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Square LED Panel Lights Technical Details Determine The Square LED Panel Lights Design

Edit:Shenzhen Siosun Lighting Technology Co.,Ltd  Date:Aug 04, 2017

Square LED Panel Lights technical details determine the Square LED Panel Lights design
Square LED Panel Lights in the near future has been leap in the development of LED as a clean green light source has been widely recognized. LED light source long life, energy saving, simple and convenient application, the use of low cost, which will be in the home lighting applications will be massive, Yao Ming net survey in 2008 statistics, the global annual home lighting lamp holder shipments of about 50 billion One.
Lighting with LED light source VF voltage is very low, the general VF = 2.75-3.8V, IF in 15-1400mA; so LED driver IC output voltage is VFXN or VFX1, IF constant current at 15-1400mA. The LED light source used in the Square LED Panel Lights has two kinds of low power (IF = 15-20mA) and high power (IF> 200mA). The small power LED is used for LED fluorescent lamp, decorative lamp and grille lamp. To do home lighting, spotlights, underwater lights, wall lights, street lamps, tunnel lights, car work lights and so on. Power LED light source is a low voltage, high current drive device, the intensity of its luminous flow through the LED current size, the current is too strong will cause the LED light attenuation, the current will affect the LED light intensity, Drive need to provide constant current power supply to ensure the safety of high-power LED, while achieving the desired luminous intensity. In the field of Square LED Panel Lights, to reflect the characteristics of energy saving and long life, choose a good LED driver IC is essential, there is no good driver IC matching, the advantages of Square LED Panel Lights can not be reflected.
1. The nominal input voltage range of the driver chip should meet the DC8-40V to cover the needs of the application surface, the pressure can be greater than 45V better; AC12V or 24V input simple bridge rectifier output voltage will fluctuate with the grid voltage, Especially when the voltage is high when the output DC voltage will be high, the driver IC can not adapt to the wide voltage range, often when the grid voltage will be breakdown, LED light source has been burned.
2. The nominal output current of the drive chip is greater than 1.2-1.5A. As the LED light source for lighting, the 1W power LED light source has its nominal working current of 350mA, the 3W power LED light source has its nominal working current of 700mA, power Large need for greater current, so the Square LED Panel Lights selection of the drive IC must have enough current output, the design of the product must be driven IC in the full output of 70-90% of the best work area. The use of full negative output current driver IC in the narrow space of light cooling poor, easy fatigue and early failure.
3. The output current of the driver chip must be constant for a long time, the LED light source can be stable light, the brightness will not flicker; the same drive chip in the same conditions, the output current size as much as possible, that is discrete, Mass production line can be effective and order; for the output current of a certain discrete drive chip must be in the factory or put into the production line before the file, adjust the PCB board current set resistance (Rs) resistance size, so that The production of Square LED Panel Lights constant current drive plate on the same LED light source brightness consistent, to maintain the consistency of the final product.
LED green lighting to drive the chip to the innovative design development, Square LED Panel Lights lighting is inseparable from the driver chip, so need a variety of functions LED light source driver IC. Square LED Panel Lights selection of AC power below 36V can be considered non-isolated power supply, such as the use of 220V and 100V AC power supply should be considered isolated power supply. Direct use of AC100-220V driver chip, due to the application of demanding, technically there are higher requirements, greater difficulty, the current countries are trying to develop. Square LED Panel Lights the massive demand for the market to all integrated circuit design company once again the chance of success, rapid transformation, early product, win a lot of opportunities.