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This section provides an overview for switching power supplies as well as their applications and principles. Also, please take a look at the list of 15 switching power supply manufacturers and their company rankings. Here are the top-ranked switching power supply companies as of January, 2025: 1.Munich Electrification GmbH, 2.Applied Motion Products, Inc., 3.Wall Industries Inc..
Table of Contents
A switching power supply is a device that supplies DC power using a switching regulation method among DC power supplies.
General power supplies can be roughly classified into two types: the linear type, which is low-cost but heavy due to its simple circuit structure, and the switching type, which is compact due to the use of ICs. Due to their respective characteristics, the linear type is used for simple AC adapters, while the switching type is used for supplying power to electronic components in facilities.
Switching power supplies are used to supply power to industrial information equipment. In recent years, as electronic equipment has become more sophisticated, AC adapters have shifted from heavy linear systems to compact switching systems.
Furthermore, with the spread of USB power supplies, switching power supplies has become an indispensable component for supplying power to compact electronic equipment. In the industrial field, switching power supplies are widely used as components that stably supply DC power to drive control electronic components such as solenoid valves and sensors in automated equipment.
A switching power supply is a device that uses an AC power source such as 100 VAC as input, converts it to a DC power source such as 5 to 30 VDC, and stably supplies it.
The circuit configuration of a typical switching power supply is as follows:
This configuration makes it possible to obtain a stable DC power supply with constant voltage.
Rectifier is a generic term for an element that has the property of conducting current in one direction, while power supply is a generic term for a power source. A rectifier can be said to be an element that converts an AC power source into a DC power source. It is a diode or switching device that allows the current to flow in one direction.
There are two types of rectification: half-wave rectification and full-wave rectification.
Half-Wave Rectification
In AC circuits, positive and negative currents flow alternately, and "half-wave rectification" removes either the positive or negative current. The circuit configuration is simple and low-cost, but the efficiency is low and it cannot handle large currents.
Full-Wave Rectification
Full-wave rectification is a method that takes both positive and negative currents and changes them to a unidirectional current. This method is mainly used in switching power supplies. Compared to half-wave rectification, full-wave rectification is more efficient, and pulsation can be suppressed to a smaller degree.
Full-wave rectification includes a method that uses two diodes and a bridge circuit method that combines four diodes. Since the current after these rectifications is unstable, the output from the rectifier is combined with a circuit, such as a capacitor, for smoothing to remove pulsation and function as a power supply.
There are "external factors" and "internal factors" that cause failures in switching power supplies.
Failure Due to External Factors
In particular, the sudden application of high voltage due to lightning strikes destroys each element and other electronic components inside the power supply. To prevent these failures, it is effective to install protective circuit products such as surge killers.
Failures Due to Internal Factors
Internal factors are caused by the deterioration or failure of electrolytic capacitors, cooling fans, semiconductor components, etc. The usable life of a power supply varies greatly depending on the environment in which it is used, the time it is used, and other factors.
*Including some distributors, etc.
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Munich Electrification specializes in developing cutting-edge battery management systems, control and sensing components and an advanced software framework. By focusing on connected mobility and clean energy storage technologies, Munich Electrification aims to create a meaningful impact on everyone‘s life. Munich Electrification is a fast-growing electronics supplier founded with the aim of accelerating the transition to electric mobility and renewable energy generation. Our expertise lies in customized Battery Management Systems as well as standard BMS solutions, ensuring the perfect fit for every application. For our global customer base, we develop and produce innovative battery management solutions that are among the world-best regarding safety, features and costs.
Applied Motion Products, Inc. was established in 1978 and is a manufacturer of motion control components based in Morgan Hill, California, United States. The company manufactures various products such as power supplies, gearmotors, gearheads, integrated servo motors, and servo motor cables. The products have been used in various industries such as warehouse automation, autonomous mobile robots, life sciences, semiconductor, and packaging. The company has obtained ISO 9001 certification and have been operating under the compliance to RoHS, ATEX, CE, UL, and CSA.
Wall Industries, Inc. is a manufacturer of power supply solutions based in the USA. The company was established in 1961 and offers a comprehensive range of power supply solutions that encompass DC-DC converters and AC-DC power supplies. The company extends to both modified standard products and customized power solutions. Its products are used in a wide range of applications, including medical equipment, telecommunications infrastructure, industrial automation, military, railway, and more. These applications often require stable and efficient power conversion for proper operation.
