The power electronics industry in California is a dynamic landscape, home to diverse companies innovating in the creation and distribution of power supplies to multiple sectors. From healthcare to industrial technology to defense, the companies provide high-quality power solutions engineered for safety, effectiveness, and dependability. The keys to their offerings are AC-DC and DC-DC power supplies, motor drivers, battery packs, and conversion solutions, among others. As technology evolves, so does the industry, leveraging engineering expertise to tailor power solutions addressing complex system-level power challenges.


Top 25 power electronics companies in California

1. XP Power

  • Website: xppower.com
  • Headquarters: Singapore, California, United States
  • Founded: 1988
  • Headcount: 1001-5000
  • Latest funding type: Ipo
  • LinkedIn

XP Power is a company that specializes in providing high-quality power supply solutions to various industries. They offer a wide range of AC-DC and DC-DC power supplies, designed to meet international standards for safety, efficiency, and reliability. Their products are used in applications such as healthcare, industrial technology, railway, and defense & avionics.


2. Power Integrations

  • Website: power.com
  • Headquarters: San Jose, California, United States
  • Founded: 1998
  • Headcount: 501-1000
  • Latest funding type: Post Ipo Equity
  • LinkedIn

Power.com is a company that specializes in power electronics and solutions. They offer a wide range of products and services including AC-DC conversion, LED drivers, gate drivers, motor drivers, and automotive solutions. They cater to various industries such as appliances, computers and servers, IoT and smart home, meters and industrial, and more.


3. PHASIUM / Megmeet USA

Phasium Power is a leading supplier of power products, offering technically superior solutions for various industries. With a team of over 400 engineers, they have the expertise to custom design power solutions and provide assistance for complicated system-level power issues. They specialize in internal and external medical power supplies, high power telecom and server rectifiers, motor drivers, battery packs, and chargers. Their state-of-the-art facility in Zhuzhou, China allows them to deliver high-quality power products at industry-leading prices.


4. AMETEK IntelliPower, Inc.

  • Website: intellipower.com
  • Headquarters: Orange, California, United States
  • Founded: 1988
  • Headcount: 1001-5000
  • Latest funding type: Acquired
  • LinkedIn

Intellipower.com is a company that specializes in rugged UPS (Uninterruptible Power Supply) products and power conditioners. They offer a range of products such as frequency converters, power distribution units, and external battery chargers. With over 33 years of experience, they provide technical expertise and in-house development of proprietary electronics hardware and firmware. Their products are designed to meet military standards and are suitable for extreme environments. Intellipower aims to solve challenging power protection concerns for their customers.


5. Parade Technologies, Inc.

  • Website: paradetech.com
  • Headquarters: San Jose, California, United States
  • Founded: 2005
  • Headcount: 501-1000
  • Latest funding type: Ipo
  • LinkedIn

Parade Technologies is a leading provider of high-speed interface and display system ICs. They offer a complete portfolio of products that enable competitive capabilities for computer and display vendors worldwide. Their products are known for superior performance and compliance margin, ensuring interoperability and reliability. Parade Technologies is committed to moving the industry forward and developing components for the next generation of products.


6. Ten Pao International, Inc.

  • Website: tenpaoinc.com
  • Headquarters: Sunnyvale, California, United States
  • Founded: 1980
  • Headcount: 1001-5000
  • LinkedIn

Ten Pao is a world-class Hong Kong public traded manufacturer of power supply systems. With over 43 years of experience in the power adapter business, we offer a wide range of power conversion solutions. Our products are designed to meet international safety specifications and environmental standards, making us a leader in environmentally compliant products. We provide one-stop shopping for our customers, offering services from stamping, tooling, engineering, and supply chain management.


7. HALO Electronics

HALO Electronics is a company that specializes in providing solutions for PoE (Power over Ethernet) and Ethernet connectivity. They offer a wide range of products including LAN Ethernet transformers, FastJacks, telecom transformers, automotive Ethernet transformers, DC/DC transformers, digital audio transformers, and RF transformers. Their products are used in various applications such as automotive communication, MOST® isolation, and digital line interface. HALO Electronics is committed to delivering high-quality products that keep customers connected.


8. Johanson Dielectrics, Inc.

Johanson Dielectrics is a company that offers power electronic solutions. They specialize in the production and distribution of various types of capacitors such as ceramic chip capacitors, safety capacitors, and high voltage capacitors. Their products are used in a wide range of industries and applications, including telecommunications, automotive, and consumer electronics.


9. Calnetix Technologies

  • Website: calnetix.com
  • Headquarters: Cerritos, California, United States
  • Founded: 1998
  • Headcount: 51-200
  • Latest funding type: Series Unknown
  • LinkedIn

Calnetix specializes in variable frequency drives power electronics and high-speed rotating machinery supported on active magnetic bearings. They provide energy-efficient solutions for applications in air/gas movement, compression, fuel to power, pumping, turbocharging, and more. With a team of renowned experts, Calnetix's technologies improve system efficiency, reduce maintenance, and extend the life of machines beyond industry standards. They also have affiliate companies for technological innovations in lucrative markets.


10. NexGen Power Systems

  • Website: nexgenpowersystems.com
  • Headquarters: Santa Clara, California, United States
  • Founded: 2017
  • Headcount: 51-200
  • Latest funding type: Series Unknown
  • LinkedIn

NexGen Power Systems is a company dedicated to innovation in consumer and enterprise power systems. They use their breakthrough NexGen Vertical GaN technology to provide smaller, lighter, and more efficient power conversion solutions for a wide range of applications. Their product offerings include LED drivers, power supplies, and other power electronics solutions.


