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With the popularity of high-power LED lighting applications, LED drivers power type of development is increasingly important. Power-driven high-power LED with the city not only blood pressure and the constant need to address the problem, also called with relatively high conversion efficiency, smaller size, long working hours, lower costs and address the anti-electromagnetic interference. Currently, LED driver is having the following new requirements:

* Small size requirements

With the LED general lighting to the growing popularity of small high-power LED power supply design is a necessary development of more potential to help manufacturers produce to replace the existing lighting of LED lights, this LED driver on the proposed new challenge.

* A variety of protection and diagnostic functions

LED when the current is too strong, causing the optical characteristics of LED degradation, leading to shortened life span of LED, which would require drivers to provide over-current protection, thermal protection, short circuit protection, protection, and LED drive failure diagnosis.

* Anti-electromagnetic interference

At present, due to space and cost constraints, the market there are many LED tube not designed to meet the conduction EMI specifications, currently the United States UL Zhengzaizheshou She Ji Kai Fa Yi Jilie LED product safety assessment standards. Power Integrations has pre-empted its LinkSwitch-TN power conversion IC in the frequency modulation characteristics of LED lights can meet the EMC specifications.

The face of numerous applications and many LED driver solution, LED driver choice will be the challenges facing design engineers. Use of online simulation tools for LED driver selection and design will become an important trend. For example, National Semiconductor (NS) in series or parallel, boost or buck converters all have a range of total solutions with high-power LED manufacturers - such as OSRAM, Phlips Lumiled, Nichia, Avago-cooperation , NS provides online development tools LED WEBENCH, starting from the input design information, to select the LED driver, the establishment of BOM table, optimization efficiency, on-line simulation, and even output reference design, as engineers in the development process provides the most effective tool.

Currently, LED lighting industry has begun a large-scale access to street lighting, in early September at the China (Shenzhen) International Optoelectronic Exposition can verify this. In this high-level forum on the Expo, Nanjing Henderson Semiconductor Lighting Co., Ltd. Liang Bingwen declared, "LED lighting is always a sunrise industry" and therefore, can expect LED technology is expected to drive the LED lighting industry with the rise of the development of the semiconductor industry into a great power.