The lighting and xbox 360 led strip are currently in the two largest application, and led the constant innovation of drive technology is the two big application to the popularity of the power. “In recent years, LED drove by linear dropout regulator (LDO). Quasi low charge pump type to switch, a shift in efficiency, current drivers, ability had significant progress. The efficiency is also greatly improve the development of semiconductor technology. With, especially high voltage and BCD technology unceasing enhancement, some peripheral power switch tube and diode are also integrated into the drive chip, make peripheral circuit greatly simplified.” Maxim sang Technology Co., LTD.
Led downlights 12v with LED the chip advance, make the power LED more and more big, the brightness of more and more high, its application is becoming more and more widely. From early instrument instructions into LCD screen back lighting, flashlight, auto show, lighting, decorative lamp and so on, until general lighting applications, such as the berth lamp, table lamp, fluorescent lamp and lamp, etc.
“In recent years in the process and design progress in the ascension of the product function also increased a led the range.” Set technology YingXiaoChu, deputy director of ChenJunCong said. “Such as reducing external parts correspondingly reduce the blank application and product volume. Process technology promotion make products can load more current and voltage, and support more LED parts. These applications are in LED help. And because of the size, can be applied to decrease LED in the mobile flash on the increasing……. The luminous efficiency as the projector that the LED light source, these innovative application hair is the process and design with the progress of the supplement each other.”
In recent years, LED the progress of the drive technology mainly in the superior efficiency, high power, high pressure technology. In the cell phone portable field, the main is a white LED drive application, now of the low voltage difference drive, charge pump type drivers are to the application and development drive mode, low voltage difference driver can put the pressure difference do very low (50 mV / 20 mA), charge pump type to drive is now 2 times, 1.5 times and 1.33 times, etc, the objective is to improve efficiency, increase the voltage application range. The company currently has launched innovative industry and driver were first Yin and Yang of low voltage difference of LED drive chip, will soon launch and drive of Yin and Yang LED the charge pump type of drive chip, allegedly the chip can only use a external capacitor 1 X 2 X to realize automatic adjustment of the voltage between, thus greatly enhance the efficiency of the LED.
“LED technology is also rapid progress, now LED the luminous efficiency has improved tremendously, turn-on voltage also do more low, so now the high brightness LED used more and more widely, but the main or back lighting and the innovation of the lighting applications.”
“In the lighting applications, for, efficiency is the main key problem. Because the wattage and output current bid and produce the problem of high temperature is needed to improve the place, but also the product promotion points.”
“At present, the LED drive is the biggest problems facing the heat consumption and its related reliability problems. This will need to drive the chip further reduce power consumption, lower their itself fever. At the same time, because applied to large contemporary high power occasions, drive chip voltage overshoot, ground pulsation and electrostatic protection is needed to deal with the good, so as to improve the system reliability. In addition, drive technology how to solve and now the utility of the ac drives seamless connection, so as to reduce the resistance of the conversion to the LED lighting and cost pressure, is also a challenge.”
Led downlights dimmable with the performance and efficiency continuously surpasses traditional lighting technology. This new technology is extensively used. However, if we just use the static white LED to replace the outdated technology of words, it will be difficult to play solid-state lighting technology full potential, not fully realized and the characteristic of LED lighting products. In intelligent drive support, such as the introduction of wireless control, automatic light detection and microprocessor technology, LED lighting lamps and lanterns can not only replace the traditional white light lighting, and still can achieve new functions, and the function with traditional lighting technology is difficult to achieve.
