The latest implementation of the EU NO.1194/2012 directive, the European Union has specific requirements for power factor. Especially for LED lamps above 25W, active power factor correction is the only solution certified by the European Union. The US Energy Star also puts a requirement on the power factor, which requires any residential > 5W LED lighting PF > 0.7, commercial LED lighting PF > 0.9.
Due to the low bandwidth characteristics of the PFC, the output voltage ripple is large, resulting in high current ripple. When the lamp is connected, the output capacitor has a large current impact on the lamp instantaneously, which is very likely to damage the lamp. The current de-ripple solution commonly used in the industry uses a two-stage Power Supply, but this solution is relatively expensive.
Dr. Remote, the deputy general manager of Jiehuaite Microelectronics, will bring the adaptive linear current source stroboscopic solution to the industry at the 2013 High-tech LED Conference. This solution can well remove 100/120HZ current ripple, automatically adjust the output current and pre-match, without additional inductance, capacitance, no switching, no EMI noise.
Experiments show that the adaptive linear current source has a significant advantage over the traditional Buck current source.
First, from the number of components, the number of components of the linear current source is only five, while the number of components of the traditional Buck constant current source is 8-10, including power inductors, diodes and capacitors. Although the ripple current can be <3%, the traditional Buck constant current source is very expensive, and the cost of using a linear current source can be reduced by at least 50%.
In addition to the ripple problem of the current power supply, the capacitor problem that affects the life of the power supply is still a short board that affects the development of LED lighting. Dr. Remote emphasized that the adaptive linear current source solution is also an electroless capacitor solution, and the capacitor will no longer be the bottleneck of the life of the lamp.
| The fourth game of the Hengfei Weiwei title: drive power and intelligent control | ||
| November 26th, 13:30-16:00 , Conference Room D, Hall 5, Guangzhou Poly World Trade Center | ||
| Moderator: Dr. Jin Peng Professor, Peking University Shenzhen Graduate School | ||
| Time Time | Topic | Speaker Speaker |
| 13:30-13:50 | Keynote Speech: High-voltage DC-powered LED lighting system 1. Introduction to the advantages and disadvantages of traditional LED lighting systems 2. High-voltage DC-powered LED lighting system principle 3. Comparison of advantages of high voltage DC power supply LED lighting system | Zhu Yibo Zhongheng Paiwei R&D Manager |
| 13:50-14:10 | Keynote speech: 1~7W MR16 small spotlights use solid capacitors instead of liquid capacitors 1. MR16 small spotlight application background 2. MR16 small spotlight common fault 3. Comparison of solid capacitors and liquid capacitors for MR16 small spotlights | Luo Wei Deputy Director, Emerald Technology Center |
| 14:10-14:30 | Keynote Speech: LED Wireless Intelligent Lighting Control Technology and Application 1. LED intelligent lighting 2. LED intelligent lighting technology 3. LED intelligent lighting solutions | Dr. Fu Xiaohui Huagao Core Source General Manager |
| 14:30-14:50 | Break time | |
| 14:50-15:10 | Keynote Speech: LED Dimming Power Supply 1. Status and technology development trend of dimming power supply market 2. Leading dimming power supply future product orientation and positioning | Liao Yuzhu Leading Semiconductor General Manager |
| 15:10-15:30 | Keynote Speech: No strobe scheme 1. European and American requirements for PF of lamps 2. No stroboscopic scheme design | Remote doctor Deputy General Manager of Jiewate Microelectronics |
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