Acopian, founded in 1964 in Easton, Pennsylvania, USA, is a manufacturer and supplier of quality power conversion products. The company specializes in offering a wide range of power supplies, including AC-DC power supplies, DC-DC converters, and custom power solutions. These products play a vital role in providing efficient power to various electronic systems and applications. Acopian's power solutions are utilized across industries such as aerospace, medical, and telecommunications. Emphasizing precision and performance, Acopian continues to be an ideal partner in delivering stable and dependable power solutions for critical applications.
ADVANCED Motion Controls, founded in 1987 and based in Camarillo, California, is a manufacturer and supplier of servo drives and motor controllers. Its product offerings include servo drives, the AxCent Drive Family for servo motor control, FlexPro and DigiFlex Performance Digital Drives for precise motor control, mounting cards for secure drive installation, and power supplies to provide necessary electrical power. Its 20-90 VDC Micro-Sized FlexPro servo drives received 3rd place in the Motion Control category at the 2023 Leap Awards, benefiting the engineering design industry.
LOVATO Electric S.p.A., founded in 1922 and based in Bergamo, Italy, is a manufacturer and designer of low-voltage electrical devices for industrial applications. The company offers a wide range of products such as Motor Protection circuit breakers, Contractors, electromechanical starters and relays, variable speed drives, and soft starters among others. The company holds UNI ISO 45001: 2018, ISO 1400: 2015, and ISO 50001: 2018 certificates. The company’s laboratories are certified to conduct type testing under ACAE control to issue ACAE certifications which are recognized by the European Union and valid across the wold.
TDK Corporation, established in 1935, is a manufacturer of electronic solutions for the smart society based in Tokyo, Japan. The company is a part of the TDK Group, which has over 250 locations in more than 30 countries worldwide and employs over 103,000 people. They offer a wide range of products, including sensors, power supplies, and magnetic application products. The robotics industry is evolving at a rapid pace, and they are now offering , a robot development platform equipped with a variety of sensors essential to the accurate operation of robots, enabling more efficiency across a wide range of robot development.
Wah Hing, founded in 1980 and headquartered in Dongguan, Guangdong, is a manufacturer of transformers and power switching supplies. The company offers a diverse product range, including a solar photovoltaic power generation system, PV three-phase isolation transformer, three-phase filter reactor, golf cart lead-acid battery charger, and portable EV charger. These products have applications in railway auxiliary power systems, UPS uninterruptible power systems, EPS emergency power systems, power distribution systems, and medical test equipment.
Autonics Corporation, established in 1977 and based in Busan, South Korea, is a developer and manufacturer of automation products, which are marketed worldwide. Some of its products include sensors, peripheral connection equipment, motion devices, control devices, and process automation instruments. The automation products are used in various industries, including automotive, packaging, machine tools, metal, and marine. The company has 12 international offices spanning over 100 countries, a fully automated warehouse system, and various international quality certifications, including RoHS, CE, UL, and EAC. Its safety products meet the functional safety standards IEC 61508 and mechanical safety standards ISO 13849.
Omron Corporation, started in 1933 and headquartered in Kyoto, Japan, is a manufacturer of automation components, equipment, and systems, and it developed the first contactless proximity switch in 1960. It has four domains, including industrial automation, electronic components, healthcare, and social systems, and it provides products and services in around 120 countries and regions. Some of its products include microsensing devices, access control systems, industrial robots, surveillance cameras, and blood pressure monitors. In 1971, it developed the first online cash machine, and in 1972, it established Japan’s first welfare factory.
Westermo, established in 1975 and based in Västerås, Västmanland, is a manufacturer and supplier of industrial Ethernet switches and data communications products for critical systems. The company's product range includes Industrial Ethernet Switches, Ethernet Extenders, Industrial Routers, Media Converters, and Wireless and cellular devices. These products play a vital role in ensuring robust data communications in physically demanding environments. It serves industries such as, notably Rail, Energy, Oil and Gas, Maritime and Offshore, and Water and Wastewater. To enhance its product offerings, Westermo provides good solutions such as Edge Network Solutions, WeOS, WeConfig, and Industrial Cybersecurity.
Powerbox International AB, established in 1974 and based in Hägersten, Sweden, is a manufacturer and supplier of power conversion systems. The company's product range includes AC/DC converters, DC/DC converters, battery charging systems, Din-Rail products, and open frame/enclosed systems. These products are used for maintaining a steady power supply in challenging environments such as underwater, airborne, or critical medical devices. They primarily serve the transportation, medical, defense, and industrial sectors. Additionally, the company offers component design, customer service, product lifecycle management, and environmental strategies.
