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This section provides an overview for power factor correction (pfc) equipment as well as their applications and principles. Also, please take a look at the list of 23 power factor correction (pfc) equipment manufacturers and their company rankings. Here are the top-ranked power factor correction (pfc) equipment companies as of March, 2025: 1.HILLHOUSE POWER SOLUTIONS, INC, 2.CUI Inc, 3.Neeltran, Inc..
Table of Contents
A power factor correction (PFC) equipment is a specialized controller used to manage PFC equipment, which plays a crucial role in improving the power factor of electrical systems.
The power factor represents the ratio of active power to apparent power in an AC circuit. When AC voltage is supplied to a system with capacitive or inductive loads, it can result in phase differences in input current and the distortion of the waveform, leading to the generation of harmonic currents that negatively impact the power factor.
PFC equipment, which includes a PFC circuit, is designed to mitigate these issues, bringing the power factor closer to 1. A PFC controller is employed to regulate and control the PFC circuit.
PFC equipment is essential in AC-DC converters, which transform AC commercial power into DC. In cases where electronic equipment has a low power factor, it imposes an additional burden on power companies and other suppliers, as they need to provide extra power beyond what the load consumes.
Furthermore, harmonic currents caused by low power factors can damage power transmission and distribution equipment. International standards, such as IEC61000-3-2, set limits for harmonic currents, and electronic devices must adhere to these regulations.
Therefore, the use of PFC equipment is crucial to ensure compliance with these standards and to improve the power factor.
Power factor correction begins with the rectification of AC voltage by a diode bridge in an AC-DC converter. The voltage is then smoothed using a capacitor and converted into DC voltage. However, during this process, a phase difference develops between the voltage at both ends of the capacitor and the current flowing through it, leading to a phase difference between input voltage and current.
Additionally, because no current flows during the period when the input AC voltage is lower than the voltage at both ends of the capacitor, and charging current only flows during the period when the input AC voltage is higher, it results in a distorted current waveform, generating harmonic currents. These phase differences and harmonic currents are detrimental to the power factor.
To enhance the power factor, a PFC circuit is inserted between the diode bridge and the smoothing capacitor. This circuit, which operates similarly to a boost-type DC-DC converter, controls the switching elements to shape the input current waveform closer to a sine wave.
The PFC equipment's circuit consists of components such as an inductor, a field effect transistor (FET), and a diode. The FET is a type of transistor that, when turned on or off, rapidly changes the current in the inductor. However, the inductor's property of slowing down current changes results in a triangular wave for the current. Repeated switching control ensures the current waveform approximates a sine wave, enhancing the power factor.
Two main PFC circuit methods exist: a single method with one set of switches and an interleaved method with two sets of switches that can suppress ripple current by operating them with a 180-degree phase shift. Additionally, there are two operating modes: continuous current mode (CCM) for high-power applications (200 to 500 W) and current critical mode (CRM) for medium-power applications (100 to 200 W). The selection depends on the specific purpose and application requirements.
*Including some distributors, etc.
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Incorporated in 1965, Analog Devices, Inc. designs, manufactures, tests, and markets integrated circuits (ICs), software, and subsystems that leverage analog, mixed-signal, and digital signal processing technologies. The company provides data converter products, power management and reference products for power conversion, driver monitoring, sequencing, and energy management applications in the automotive, communications, industrial, and high-end consumer markets. In addition, the company provides digital signal processing and system products for high-speed numeric calculations. It serves clients in the industrial, automotive, consumer, instrumentation, aerospace, and communications markets.
CUI is manufacturer of electronic components intended to create ease of access to power supply products. Established in 1989 and situated at USA The company offers PC adapters, wall plugs, board mounts and chassis mount as well as isolated and no isolated converters to clients. CUI Global is a publicly traded holding company devoted to maximizing shareholder worth through the acquisition and development of ingenious companies and technologies. From its GasPT2 platform targeting the energy sector, to its subsidiary the company is a elite digital power platform targeting the networking and telecom industries,
Pico Electronics was founded in 1967 and is headquartered in Pelham, New York. Pico is a developer of miniature and ultra-miniature electronics used in aerospace, power generation, and military applications. The company specializes in miniature transformers and inductors designed to work in extreme temperature environments ranging from -55°C to +85°C (-67°F to +185°F). Pico Electronics also specializes in continued miniaturization. Other product listings include DC-DC converters, AC-DC power supplies, and power factor-corrected modules. The company also produces QPL MIL Spec products to military grade specifications such as transformers and inductors.