11. Eggtronic

  • Website: eggtronic.com
  • Headquarters: Long Beach, California, United States
  • Founded: 2012
  • Headcount: 51-200
  • Latest funding type: Series B
  • LinkedIn

Eggtronic is a company specializing in revolutionary power electronics and energy storage solutions.


12. Navitas Semiconductor

  • Website: navitassemi.com
  • Headquarters: Dublin, California, United States
  • Founded: 2014
  • Headcount: 51-200
  • Latest funding type: Post Ipo Equity
  • LinkedIn

Navitas Semiconductor is a pure-play, next-generation power semiconductor company that enables a high-speed revolution in power electronics. They offer GaNFast integrated gallium nitride (GaN) power ICs, GeneSiC silicon carbide power MOSFETs, and Schottky MPS diodes with best-in-class performance, ruggedness, and quality.


13. Transphorm Inc.

  • Website: transphormusa.com
  • Headquarters: Goleta, California, United States
  • Founded: 2007
  • Headcount: 51-200
  • Latest funding type: Post Ipo Equity
  • LinkedIn

Transphorm is a global semiconductor company that specializes in wide-bandgap GaN power electronics devices for high-voltage power conversion applications. They offer innovative products for power applications ranging from 30 watts to multi-kilowatts. With their GaN on silicon FET products, they provide industry-leading capabilities for higher voltage ratings.


14. Powertronix

Powertronix is a power solutions specialist that specializes in designing and manufacturing transformers, choke, and power supplies. They offer AC-DC power supplies and power distribution units.


15. Airity Technologies

  • Website: airitytech.com
  • Headquarters: Redwood City, California, United States
  • Founded: 2015
  • Headcount: 11-50
  • Latest funding type: Series Unknown
  • LinkedIn

Airity Technologies is a deep-tech startup specializing in power electronics. They are at the forefront of next-generation technologies, revolutionizing high-voltage power conversion. Their power supply units are significantly smaller and more power-dense compared to existing units. Their revolutionary circuits enable handheld devices and integrated power processing units, saving space and complexity.


16. MAGicALL, Inc.

  • Website: magicall.biz
  • Headquarters: Camarillo, California, United States
  • Founded: 2004
  • Headcount: 51-200
  • LinkedIn

MAGicALL designs and manufactures custom magnetic components, power electronics, and controls with higher efficiency, affordability, lighter, and smaller size.


17. Polyfet RF Devices

  • Website: polyfet.com
  • Headquarters: Camarillo, California, United States
  • Founded: 1984
  • Headcount: 11-50
  • LinkedIn

Polyfet is a company that specializes in semiconductor technology and designs and manufactures a wide range of high-performance power MOSFETs.


18. SemiQ

  • Website: semiq.com
  • Headquarters: Lake Forest, California, United States
  • Headcount: 11-50
  • LinkedIn

SemiQ is a company that designs, develops, and manufactures Silicon Carbide (SiC) Power Semiconductors, SiC Power Modules, and SiC Epi Wafers. They provide robust 650VDC SiC Schottky Diodes, SiC MOSFETs, and 3rd Generation SiC Diode Modules. Additionally, SemiQ offers power conversion application expertise and serves various end markets including Electric Vehicle Chargers, Power Factor Correction, Power Supplies, Solar Panel Inverters, Welding, Medical Equipment, and Motor Drives.


19. One-Cycle Control, Inc.

One Cycle Control is a company specializing in advanced power conversion solutions. They offer products and services related to grid voltage regulation, energy storage, micro grids, and power quality.


20. SL Power Electronics

  • Website: slpower.com
  • Headquarters: Ventura, California, United States
  • Founded: 1960
  • Headcount: 501-1000
  • Latest funding type: Acquired
  • LinkedIn

SL Power Electronics is a leader in designing and manufacturing differentiated internal and external AC/DC and DC/DC power conversion solutions.


21. Quality Transformer and Electronics

  • Website: qte.com
  • Headquarters: Milpitas, California, United States
  • Founded: 1964
  • Headcount: 51-200
  • LinkedIn

QT&E is a trusted industry expert in magnetics design and manufacture, offering a wide range of electronic components and assemblies. They specialize in transformers, power conditioners, SCR assemblies, and linear DC power supplies. With over 55 years of experience, they provide high-quality products and award-winning customer service.


22. Electrocube

Electrocube is a design manufacturer of electronic components and assemblies, offering a wide range of products such as film capacitors, RC networks, custom EMI Filters, lightweight foil transformers, and current transformers. They serve various industries including aerospace, heavy machinery, medical imaging, and commercial/industrial applications. With expertise in providing reliable products, new designs, service excellence, and compressed lead times, Electrocube is a trusted partner for engineers, OEMs, and contract manufacturers worldwide.


23. Integra Technologies, Inc.

Integra Technologies is a company that specializes in RF power solutions for radar systems. They offer a range of products including RF power transistors, power amplifier pallets, and GaN power solutions. With 25 years of experience, Integra Technologies provides high-performance and cost-effective solutions for both new designs and legacy systems.


24. Adaptive Power Systems Inc.

Adaptive Power Systems supplies programmable power supplies, electronic and regenerative DC loads, and frequency changers and AC sources. Their products are used for product development and testing.


25. GMW Associates

  • Website: gmw.com
  • Headquarters: San Carlos, California, United States
  • Founded: 1982
  • Headcount: 11-50
  • LinkedIn

GMW is a company that specializes in magnetic susceptibility measurement and offers a wide range of products and services related to this field. They provide hall magnetic and current sensors, magnetic field measurement equipment, electromagnets and coils, and precision permanent magnets, among other products. The company caters to various industries, including particle accelerators, magnetic resonance imaging, geosciences, power electronics, aerospace, and more.


Want to find more power electronics companies?


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