ELKO EP HOLDING, SE., established in 1993, and located in Holešov, Czech Republic, is a manufacturer, distributor, and supplier of electronic equipment for residential, office, and industrial automation. The company offers a range of products including time relays, time switches, dimmers, controlling & signaling units, and thermostats, which serves in industries such as resindential, commercial, industrial, infrastructure, and transportation. Its products are used for efficient control and management of various electrical functions.
BRODERSEN, established in 1969 in Denmark, is a supplier of industrial process components for the process and automation industries. The company offers different wide products including earth leakage relays, digital multimeters, energy meters, alarm systems, and current and voltage transformers. These components support various industrial automation applications, such as panel builders, machine builders, and industrial process designers and suppliers. BRODERSEN also provides comprehensive services that encompass controls, monitoring, and remote controls for energy producers and consumers. The company aims to offer an optimum technical solution to the market through its advanced technologies.
RECOM Power GmbH, established in 1974, is a global supplier of electronic power converters, regulators, drivers, among other electronics, based in Gmunden, Oberösterreich, Austria. With a history spanning over four decades, they develop advanced modular isolated DC/DC and AC/DC power supplies, offering over 20,000 modules designed for diverse electronic applications. The company possesses ISO 9001:2015, ISO 14001:2015, ISO 45001:2018, DoC REACH, DoC RoHS2 samt 2015/863/EU, and numerous other certifications. Through rigorous testing and HALT procedures they are able to provide warranties ranging from 3 to 7 years.
Ranking as of January 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | Munich Electrification GmbH |
17.0%
|
| 2 | Wall Industries Inc. |
9.0%
|
| 3 | Applied Motion Products, Inc. |
8.5%
|
| 4 | LOVATO Electric S.p.A. |
8.5%
|
| 5 | Acopian Technical Company |
8.0%
|
| 6 | RECOM Power GmbH. |
6.6%
|
| 7 | ADVANCED Motion Controls |
6.6%
|
| 8 | Dongguan Wahhing Electrical Appliance Co., Ltd |
5.7%
|
| 9 | Westermo |
5.7%
|
| 10 | TDK Corporation. |
5.7%
|
Derivation Method
The ranking is calculated based on the click share within the switching power supply page as of January 2025. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
4 | 33.3% |
|
Sweden
|
2 | 16.7% |
|
Germany
|
1 | 8.3% |
|
Italy
|
1 | 8.3% |
|
Japan
|
1 | 8.3% |
|
Czech Republic
|
1 | 8.3% |
|
Denmark
|
1 | 8.3% |
|
Austria
|
1 | 8.3% |
78 products found - Page 1
78 products - Page 1
Japan INSDAC Co., Ltd.
80+ people viewing
Last viewed: 17 hours ago
Standard Response
■Features ・Compact casing design ・Double insulation ・Compatible with voltage of each country
Japan INSDAC Co., Ltd.
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Standard Response
■Features ・Compact casing design ・Double insulation ・Overcurrent protection ・Compatible with voltage of each country
Nippon Sokki Co., Ltd.
110+ people viewing
Last viewed: 6 hours ago
5.0 Company Review
■Summary ・Small size/Low cost ・Output mode: CV/CC ・Output capacity: 100W to 180W ・Wide range output ・Dropper + switching method ・Low ripple n...
Nippon Sokki Co., Ltd.
110+ people viewing
Last viewed: 10 hours ago
5.0 Company Review
■Summary ・Output mode: CC/CV ・Wide range output ・Output capacity: 100W to 600W ・Dropper + switching method ・Sequence function (panel operation...
Japan INSDAC Co., Ltd.
60+ people viewing
Last viewed: 21 hours ago
Standard Response
■Features ・Compact design ・Double insulation ・Overcurrent protection ・LED meter and bar graph indicator ・Compatible with voltage of each country
FranMar International Inc.
60+ people viewing
Last viewed: 20 hours ago
30W single output Class II open frame power supply. 2xMOPP medical safety certified. Leakage current <90uA and no-load consumption <0.1W ■Features...
Yagyu Shokai Co., Ltd.
70+ people viewing
Last viewed: 3 hours ago
Very Fast Response
■Features - The PSW series is a switching type DC stabilized power supply that can output a wide range of voltage and current within the maximum ra...
FranMar International Inc.
