LED power supply is a type of power that is used to power the light emitting diodes otherwise known as LED. Its main task is to transform the power supply input type (AC or DC) to the required voltage and current for the operation of LEDs. As a semiconductor light-emitting device, LEDs have particular requirements for the power supply, including:

Constant Current Output: LEDs are very sensitive to current; additional or decreased amount of current can change the intensity of LEDs or harm them. LED power supplies are therefore normally designed to be always current controlled for the specified current to power the LED.

Efficiency: LED power supplies require to possess high efficiency so that the losses at the course of the conversion are low, and the temperature produced within the system is low as well.

Thermal Management: LEDs produce heat while in use, and hence when possible the power supply design should include provisions on how the heat produced can be dissipated to avoid any interference with the longevity of both the power supply and LED.

Electromagnetic Compatibility (EMC): Power supplied used in LED should have low electromagnetic compatibility to minimize interaction with other devices.

Dimming Capability: Some of the LED lighting applications involve dimming functions and the power supply should be compatible with analog or digital dimming technique such as resistor or voltage-based dimming DMX 512 or DALI etc.

Protection Features: LED power supplies should have protection against over voltage, over current, short circuits, and so on, in order to protect LED from being damaged due to malfunction of power supplies or some other abnormal status.

Longevity: LED power supplies should have a long service life since the use of LEDs has the general feature of long service life.

LED power supplies are used in almost all lighting areas such as indoor and outdoor lighting, landscape lighting, automotive lighting, etc. The several subcategories of LED power supplies are always being improved with the consistent improvement in the LED technology for better energy efficiency and functionality of the power supplies in their several applications.

Depending on the design and technical criteria, LED driver power supplies can be classified into several types. Here are some common classifications:

Constant Current Driver Power Supplies:
This is one of the most used LED drivers since it renders a fixed current that drives LEDs for illumination purposes irrespective of variations in the incoming voltage.

Constant Voltage Driver Power Supplies:
Stabilizes the output voltage but the value of the output current depends on the values of the forward voltage drop of the LED.

Isolated Driver Power Supplies:
Elimination of electrical noise and voltage surges to improve safety, used in outdoor lighting and high-quality, non-residential lighting applications.

Non-Isolated Driver Power Supplies:
They also have a simpler structure and are comparatively cheaper but do not have the isolation component and are confined to low voltage usage.

Built-In Driver Power Supplies:
Built-in directly in the LED lighting fixture to ensure condensed design and installation structure.

External Driver Power Supplies:
Mounted as a subassembly independent of the LED lighting fixture, in order to enable easy replacement.

Dimmable Driver Power Supplies:
Support dimming functions and compatible with several types of dimmers to obtain the process of brightness regulation.

Smart Driver Power Supplies:
Introduce smart control functionalities like DALI, DMX512, 0-10V and other kinds of smart lighting control.

Linear Driver Power Supplies:
This is a simple design but may not be efficient as there are other better designs such as the switch mode power supplies, but for the moment stick to a linear regulator to control the output current.

Switched-Mode Driver Power Supplies:
Most commonly used type of power LED lighting is a switch-mode power supply, well known for its high level of efficiency as well as good thermal management.

Waterproof Driver Power Supplies:
Intended for use outside or in regions with humidity, equipped with waterproof options.

Low-Voltage Driver Power Supplies:
Generally employed in systems of portable devices with battery power sources or low-voltage categories.

High-Voltage Driver Power Supplies:
This applies to LED lighting systems that are designed to take high-voltage input.

Thus, there are distinctions between LED driver power supply types and requirements and the specific use of each type. The ultimate driver power supply is typically chosen by designers in accordance with the necessity and frequency of lighting, cost estimates, and power efficiency needed and the specific installation context. Competing in the LED lighting market, the driver power supply designs are also developing in accordance with the new application requirements of LED technology.

Thus the drive power industry of China is ranked quite high in the global market because of such factors including relatively low manufacturing cost, well-developed industrial clusters, technological competency in research and development, and government policies. Apart from the large internal market, the industry exports a large amount to the global market mainly due to the high cost-effective ratio and technology. The application fields such as LED lighting and new energy vehicles have showcased that Chinese enterprises are powerful technologically. On the same note, the availability of talent capital and the establishment of an innovation hub offer a constant impetus toward the continuance of the industry’s evolution. As the logical result of adopting intelligent manufacturing, the degree of production efficiency and the quality of products have gradually been boosted and the competitive advantages of Chinese enterprises in the drive power industry continuously strengthen within the global context. Thus, being members of the international cooperation, Chinese drive power enterprises are in synergy with partners striving to develop industry potential together.

