According to different power supply solutions for LED lighting applications

Compared with the traditional light source, light emitting diode ( 领导) Have many advantages, such as low working voltage, high energy efficiency, very small and generate directional light. They are able to provide extremely broad color and white light, does not produce infrared ( IR） Or ultraviolet ( UV） Radiation, and because they are solid state devices, on the machinery is very strong, and do not contain mercury, in the proper design and use can have more than 50000 hours of working life, far longer than standard incandescent lamp life 1000 hours. In addition, they also fully adjustable light. These advantages make the LED application more and more widely, market now has many applications, such as the architectural landscape lighting, traffic lights, display, retail, small and medium size LCD screen ( LCD) Backlit, cars and solar energy, etc. , and in street lighting, residential lighting and medium size LCD backlight has larger development space. High brightness leds for lighting design, the global energy saving and innovation is of great significance, the encouragement of solid-state lighting revolution is very important. Need a holistic approach to the revolution, in it, the LED and power conversion and control electronics and thermal management solutions with optical device integration. The application of LED lighting power supply solutions as mentioned above, the LED is essentially a low voltage devices; According to different color and current, the LED from the forward voltage of less than 2 v to 4. Between 5 v. In addition, the LED to constant current is used to drive, so as to ensure the required luminous brightness and color. This requires the corresponding power conversion and control solution can adapt to different power supply, communication lines, solar panels, 12 v car battery, dc power supply or low voltage ac system, and even based on alkali and nickel batteries or lithium ion battery. As a the world's leading supplier of energy efficient power semiconductor, semiconductor manufacturing focus on using their own low voltage and high voltage technology and expertise in power management solutions to deal with the challenges faced by LED lighting: whether it is a portable display products, automotive interior lighting or LED lamp ballast. In the following paragraphs, we will combine a variety of different application of LED lighting, such as construction, industrial, automotive and portable applications, discussing various semiconductor corresponding driving power supply solution.