Editor's note: Fairchild Semiconductor's Global Power Resource Center (GPRC) in China has developed a complete LED street lighting solution with high energy efficiency, excellent thermal performance and high reliability. Sex, can extend the life of street lamps.
Chen Kunhe, vice president of sales and marketing for Fairchild Semiconductor China and Southeast Asia, said: "Our Chinese GPRC team can provide solutions to meet the thermal management challenges commonly encountered in LED street lighting applications, achieving high efficiency and reducing Power consumption. High system efficiency depends on the performance of each part of the design, and our advanced PFC controllers and LLC ICs ensure maximum power consumption and higher efficiency."
The current of each LED string in the parallel solution is individually controlled, so that if one LED string is open, the remaining LED strings will still function properly. For serial solutions, each LED string has an independent open-circuit protection function. If one LED is open, the remaining LED strings will still work. In addition, if one LED is shorted, the constant current circuit ensures that all other LEDs in the parallel and serial sub-solutions work properly.
This new solution significantly reduces component count compared to traditional solutions, reducing the parallel layout by more than 20 components and the serial layout by 86 components. This solution is extremely reliable with fewer component counts, powerful protection features and higher fault tolerance for LED faults. In developing this total solution, Fairchild GPRC engineers selected a range of components from the company's extensive product portfolio, such as the active power factor correction (PFC) controller FAN7930 to perform boost PFC applications under CrCM. And with the highly integrated Fairchild Power Switch (FPS) product, the FSFR2100 provides all the features needed to build a reliable and robust resonant half-bridge converter.
In addition, Fairchild has a wide range of LED lighting solutions for applications ranging from 7W to over 100W, including:
PWM controllers, including stand-alone and highly integrated solutions with MOSFETs, such as the asymmetric half-bridge controller FSFA2100, the LLC resonant controller FAN7621, and the stand-alone LLC resonant controller FAN7621
Primary Side Regulation (PSR) PWM controllers (such as FSEZ1317, FSEZ1317, and FAN103) enable accurate constant current (CC) control and simplify circuit design
Wide range of high voltage MOSFETs, rectifiers and diodes
Chen Kunhe added: "At Fairchild, our first priority is to work closely with our customers to develop practical solutions. Fairchild's GPRC team in China brings innovative, energy-efficient LED lighting solutions to our customers. We are deeply proud of this. We have the latest IC technology and system expertise, and we are constantly providing technical support to our customers, enabling them to quickly deploy this new solution and introduce new LED lighting products to the market. Improve competitiveness."
Fairchild GPRC is a valuable resource for system design engineers, enabling them to quickly differentiate designs and reduce time-to-market. Fairchild's Global Power Resource Center is designed to deliver innovative, energy-efficient solutions for a wide range of applications, both locally and globally. The solution described in this paper was developed by GPRC in China, and Fairchild has a global power resource center in the US, Germany, Korea and Brazil.
The positive active material is mainly made of nickel, and the negative active material is mainly an alkaline battery made of cadmium.The nickel-cadmium battery used in AGV car has large internal resistance and can be used for large current discharge.Compared with other kinds of batteries, nickel-cadmium batteries can withstand overcharge or overcharge, and the operation is simple and convenient.The discharge voltage is somewhat different according to the discharge current. In general, the discharge termination voltage of about 1.2v nickel-cadmium battery is 1.0v /CELL, and the actual operating temperature ranges from -20 degrees to 60 degrees. In this range, the discharge can be repeated for more than 500 times.
Nickel Cadmium Battery,Nickel Metal Hydride Battery,Nickel Cadmium Rechargeable Battery,Nickel Cadmium Storage Battery
Xinxiang Taihang Jiaxin Electric Tech Co., Ltd , http://www.agvchargers.com