Hua Guichao: Challenges and new technologies for LED driver design
The semiconductor lighting industry is facing a rare historical opportunity. The output of LED packaging and application products in China has accounted for 70% of the world's total. The development of the LED industry is taking advantage of the development of the LED industry. It is actively developing in the direction of advantages, promoting technological progress and maturity of production processes, thus promoting China's semiconductor industry. The overall advancement of lighting technology has also played a crucial role in the arrival of the era of semiconductor lighting.
On August 30th, the 8th High-tech LED Industry Summit held in conjunction with the High-tech LED Boutique Exhibition was held in the Century Hall of the Shanghai International Convention Center. The technical section of the forum revolves around "LED Lighting Technology - Problems and Solutions", LED lighting design and application engineering - the theme of deciding the segmentation field, etc. The sapphire production process in the whole industry chain of LED, middle and lower reaches, LED epitaxial chip technology at home and abroad, phosphor, detection equipment, LED devices and modules, and OLED From the point of view to the topic, I shared a comprehensive key technology with the guests. Participants expressed that it was a very rare training and promotion opportunity.
Dr. Hua Guichao, Chairman of Infineon Electronics (Hangzhou) Co., Ltd. explains the importance of LED drivers from the life of the lamps is determined by the shortest life of the lamps and the failure of most of the lamps is driven. His vivid example is that if the chip is likened to the brain of an LED, the drive is its heart.
The efficiency of the drive is critical to the drive and has a triple impact: high efficiency reduces energy consumption, increases reliability, and increases life. Reliability and longevity are two related but completely different concepts. Reliability is a concept that a product is prone to problems within the normal life range; life is the normal use time of a product, and product failure occurs at a certain time. He believes that the life of the driver is generally determined by the electrolytic capacitor. When the capacitor is volatilized to 70% of the initial capacity, the life will be the end. For every 10 degrees drop in electrolysis and capacitor temperature, the lifetime will double. The industry believes that the longest life of electrolytic capacitors is 10,000 hours, and the theory that the life of the drive is 10,000 hours is not correct.
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