Enhance the reliability of LED lighting system strategy secret

To create a smart lighting system with energy saving and high efficiency, using MCU and adjustable optical drive for sensing the environment, efficient dimming is popular LED lighting system design trend nowadays, in addition, optical simulation and heat dissipation is also an integral part of the development to ensure the reliability and safety of the LED.

Design and system simulation circuit is the key to achieve two success of LED intelligent lighting system, which in the circuit design to join the micro controller (MCU), not only can all-weather monitor LED device and immediate return abnormal conditions, but also for the group to control the lighting equipment to adjust energy, make the lighting system more intelligent; and in order to strengthen the stability of the LED light source, the design of adjustable light into the drive circuit, can solve the problem of light blinking, and enhance the efficiency of energy use.

On the other hand, through the simulation process of optical and radiation to verify the feasibility of the product is more important, this can not only ensure the safety of the product, in the simulation process, the development of more products can accelerate the process, enhance the market competitiveness.

The realization of smart lighting systems play a central role in MCU

With the increasingly widespread use of LED, the application is more and more diverse, including the wisdom of the lighting business opportunities are more expected by the industry. In order to build a LED intelligent lighting system, import MCU can realize the automatic brightness adjustment, automatic color transformation, environmental sensing, and group system control functions, enrich the application of LED lighting, and improve the efficiency of energy use.

Infineon Senior Application Engineer Zhu Dansen said, MCU allows LED lamps to achieve intelligent lighting system, fully improve the efficiency of energy use and rich LED multi application.

Control and change the past LED lamp lack, even though LED has been compared with the traditional halogen lamp, incandescent lamp is more durable, but in use for a long time, the light output of LED will be aging and temperature effects of the recession, resulting in the electric lamp device is easy to damage, so the reliability is greatly reduced, and the defects cannot dimming also the energy use efficiency is not clear, the above factors will lead to LED service life is shortened, and the application, will be unable to change light appear more tedious.

Zhu Dansen further pointed out that, in order to achieve dimming control, color transformation and efficient use of energy resources, will import the MCU LED lamp can make indoor lighting, outdoor lighting, decorative lighting, emergency lighting and application of more changes, such as control of LED lights in a day, according to each different time or adjust the brightness to save energy. Through the MCU in the digital addressable lighting interface (DALI) for remote control and monitor group, LED device is still in normal operation, in order to inform the engineering personnel to quickly repair, these new applications are no longer just let LED lights on and off, can use more flexible.

It is understood that, in order to seize the smart lighting market Infineon LED layout, were launched XC835 and XC836 two MCU two MCU, the number and size of pin in different, the biggest difference is that XC836 has support for DALI, can do remote control system for the wisdom of LED lamps, and XC835 is not supported. In addition, the two can support touch control, and have a high heat resistance (150 degrees Celsius) and high reliability characteristics. At present, the series MCU is mainly used in the entertainment decorative lighting market in the common T4, T8 and other small and medium-sized fluorescent tube and bulb.

For entertainment type decorative lighting market, because the entertainment performances content not only pay attention to the wisdom of automatic resplendent with variegated coloration, dimming of LED lighting lamp life, luminous efficiency and light stability is also adjustable optical drive requirements, so in order to solve these problems, the beginning is designed to lighting system.

LED lighting efficiency adjustable optical driver behind

Governments for energy requirements increasingly stringent, prompting demand for LED lighting dimming temperature increase, to achieve efficient dimming and solve the flicker problem, TI (TI), published before two phase integrated light adjustable AC to DC (AC-DC) LED lighting driver, can fully meet the modified light bulb (Retrofit Bulb), LED (Ballast), light stabilizer (Downlight) and light (Spot Light) dimming requirements of lamps.

TI Asia analog market development of power supply applications Senior Application Engineer Xiao Yizhou said that the built-in adjustable optical power supply IC LED will soon be able to replace the traditional light bulb.

Although the traditional light bulb can also be dimming, but more power consumption and short service life, resulting in adjustable light bulbs must be regular maintenance. Introduction of tunable optical power drive integrated circuit (IC) of the LED lamp, not only take into account the LED advantages compared with traditional light bulbs 80%, service life of at least twenty thousand hours, can adjust light, improve energy efficiency, accelerate energy-saving LED lighting to replace traditional lighting.

As the flag of energy-saving LED lighting market, TI has launched the TPS92070/LM3448 series of adjustable optical scheme, the upper bound of current high precision characteristics can be defined accurately for current customers, eliminating the customer does not stop the correction time and cost, and because of its high performance structure, can reduce the driving support around IC parts. To further reduce the cost of customers.

Xiao Yizhou further pointed out that the current TI a series of adjustable light driven IC are mainly exported to Japan, Europe and the United States and other countries, and also day standard different, IC driver required specifications are not the same. For example, TPS92070 because of its structural design for isolation, high security, in line with the U.S.