Neeltran, which stands for New Energy Transformer and Rectifiers, is headquartered in New Milford, Connecticut. The company is now a part of AMSC and is an ISO-9001-2015 certified designer and manufacturer of its own rectifier transformers and DC rectifiers to customers around the world across diverse industries including aerospace, mining, and petrochemicals. In addition to transformers and DC rectifiers, the company produces reactors and inductors, and turn-key solutions. The company also offers repair, retrofit, rewind, and remanufacturing of rectifiers and transformers.
Applied Power Systems, Inc. (APS) was founded in 196 and headquartered in Hicksville, New York. Applied Power Systems is a power electronics company specializing in power conversion systems and thermal management of high power semiconductors. APS offers a large selection of high power thermal management products. These products include standard and custom aluminum extrusion heat sinks for natural convection and forced air-cooling. Cast and machined copper chill plates for liquid cooling. State of the art clamps for flat pack or hockey puck semiconductors. APS also offers driver circuit boards to drive SCR, IGBT and MOSFET devices.
HILLHOUSE POWER SOLUTIONS, INC, founded in 1999 in North Richland Hills, Texas, is an American supplier specializing in commercial and industrial energy efficiency products and services. The company's product portfolio includes power factor corrections, energy-saving products, and power quality solutions. These products serve various industries, including manufacturing, healthcare, data centers, government facilities, and more. The company also provides industrial energy services to its customers acting as a one-stop solutions provider for customized project implementation, consultation, turnkey design and installation.
Dietz Electric was founded in 1974 and is based in Milwaukee, Wisconsin. Dietz Electric is a broad-line stocking distributor offering electric motors, drives, and power transmission products. Dietz Electric also offers customization options to test, manufacture, modify, and repair all product offerings. Product offerings include electric motors, hazardous locations motors, custom electric motors, variable frequency drives, motor controls, power transmission solutions, and specialty items such as purge systems, Uras vibrators, disc brakes, transformers, and AC line reactors.
NXP was established in 2006 as a spinoff from Phillips and is headquartered in Eindhoven, Netherlands. The company is a co-founder of NFC communication and designs and manufactures semiconductors that serve the automotive, industrial, mobile, and smart home industries. The company’s automotive products include driver assistance transceivers, sensors, and security systems. For industrial markets, the company produces RFID readers, processors, and microcontrollers. For communication infrastructure, the company produces RF mixers, diodes, and low-noise amplifiers for wireless LAN networks. The company also produces peripherals, power management chips, communications chips, and interface devices.
Radiall, a global company founded in 1952, is a great manufacturer and supplier of interconnect solutions for industrial markets, including energy, sensors, and private communication networks. The company provides RF and fiber optic solutions, which offer support for intricate applications in the transportation, automation, and renewable energy industries. These applications encompass power plants, wind farms, and oil rigs. The company also collaborates with customers worldwide, delivering award-winning products and services. Leveraging its technical expertise and global existence, the company empowers people and drives the success of diverse industries.
Yantel, based in Shenzhen, China, is a company that operates as a manufacturer and supplier of telecommunication equipment and solutions. Established in 2003, the company specializes in designing and producing telecommunication equipment for various industries and application. The company's product includes various telecommunication equipment, including base station antennas, microwave antennas, and small cell solutions. These products are essential for enabling wireless communication and network connectivity in various environments. Additionally, the company has gained the ISO9001:2008 Quality Management System Certificate, the ISO14000 Environmental Management System Certificate, and GJB9001B-2009 Military Standard of Quality Management System Certificate.