70+ people viewing
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60W ripple output open frame type medical power supply with short circuit/overload/overvoltage protection. ■Features ・Compact size of 4 inches x ...
IDEC Co., Ltd.
280+ people viewing
Last viewed: 16 minutes ago
Very Fast Response
■Features ・Compact size contributes to downsizing of equipment ・Suitable for operating ambient temperature of -25 to 70℃. It can be used in a wid...
S.C. Alliance Co., Ltd.
60+ people viewing
Last viewed: 5 hours ago
Standard Response
4.0 Company Review
■Summary ・Rack mount 1U duplex power supply for Digigram PYKO IN/OUT ・Two switching power supplies are built into the 1U size left half rack, and...
S.C. Alliance Co., Ltd.
60+ people viewing
Last viewed: 5 hours ago
Standard Response
4.0 Company Review
■Summary ・Duplicate power supply unit for Inovonics INOmini series ・It is possible to install two inovonics INOmini series on the device. ・Power...
Tokitrading
530+ people viewing
Last viewed: 6 hours ago
Fast Response
We handle many open frame power supply. Output 12V, 15V, 19V, 24V, 36V, and 48V embedded switching power supply is popular for the simultaneously c...
6 models listed
Custom Co., Ltd.
500+ people viewing
Last viewed: 17 hours ago
Standard Response
4.0 Company Review
■ DC stabilization power supply of slim body that can supply stable power. ・ The switching regulation method is adopted, and it is small, lightwei...
2 models listed
Japan INSDAC Co., Ltd.
40+ people viewing
Last viewed: 1 day ago
Standard Response
■Features ・Switching model ・Digital voltage and current adjustment, fine and coarse adjustment ・Voltage and current preset function ・4 sets of ...
Japan INSDAC Co., Ltd.
40+ people viewing
Last viewed: 17 minutes ago
Standard Response
■Features ・Switching model - Coded voltage and current adjustments, fine and coarse adjustments ・Voltage and current preset function ・CV/CC auto...
Japan INSDAC Co., Ltd.
30+ people viewing
Last viewed: 5 minutes ago
Standard Response
■Features ・450W power output ・Constant voltage and constant current ・Temperature control fan and overheating protection
Japan INSDAC Co., Ltd.
40+ people viewing
Last viewed: 4 minutes ago
Standard Response
■Features ・600W power output ・Constant voltage and constant current ・Temperature control fan and overheating protection
Japan INSDAC Co., Ltd.
50+ people viewing
Last viewed: 7 minutes ago
Standard Response
■Features ・AC power sine wave output ・Amplitude can be continuously adjusted ・Output frequency can be switched and line tracing function is incl...
Japan INSDAC Co., Ltd.
50+ people viewing
Last viewed: 9 minutes ago
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■Features ・Constant voltage and constant current ・AC power sine wave output ・Voltage and current can be continuously adjusted ・Output frequency...
FranMar International Inc.
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The FPM110 series compact open PCB construction AC-DC switching power supplies are specifically designed for medical applications. It can deliver 7...
Sanshin Electric Co., Ltd.
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Acon Co., Ltd.
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■Features ・320W, high performance power supply with built-in PFC circuit ・High performance power supply, high power factor, high efficiency ・Bui...
FranMar International Inc.
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55W lead acid battery charger with low battery protection (except ADS series) with short circuit/overload/overvoltage protection and DC alarm signa...
Nipron Co., Ltd.
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Maximum efficiency 94% High efficiency and high reliability DIN rail compatible 24V240W power supply (harmonica terminal type) ◼︎Overview ・Avoid ...
FranMar International Inc.
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Our FRA018 series complies with the latest standards IEC/EN/UL 62368-1 and 60950-1 suitable for IT and audio equipment. This series has 12~18WAC la...
Signflux Co., Ltd.
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Nipron Co., Ltd.
50+ people viewing
Last viewed: 19 minutes ago
Ultra-high efficiency board type DC-DC switching power supply (12V output, harmonica terminal block type) ◼︎Overview ・Supports DC120-410V input ...
FranMar International Inc.
70+ people viewing
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40~45W AC-DC open frame PSU with single, dual and triple outputs for ITE applications. Available in two sizes: 4"x3" and 5"x3". ■Features ・Univer...
Nipron Co., Ltd.
40+ people viewing
Last viewed: 4 minutes ago
Ultra-high efficiency board type DC-DC switching power supply (24V output, harmonica terminal block type) ◼︎Overview ・Supports DC120-410V input ...