Inventronics Electronics (Hangzhou) Co., Ltd., established on September 5, 2007, is a high-tech enterprise engaged in the research and development, production, sales, and technical services of LED driver power supplies, with its sales scale ranking among the top globally. The company went public and was listed on the ChiNext stock market in December 2016 (stock code: 300582).

Headquartered in the High-Tech (Binjiang) District of Hangzhou, Zhejiang Province, the production base is located in the Tonglu Economic Development Zone. The company has subsidiaries in Europe, the United States, India, and Mexico, and has established offices in Southeast Asia, South Korea, Brazil, Shenzhen, and other places, building an independent global marketing and service network. Its products are sold in over 100 countries and regions worldwide, enjoying a high level of brand recognition and reputation both domestically and internationally.

With reliable product quality and technical services, the company’s LED driver power supply products are widely used in well-known domestic and international projects, such as the lighting of the Hong Kong-Zhuhai-Macao Bridge, the lighting of Qingdao Float Mountain Bay, the Statue of Liberty lighting project, the LED lighting of the San Francisco-Oakland Bay Bridge in the United States, the LED lighting of Shanghai Center, the LED lighting of Chongqing Grand Theater, the Yanqi Lake landscape lighting for the APEC 2014 Beijing Summit, the G20 Hangzhou West Lake LED lighting project, and the LED lighting of the Qingdao Jiaozhou Bay Bridge, etc.

While committed to developing reliable and intelligent LED driver power supplies, Inventronics is expanding its product categories and entering the field of new energy vehicle charging. The company will continue to promote innovation, adhere to quality standards, continuously enrich and expand its product line, and continue to guide the development of the industry with distinctive and differentiated products.

Shenzhen Sosen Electronics Co., Ltd. was founded in 2011, which is a national-level high-tech enterprise specializing in research, development, production, sales, and service of medium and high-power LED driver power supply. Its products include plant lighting, spot lighting for gardens, factories industrial lighting, landscape, and smart lighting for homes all over the world. The company made its initial public offering in June 2021 and was listed on the ChiNext stock market (stock abbreviation: The maintenance and updating company of the equipment is Songsheng Shares Co. Ltd (associated stock code: 301002).

Sosen Shares has directly taken the key technologies in LED driver power supplies independently; it owns an enterprise technology center; it has obtained the Guangdong Engineering Technology Research Center, Guangdong Industrial Design Center, and Shenzhen Enterprise Technology Center titles. On the same side, the company’s products support the safety certification of multiple countries and have purchased more than 200 product certification qualifications mainly for domestic CCC and foreign UL, ENEC, TUV, SAA, KC, BIS, etc.

Sensitive and rapid to market changes, constantly developing new technologies and products, and ensuring high quality of products, “Sosen Power” has always been a favorite of the market or clients with appellations such as “Shenzhen Famous Brand” and “Outstanding LED Power Brand”. In the future, Songsheng Shares will not only always stick to the social mission of “Creating an Outstanding Brand in Drive Power”, but also endeavor to offer efficient, energy-saving stable and reliable LED driver power supply products and techniques solutions to customers all over the world, with technological strength we will make the new revolution in LED lighting industry.

Shenzhen Sosen Electronics Co., Ltd. was founded in 2011, which is a national-level high-tech enterprise specializing in research, development, production, sales, and service of medium and high-power LED driver power supply. Its products include plant lighting, spot lighting for gardens, factories industrial lighting, landscape, and smart lighting for homes all over the world. The company made its initial public offering in June 2021 and was listed on the ChiNext stock market (stock abbreviation: The maintenance and updating company of the equipment is Songsheng Shares Co. Ltd (associated stock code: 301002).

Sosen Shares has directly taken the key technologies in LED driver power supplies independently; it owns an enterprise technology center; it has obtained the Guangdong Engineering Technology Research Center, Guangdong Industrial Design Center, and Shenzhen Enterprise Technology Center titles. On the same side, the company’s products support the safety certification of multiple countries and have purchased more than 200 product certification qualifications mainly for domestic CCC and foreign UL, ENEC, TUV, SAA, KC, BIS, etc.

Sensitive and rapid to market changes, constantly developing new technologies and products, and ensuring high quality of products, “Sosen Power” has always been a favorite of the market or clients with appellations such as “Shenzhen Famous Brand” and “Outstanding LED Power Brand”. In the future, Songsheng Shares will not only always stick to the social mission of “Creating an Outstanding Brand in Drive Power”, but also endeavor to offer efficient, energy-saving stable and reliable LED driver power supply products and techniques solutions to customers all over the world, with technological strength we will make the new revolution in LED lighting industry.

