“The AC-DC lighting driver chip MT7910 is specifically designed for LED driver applications, with the industry's highest current accuracy of +/-1%, and the test value is +/-0.8%. There is no other international or Local companies can do this. Generally speaking, the current accuracy of similar solutions is about +/- 5%.†At the booth of Maxim Technology Co., Ltd., the company's CEO Cheng Baohong proudly said.
The MT7910 uses three patented technologies from MMC: current compensation, spread spectrum technology and LED open circuit protection. The AC-DC lighting driver chip has an input voltage range of 14VDC~450VDC or 85~265VAC. In addition to its high output current accuracy, it is small in size and high in efficiency, making it suitable for a variety of lighting drivers. At the same time, the product uses spread spectrum technology to reduce EMI and meet the EMI requirements of the product.
At present, the company's large-volume LED lighting driver products are DC/DC series LED constant current driver chip MT7200/MT7201. This series of chips adopts advanced system architecture, high system efficiency, and conversion efficiency can be as high as 97% or more. The MT7200 and MT7201 use two dimming techniques, PWM dimming and DC voltage emulation, which pass the EN55015 radiation and conduction test. Both products are suitable for LED spotlights, fluorescent lights, street lights, car LED lights and traffic lights. At the booth, the audience can also see the 2.4GHz wireless remote control LED light system demonstration. The company can provide a complete set of wireless remote control LED lamp solutions for the lamp factory.
As LED technology continues to mature and prices continue to fall, more and more LCD screens have chosen LEDs as backlights. For different requirements of large-size screen backlight applications, Cheng Baohong pointed out that large-size applications have high input voltages and require uniform backlighting. Medium-sized screens are mostly portable devices, such as GPS, which can be powered by a lithium battery. The input voltage is 2.7~6V, the output is high voltage, so it needs to be boosted. The large-size screen application is concentrated on HDTV, the input voltage is 40. ~60V. In addition, applications such as GPS can tolerate a little non-uniformity on the edge of the screen, but HDTV has very high requirements for display uniformity. The core backlight driver IC MT7004 developed by Mickey for the large screen size has the characteristics of high efficiency and strong driving capability.
"I believe that in the LED backlight and lighting market, Chinese local IC companies and system manufacturers have the ability to occupy a dominant position and have the ability to compete with American companies, not just price wars. Because unlike other technologies and applications, LEDs In the field of lighting technology and application, China is basically in sync with the international market, and China is the largest manufacturer of lamps. Chinese IC companies have local advantages.†Cheng Baohong is very optimistic about the LED backlight and lighting market prospects and is full of confidence. At the booth, he also introduced the logo and posters he designed himself, which is the goal and ideal of providing high-performance, energy-saving and environmentally-friendly design solutions to customers around the world.
In addition, Micron Technology also demonstrated the D-class audio amplifier series. Class D audio power amplifiers are more efficient than Class AB. The company's single-channel chip MT6802/MT6902 and dual-channel chip MT6822/MT6823/MT6824 feature high output power, high efficiency, good sound quality and low EMI interference. Ideal for a wide range of portable devices and small sound applications.
Maxic Technology Corporation is an analog and power management chip design company that develops high-efficiency processes for general-purpose lighting HB-LED driver chips, medium-sized LCD screen LED backlight driver chips, and Class D audio amplifiers. Power management chip, the product is mainly used in LED lighting, LCD TV, mobile phone, computer industry and communication field.
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