Toshiba Electronic Devices & Storage Corporation is a division of Toshiba focusing on providing designs for end-product developers as well as semiconductor and drive equipment for automotive, industrial equipment, green energy, and consumer and personal electronic devices. Toshiba’s storage products include cloud-scale and enterprise-level products, and PC hard drives. Semiconductor products include Si Cower devices, MOSFETs, IGBTs, IEGTs, isolators, solid state relays, power management and intelligent power ICs, diodes, bipolar transistors, microcontrollers, automotive devices, ICs for wireless communication equipment, general purpose logic ICs, radio-frequency devices, sensors, and linear image sensors.
Schneider Electric S.E. is headquartered in Rueil-Malmaison, France, and has been operating since 1836. Schneider Electric provides a number of products and services including electrical car charging, energy management software, surge protection devices, load banks, servers and HMIs, valve and valve actuators, feeder automation, grid automation, and SCADA software products, data center cooling and software, home automation and security, light switches, motion control and robotics, signaling units, solar and energy storage, RFID systems, as well as other hardware, services, and software.
Kane Engineering Ltd, established in 1971 and located in Newtonards, Northern Ireland, is a manufacturer and supplier of low voltage switchgear. The company's product portfolio includes low-voltage switchboards, power factor correction equipment, power distribution units, panel boards, and packaged substations. The company's products are applied across diverse sectors, including the transportation industry, renewable energy, telecommunications, commercial and retail, and various other industries. The company offers a comprehensive range of customized low-voltage switchgear solutions to industrial and commercial clients across the United Kingdom and Ireland.
Sunpower Group Holdings Ltd., founded in 1995 in Aldermaston, Berkshire, United Kingdom, is a manufacturer and supplier of power solutions. It offers eleven product segments: LED lighting, power inverters, battery charges, DC-DC converters, and open-frame power suppliers. The company is ISO-9001 and ISO-14001 certified and serves various industries such as gaming, farming, and harvesting rainwater with power supplies. The company also provides various services, including power supply applications, technical support, personalized PSU design, and customization of power supply.
Watford Control Instruments Ltd., established in 1947 and based in Watford, United Kingdom, is a manufacturer and supplier specializing in the production of voltage stabilizers. The company's range of voltage stabilizers includes solid-state stabilizers and electromechanical stabilizers. These products are utilized across industries, including renewable energy providers, OEM (Original Equipment Manufacturer) customers, street furniture, electric vehicle (EV) charging, and distribution network operators (DNOs). The company offers customer support and after-sales services including global equipment support, training, spares, and warranty service.
ST Micro Electronics is a global semiconductor company serving customers with innovations to have a positive impact on people's lives. Their product line is micro electronic systems, such as switches, controllers, sensors and drivers. The main selling point of ST Micro Electronics is its provision of sustainable products, and introducing their electronics to create a more sustainable world. The company, as well as providing the electronic devices, also provides software and support, ensuring that all fields are covered to provide a fully provide a supported and strong relationship with their customer base. ST Micro Electronics believe that technology plays a key role in helping to solve environmental and social challenges, which is why their semiconductor technologies start with their employees, their customers and partners.
Electronics-tutorials.ws is a free and premium online resource that provides comprehensive tutorials in electronics. Founded by Ken Shirriff in 1997, the website has become one of the leading platforms for electronics education. The site offers tutorials on a range of topics, including basic electronics, digital and analog circuits, and even RF electronics. Each tutorial is crafted with clarity, supplemented by diagrams and illustrations. An interactive forum also allows for user engagement and Q&A. With over 120 quality tutorials and a strong user community, Electronics-tutorials.ws serves as a valuable educational platform for those interested in electronics.
Fuseco Power Solutions Pty. Ltd., an Australian company founded in 1996 and headquartered in Cheltenham, Victoria, is a distributor specializing in electrical products. The company’s range of electrical products includes fuses, protection relays, test equipment, current transformers, and EMC chambers. These electrical products cater to various industries, including transportation, industrial manufacturing, construction, renewable energy, and the electrical and electronics industry. The company imports and distributes specialized electrical products within the markets of Australia and New Zealand. The company provides customer services, including technical support, a price guarantee, a delivery guarantee, and a response guarantee.
