哪些？寿命多长？
[答：Kelvinzhang]	MR16 is one of standard form factor of Lighting Fixture. The life time depends on the temperature of LED, and the reliability of LED drivers
[问：hjb85]	MR16的性能有哪些？寿命多长？
[答：Timlong]	MR16是普通的球泡灯，使用LED取代卤素灯，国半有LM3401以及LM3414可以给大家使用，只要设计合理，整个灯体的寿命可以达到5年以上
[问：liuguod]	NS有那些LED驱动器可用在汽车照明上?
[答：Kelvinzhang]	LM3421, LM3423, LM3424, LM3429.. Those LED driver already qualified AECQ-100
[问：yxhua]	NS有那些产品可以驱动OLED?
[答：Gordonhu]	对于oled，只要知道输入输出的规格，国半都有相应的型号对应
[问：pszzz1]	NS中可用在MR16中的驱动器有那些型号?专家推荐那种最佳?
[答：Timlong]	LM3401, LM3414, LM3492 is suitable for MR16 application
[问：yxhua]	采用PWM对LED调光,有何优点? 如何降低LED的低频闪烁?
[答：Timlong]	Increase the PWM dimming frequency higher than 200 Hz, thanks
[问：yxhua]	采用TRIAC和PWM对LED调光,两者有和差别和优缺点?
[答：Gordonhu]	、triac调光是可控硅调光，通常装在家庭的墙上，pwm是输入一个方波信号进行调光
[问：jida_song]	恒功率输出时，如果其中一个LED坏了，是否会造成其他LED的损坏？
[答：Jamersonshu]	How is the your LED configeration? Connected in parallel or series?
[问：hjb85]	美国国家半导体公司的LED 路灯驱动方案的优点有哪些？
[答：Timlong]	The benefits of LM3464 for streetlamp applications: 1) No EMI generated, 2) Cost effective as no inductors, o/p capacitors, and rectifiers, 3) High efficiency w/ dynamic headroom architecture
[问：lihaieeee]	目前设计LED路灯系统,最大的挑战是什么?
[答：Kelvinzhang]	System Reliability is the biggest challenge in LED streetlight application...
[问：曲工]	您好：<br>     请问，怎样才能找到贵司的供应商？谢谢！
[答：Kelvinzhang]	請到中電網站取得聯絡資料.http://www.ceacsz.com.cn/Contact.aspx
[问：yanyaoxiong]	如何解决LED灯闪烁的问题
[答：Timlong]	Increase the PWM dimming frequency higher than 200Hz
[问：luzhong8888]	我需要LED大功率芯片和资料及设计软件
[答：Kelvinzhang]	PLs contact the LED suppliers, e.g. Cree/OSRAM for more detail spec of higher power .
[问：wjbwy]	线性的模式LED driver稳定吗?
[答：Timlong]	Although LM3464 is working on linear mode, it still maintain the stable operations with the following benefits; 1) Ease of control EMI; 2) cost effective; 3) High Efficiency
[问：jwdxu2009]	性价比如何？有免费样品提供吗？
[答：Timlong]	Pls contact our distributor CEAC for the samples, thanks
[问：liutao111]	选用LED街灯驱动器和一般LED驱动器有什么特别要求?主要是那几个参数?
[答：Gordonhu]	Pls contact our distributor CEAC for the samples, thanks
[问：xqh518]	有家庭LED照明解决方案吗？
[答：Timlong]	We have LM3444 (standard version) , LM3445 (triac dimmable version) solution for residential Indoor lighting application.

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