Author: Photoelectric News Network has Cong
The drive circuit is an important part of LED application products, and its technology maturity is gradually increasing with the expansion of the LED market. Whether in lighting, backlight or display panels, a number of mature products have emerged. However, with the further development of LED applications, the industry has put forward higher requirements for drive solutions, and also brings huge opportunities and challenges to the LED drive industry. How do we view the technology trends of LED drivers? How to interpret the current difficulties and hot spots? Where is the market direction? Faced with various questions, Optoelectronics News produced the "LED driver IC driving LED to popularization" news topic, comprehensive analysis of existing technical solutions, interviewing well-known experts in the industry, exploring the development trend of the industry, and striving for the LED industry The status quo and future trends are reported in all directions. The following is the opinion of NXP Jin Yujie Director.
Jin Yujie, Marketing Director, Multimarket Products, Greater China, NXP Semiconductors
Optoelectronics News: Please briefly introduce the layout of NXP's LED driver series. What are their advantages and characteristics?
Jin Yujie: NXP Semiconductors (hereinafter referred to as "NXP") LED driver products mainly focus on indoor lighting, street lighting and LED backlighting.
NXP's LED driver family has unique advantages in indoor lighting applications. We introduced the world's first integrated dimmable mains LED driver, the SSL2101, a small size switch mode power supply (SMPS) controller IC designed to drive LED devices and provide dimming capability to Further improve the energy efficiency of LED Lighting. The SSL2101 can drive a variety of lighting systems with different power requirements, including LED retrofit lamps, LED modules, LED spotlights, spotlights, and LED strings for store displays. The dimming capability of the SSL2101 provides a rare opportunity for lighting system designers to design more energy efficient systems, and is extremely cost effective. The device has high integration, low total number of electronic components, and minimal board space. The division is able to take full advantage of the advantages of LED dimming characteristics and is very popular in the market. In the LED Street Light scheme, our program highlights the high efficiency. In terms of LED backlight, we have taken advantage of our high-pressure process and introduced a chip that can drive 150 LED strings to support a high-efficiency LED edge backlight solution.
Optoelectronic News Network: What are the difficulties of the current LED driver?
Jin Yujie: At present, LED drivers are difficult in indoor lighting, mainly in terms of compatibility with the mains and heat dissipation: in terms of street lamps, they are mainly high and low temperature reliability, and in backlight driving, they are mainly efficiency and current stability. Of course other comprehensive performance is also important. For example, the NXP SSL2101/SSL152x series products are compatible with full-voltage mains, and their working environment temperature can reach above 100 °C. The SSL1750 plus the UBA3070's streetlight drive solution achieves 90% efficiency. NXP backlight driver switch mode DC-DC driver chip UBA3070 can support 600V output voltage, achieving more than 95% efficiency.
Optoelectronic News Network: What is the current competitive landscape of LED drivers in China? What is the market position of NXP?
Jin Yujie: NXP's LED driver products are in the leading position in indoor lighting, especially in dimming technology.
In terms of backlight driving, the current market is fiercely competitive. NXP's backlight driver products have advantages in efficiency and edge backlighting solutions. For example, our UBA3070 product, LED backlight for LCD TVs, has the advantages of high efficiency and high output voltage.
Optoelectronics News Network: In terms of backlight, there are edge backlight, direct backlight, RGB backlight, which technology do you like? What are the advantages and disadvantages? What is the future direction of development?
Jin Yujie: White-light edge backlight will be the mainstream in the short to medium based on its cost performance. RGB direct backlight will gradually occupy the mainstream with the improvement of LED light efficiency.
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