Lingto Electronic Limited is a distributor of electronic components and wireless modules that was incorporated in 2022 in Hong Kong, China. The company stocks passive and active electronic components from brands such as Xilinx, Fairchild, and Altera, These include power management devices, logic integrated circuits, and electrolytic capacitors. It also offers wireless and GPRS modules, such as cell jamming detectors, vehicle tracking chips, and text-to-speech (TTS) modules. The company mainly markets to clients in electronic manufacturing, networking, and telecommunications operations.
Grid Solutions, established in 1892, is a global producer and distributor of GE Renewable Energy solutions headquartered in Boulogne-Billancourt, France. The company is a part of GE Vernova with over 12,000 employees offering equipment, systems, and services to power utilities and industries, ensuring efficient power delivery from generation to consumers. These include Power Electronics, High Voltage Equipment, Automation & Protection, Software Solutions, and Projects & Services. Addressing the challenges of the energy transition, Grid Solutions provides safe integration of renewable and distributed energy into the grid using HV/MV equipment, gas-insulated substations, and more.
Hybrid Electronics is a global distribution specialist of electronic components, with access to over 50 million unique components. Among the markets HE serves are the aerospace, automotive, communications, defense, industrial, medical, national security, and test & measurement industries. In addition to components, HE also provides quality and compliance testing, counterfeit detection, upscreening, and other forms of quality control. Examples of component subtypes that HE offers include ICs, batteries, capacitors, semiconductor products, sensors, circuit protection, interconnectors, filters, optoelectronics, relays, switches, power supplies, and cables and cable assemblies.
Ranking as of March 2025
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | HILLHOUSE POWER SOLUTIONS, INC |
12.0%
|
| 2 | CUI Inc |
10.2%
|
| 3 | Neeltran, Inc. |
8.3%
|
| 4 | Pico Electronics |
7.9%
|
| 5 | Dietz Electric Co., Inc. |
6.9%
|
| 6 | Applied Power Systems, Inc. |
6.5%
|
| 7 | Analog Devices, Inc. |
5.6%
|
| 8 | Kane Engineering Ltd |
5.1%
|
| 9 | Watford Control Instruments Ltd. |
5.1%
|
| 10 | Sunpower Group Holdings Ltd |
4.2%
|
Derivation Method
The ranking is calculated based on the click share within the power factor correction (pfc) equipment page as of March 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
|
7 | 41.2% |
|
United Kingdom
|
3 | 17.6% |
|
France
|
2 | 11.8% |
|
Japan
|
2 | 11.8% |
|
Netherlands
|
1 | 5.9% |
|
China
|
1 | 5.9% |
|
Australia
|
1 | 5.9% |
39 products found
39 products
Sanshin Electric Co., Ltd.
120+ people viewing
Last viewed: 17 hours ago
Standard Response
■Summary SSC2102S is a control IC for discontinuous current type (Discontinuous Conduction Mode) interleaved power factor correction converters. 2-...
Hakaru Plus Co., Ltd.
200+ people viewing
Last viewed: 1 day ago
■What is an automatic power factor regulator? An automatic power factor regulator is a device that automatically controls the turning on and off of...
Fuji Electrode Industry Co., Ltd.
90+ people viewing
Last viewed: 10 hours ago
Fast Response
5.0 Company Review
It makes the input current waveform sinusoidal and reduces and suppresses harmonics generated from the inverter. It also helps improve the power fa...
SUMIDA
100+ people viewing
Last viewed: 2 hours ago
Sumida offers a wide range of PFC chokes specifically designed for active PFC circuits in switching power supply applications.
Shoei Electronics Industry Co., Ltd.
110+ people viewing
Last viewed: 1 day ago
■Summary - Both the lagging power factor and leading power factor can be varied continuously in the range of 0.1 to 0.98. ・For three-phase (3U ser...
Shoei Electronics Industry Co., Ltd.
80+ people viewing
■Summary - Both the lagging power factor and leading power factor can be varied continuously in the range of 0.1 to 0.98. -Single phase (U series) ...
Shoei Electronics Industry Co., Ltd.
70+ people viewing
AC simulated inductive load device Variable power factor load device
Monolithic Power Systems, Inc.
