Due to the rapid development in related applications such as backlighting and lighting, LED technology with energy saving, environmental protection and long life as a selling point is returning to the ranks of hot technology. Although the industry still needs to overcome some technical challenges to improve existing technologies, major semiconductor manufacturers have launched unique solutions.
Face many challenges
For many engineers who are new to LED technology , how to reduce their footprint in the system and maximize the brightness is the first problem they encountered when choosing the LED solution supplier. However, as LED technology is still in its infancy, suppliers still have to overcome many challenges.
Shone Tran, product marketing manager for Cypress's EZ-Color, believes that for all high-power LED designs, device sorting, temperature, color registration, and signal communication are four of the major challenges semiconductor suppliers are facing. . However, there are some subtle differences in the specific market segments. For example, color registration, temperature and signal communication are the most urgent problems in LED backlighting. In automotive lighting, temperature and color control technology are more important. As for general lighting, both aspects need further Perfect.
Tran's view of the different market segments is in line with Jiang Jialiang, marketing manager of ON Semiconductor's Asia Pacific Power Management Department. The difference is that the latter believes that cost issues are the most important factor in LED backlighting and general lighting. As for automotive lighting, he pointed out: "The existing solutions must also be reinforced in terms of reliability (such as the ability to withstand harsh ambient temperatures)."
Jiang Jialiang said that in order to make more progress in the field of general lighting, LED technology must consider how to replace the existing traditional light sources such as halogen lamps and spotlights more conveniently. “For example, LED and conversion circuits are assembled into small luminaires.†Timon Rupp, LED marketing director for OSRAM Opto Semiconductors, shares the same view. Osram Opto Semiconductors is currently focusing on the automotive and general lighting markets. Its close relationship with lighting giant Osram makes its experience of terminal demand deeper than other suppliers. "LED technology is struggling to compete with traditional light sources in general lighting," Rupp said. "The most important challenge for semiconductor suppliers is how to make breakthroughs in system integration, such as providing easier access for consumers from traditional light sources. The so-called 'turnkey' or 'plug and play' solution for this emerging technology."
Compared with other respondents, Wu Zhimin, marketing manager of National Semiconductor's power management products in the Asia-Pacific region, has more specific opinions. "In the backlight scheme that drives multiple LED strings, current matching between strings is a major challenge. Regardless of LCD TVs or automotive applications, there is a high demand for contrast," Wu Zhimin said. In addition, he pointed out that because LEDs are widely used in general lighting, suppliers must also be able to provide a variety of drivers with a full range of input voltages.
The Transient Voltage Suppressor (TVS) is a high-performance protection device in the form of a diode. When the two poles of a Tvs Diode are subjected to a reverse transient high-energy shock, it can change the high impedance between the two poles to a low impedance at a speed of the order of 10 minus 12 powers, absorbing up to several kilowatts of surge power. The voltage between the two poles is clamped to a predetermined value, effectively protecting the precision components in the electronic circuit from various surge pulses.
Transient Voltage Suppressor
Transient Voltage Suppressor,Tvs Diode,Tvs Diode Ethernet,Tvs Diode For Automotive
Dongguan Agertech Technology Co., Ltd. , https://www.agertechcomponents.com