Eaglerise Electric Co. , Ltd. was established in the 1990s and is located in Foshan, China; the company has set up five manufacturing factories and five r&d facilities. The company continues to move forward, and its primary areas of specialization are the energy and information sectors; using the power electronics technology to offer products, solutions, and services in the international market, with the ambition of transforming into a modern technological vanguard corporation.

All the branches of Eaglerise operate on the basis of market and customer orientation; it has branches in Hong Kong, Shanghai, Shenzhen, Japan, the USA, Singapore, and Malaysia. It establishes and diversifies cooperatives that are beneficial in nature with its core customer groups across the globe.

Eaglerise was redirected as a public company and it has successfully listed its A-stock on 28 December 2017. It started digital transformation in 2018, which would further improve the creation of sustainable growth value for customers, employees and the society.

Guangdong Donepower Technology Co. , Ltd. was established in 2009 and previously was Zhongshan Guzhen Lingling Electronics Factory. As a result, it moved from Guzhen to Hengliang Town, Zhongshan City referred to as the “China Lighting Fixture Industry Base” in 2015 and was officially named Zhongshan Dongling Lighting Technology Co. , Ltd.; October 2020 officially renamed Guangdong Dongling Power Technology Co. , Ltd.

From 2011 to now, DONE Power has affirmed its brand-oriented business strategy and the main service brand as DONE Dongling Power. Over the past decade, the company has invested a great deal in introducing new technological solutions in the sphere of R&D, as well as in purchasing various kinds of precision R&D and testing equipment both domestically and internationally. Some of them are innovative reliability verification constructed by research centers and technical institutes for the development of the full-process simulation testing for the LED driver power supplies for DONE Power.

The domestic LED dimming power supply and control system manufacturer and service provider was founded in 2005 and is located in Shanghai Euchips.

The focus of Euchips is also based on a further increase in the intensity of innovation and new product and technology development: the scale of R&D staff has become the key value and now is already a third of the company’s staff. Euchips has a wide range of products that reach more than 100 countries and regions worldwide like to US, Europe, Oceania, the Middle East, and Asia.

Euchips is equipped with superior and sophisticated dimming system technology and its offered products are vast, hence, it popularly enjoys a high reputation in the market. In the aspect of the control systems, Euchips has successively entered the DALI organization and KNX organization, independently developed and manufactured DMX, DALI, 0-10V, silicon-controlled, and KNX dimming control systems for customers’ intelligent lighting.

Euchips Intelligent Hotel Lighting Application System. In the application of hotel management, customers show their satisfaction with Euchips intelligent control system as well as it has been widely used in various five-star high-end hotel projects of Pullman Hotel, Ritz-Carlton, Park Hyatt, Shangri-La, Jin Mao Kerry Hotel, Hilton, Sheraton, InterContinental, Hainan Qingshui Bay Holiday Hotel, Marriott and so on.

Besides this application, Euchips also integrates smart lighting systems for offices, large supermarkets, factories, high-end villas, and apartments. In the future, the company will be more Professional in the metro, tunnel, and commercial lighting industry fields, insisting on the corporate mission of “sincerity and innovation” to help develop the smart city.

Lifud was founded in 2007 and regards the enterprise spirit as ‘customer orientation and integrity in character, work, and products,’ and its strategic development goal as becoming the world’s leading supplier of LED drivers and intelligent systems. Focusing on optimizing the performance and stability of LED driver power and smart lighting system solutions, Lifud has the vision of bringing light to commercial, residential, industrial, and roadway areas in order to participate in and support the international trends for sustainable and people-centric lighting.

Lifud has its’ operational industrial parks in Zhongshan and Sichuan and it has three chief R&D centers in Shenzhen, Zhongshan, and Chengdu. It has established accredited UL and DALI laboratories and CNAS laboratory providing the highest quality service for its internal product demands and customers’ needs. The “Lifud LIFUD” brand has been rewarded with numerous distinctions, among which: “National specialized and new little giant enterprise”, “Shenzhen famous brand”, “Guangdong province famous trademark”, “Guangdong provincial engineering technology center”, “Sichuan province famous trademark”, “Sichuan provincial technology center”, “Best product award at the European LED professional seminar (LPS), ‘Top 10 intelligent power brands, ‘

Apart from these accolades, Lifud is still among the market innovators of energy-saving and smart illumination control systems. Lifud has an effective group of engineers, and the company’s work ethic has been established on the principles of quality, perfecting the technique of LED lighting production, and planning for a better future.