10+ people viewing
■Summary HR1204 is a high-performance controller that integrates an advanced digital PFC controller and a half-bridge LLC resonant controller. The ...
Monolithic Power Systems, Inc.
20+ people viewing
■Summary The HR1210 is a multimode PFC and current mode LLC combo controller controlled via a UART interface. This power-saving device provides opt...
Monolithic Power Systems, Inc.
20+ people viewing
■Summary The HR1211 is a multimode PFC and current mode LLC combo controller that is configurable via a UART interface. Power-saving technology ena...
Monolithic Power Systems, Inc.
20+ people viewing
Last viewed: 12 hours ago
■Summary HR1213 is a multimode PFC and current mode LLC combo controller that can be controlled via a UART interface. Power-saving technology incre...
Monolithic Power Systems, Inc.
10+ people viewing
■Summary The HR1215 is a multimode PFC and current mode LLC combo controller controlled via a UART interface. Power-saving technology optimizes eff...
Monolithic Power Systems, Inc.
10+ people viewing
■Summary HR2000 is a fluorescent lamp ballast controller with PFC function and high voltage half-bridge driver. Using only 16 pins, it provides a c...
Monolithic Power Systems, Inc.
20+ people viewing
Last viewed: 20 hours ago
■Summary The MP4027 is a primary-side controlled offline LED controller that provides high power factor and accurate LED current for isolated singl...
Monolithic Power Systems, Inc.
10+ people viewing
■Summary The MP4026 is a primary-side controlled offline LED controller that provides high power factor and accurate LED current for isolated singl...
Monolithic Power Systems, Inc.
20+ people viewing
Last viewed: 17 hours ago
■Summary MP4054A is an offline LED lighting controller with primary side control. A small TSOT23-8 package provides high power factor (PF) and accu...
Monolithic Power Systems, Inc.
20+ people viewing
Last viewed: 9 hours ago
■Summary The MP44010 is a boundary conduction mode PFC controller that can provide simple and high performance active power factor correction using...
Monolithic Power Systems, Inc.
20+ people viewing
■Summary The MP4031 is a triac and analog dimmable primary controlled offline LED lighting controller with active PFC. A single-stage converter can...
Monolithic Power Systems, Inc.
20+ people viewing
Last viewed: 10 hours ago
■Summary The MP44011 is a boundary conduction mode PFC controller with internal harmonic injection. Achieves simple, high-performance active power ...
Monolithic Power Systems, Inc.
20+ people viewing
■Summary The MP4032-1 is a triac dimmable primary-side controlled offline LED lighting driver with a built-in 500V MOSFET. High power factor and ac...
Monolithic Power Systems, Inc.
20+ people viewing
■Summary The MP44014 is a boundary conduction mode PFC controller that provides simple, high performance active power factor correction using minim...
Monolithic Power Systems, Inc.
20+ people viewing
Last viewed: 20 hours ago
■Summary The MP4033 is a triac dimmable primary-side controlled offline LED lighting controller with active PFC. It can also be used in application...
Monolithic Power Systems, Inc.
20+ people viewing
■Summary The MP44014-A is a boundary conduction mode PFC controller that provides simple, high-performance active power factor correction using min...
Monolithic Power Systems, Inc.
20+ people viewing
■Summary The MP4060 is a triac dimmable primary-side controlled LED controller that provides a single-stage AC to DC LED driver with excellent dimm...
Monolithic Power Systems, Inc.
30+ people viewing
Last viewed: 1 day ago
■Summary The MP44018A is a CRM/DCM multimode PFC controller that provides simple, high performance active power factor correction using minimal ext...
Monolithic Power Systems, Inc.
20+ people viewing
Last viewed: 17 hours ago
■Summary The MP44019 is a CrM/DCM multimode PFC controller that provides simple, high performance active power factor correction using minimal exte...
Monolithic Power Systems, Inc.
20+ people viewing
Last viewed: 10 hours ago
■Summary HR1203 is a high-performance controller that integrates an advanced digital PFC controller and a half-bridge LLC resonant controller. The ...
