汽車應用的LED驅動

　　汽車應用的LED驅動

　　設計選項包括外部和集成輸出版本，所有這些都符合嚴格的汽車資格標準。

　　介紹

　　LED照明在汽車應用中的使用也越來越多，原因有很多，LED照明正在滲透到非汽車領域。發(fā)光二極管效率更高，體積更小，壽命更長，可以提高設計的自由度。在剎車燈的應用中，LED的快速開啟提供了一個額外的安全邊際，警告后面的司機。發(fā)光二極管的響應速度是傳統(tǒng)白熾燈泡的十倍。除了這個安全方面，LED照明的顏色更自然，更安全的向前照明。易于控制的LED也使他們成為一個自然的智能照明系統(tǒng)，根據(jù)車輛傳感器輸入調(diào)整。控制的一個重要方面是集成電路（IC）驅動程序提供的電源管理。

　　According to Strategies Unlimited， a market intelligence firm that focuses on LED lighting， LED lighting penetration of exterior and interior lighting functions continues. Strategies Unlimited analyst Dr. Robert Steele says that as auto production recovers from the recession， so too will sales of LEDs for these applications. For 2010， Steele predicted that the automobile segment would grow by more than ten percent from 2009.

　　Automotive applications for LEDs include interior lighting （such as dome， dash and footwell lighting）， indicator and telltale lights and infotainment backlighting as well as exterior （signaling） functions such as tail lights， turn signals， brake lights （including center high-mount stop lamps （CHMSL）， parking lights， side marker lights， fog lamps and daytime running lights （DRLs）。 More recently， a few vehicle manufacturers have introduced LED headlamps on production models based on high-brightness （HB） LEDs. In some cases， the capabilities of an LED driver can enable more than one application to be addressed with the same LEDs.