Introduction to constant current drive solutions for high-power LED lighting

LED, or light emitting diode, is a semiconductor solid-state light-emitting device. It uses solid semiconductor chips as light-emitting materials, and emits photons through the excess energy released by carrier recombination in the semiconductor, directly emitting red, yellow, blue, green, cyan, orange, purple, and white light.

LED is generally called the fourth generation lighting source or green light source. It has the characteristics of high energy saving, environmental protection, long life, small size, high brightness, etc. It can be widely used in various indications, displays, decorations, backlight sources, general lighting and urban night scenes. As a new lighting source, LED lights are gradually being used on a large scale and in a wide range. The excellent characteristics of LED lighting itself in terms of energy saving, long life, high energy efficiency, convenient and adjustable brightness are also in line with the current low-carbon and environmental protection trend. At present, LED lighting is widely and deeply used in LED backlight, LED advertising lights, LED curtain walls, high-power LED street lights, LED energy-saving lamps and fluorescent lamps, LED displays and other fields. It is expected that in the next few years, LED lights may gradually enter the fields of home lighting, indoor and outdoor lighting, and become an important lighting source.

The core part that determines the performance and life of LED lamps is the LED constant current drive circuit. The life of LED lamps (brightness attenuation) is related to the stability of the drive current and the current ripple or noise information. The reliability of LED lamps mainly depends on the reliability of the driver chip and various safety protection measures. As a professional power management chip designer, Xinlong Semiconductor provides a series of high-voltage, high-current, high-efficiency, high-reliability, and cost-effective LED constant current driver chips. In the field of high-current LED monolithic fully integrated constant current driver chips, Xinlong is in a leading position in the industry worldwide.

Xinlong Semiconductor's series of LED driver chips support multiple power supply methods such as AC power, DC regulated power supply, solar cells, electronic transformers, AC transformers, batteries, and vehicle power supplies; the output constant current drive LED power ranges from 10W to 100W; LED modules can be connected in series, in parallel, or in a combination of series and parallel; the circuit topology supports multiple structures such as buck, boost, and buck-boost.

Shanghai Xinlong Semiconductor is committed to developing high-voltage, high-efficiency, high-current, high-reliability, and cost-effective monolithic switching analog power management integrated circuits. It has developed a large number of high-voltage, high-efficiency, high-current, high-reliability, and cost-effective products, which are gradually introduced to the market and can be applied to most power supply fields and applications. For the huge LED lighting market, Xinlong Semiconductor has launched a series of LED driver chips that support a variety of power supply methods such as AC power, DC regulated power supply, solar cells, electronic transformers, AC transformers, batteries, and vehicle power supplies; the output constant current drive LED power ranges from 10W to 100W in the full range; LED modules can be connected in series, in parallel, in series and in parallel, and in a variety of other ways; the circuit topology supports

It supports multiple structures such as buck, boost, buck-boost, etc.; it has been widely used in LED lighting, LCD backlight, MR16 spotlight, LED light curtain wall, high-power LED street light, LED advertising light and other fields.