New HPHF Transformer from Murata Comes with pdqb Winding Technology

Press Release Summary:

  • Offers high power, high frequency operating around 4-50 kHz with power ratings from 30 kW to 400 kW and comes with turns ratios from 1:1 to 10:1
  • Features patented pdqb winding technique that overcomes the skin and proximity effects as well as other high frequency losses associated and delivers efficient (>99.5 %) solution in a compact footprint
  • Ideal for applications including eV/HeV fast charging, railway, renewable energy, smart grid energy distribution and x-ray and MRI systems

Original Press Release:

Murata Announces Innovative New Transformer for High Power, High Frequency Applications

Hoofddorp, Netherlands: Murata has announced a new transformer technology for high power, high frequency applications that uses a novel winding technique to allow designers to efficiently reach power and frequency levels that were never possible with conventional winding methods.

Murata’s innovative and patented pdqb winding technology makes it possible to construct high frequency transformers of up to and over 400 kW that can operate at frequencies as high as 50 kHz. The pdqb winding technique overcomes the skin and proximity effects as well as other high frequency losses associated with conventional construction methods, delivering an efficient (>99.5 %) solution in a compact footprint.

There are a number of further benefits to the winding technique including an increased working voltage and elevated isolation voltage (up to 10 kV). The leakage inductance is highly controllable and interwinding capacitance is low, both of which enhance performance in customer’s designs.

Thermal performance is also improved, eliminating the space requirements and cost associated with heatsinking. Each design can be optimized by a combination of Murata’s transformer expertise and their own simulation software.

Murata is able to design custom high power, high frequency transformers operating around 4-50 kHz with power ratings from 30 kW to 400 kW. The transformers can be designed with turns ratios from 1:1 to 10:1 having multiple secondary windings if desired, and are capable of handling input and output voltages in the range 50 V to 1 kV. A 100 kW transformer fits within an ultra-compact 18 cm x 21 cm x 25 cm package size.

Commenting on the release, Andrea Polti, Global Product Manager, Murata said “More than just launching a series of standard transformers, the HPHF solution really showcases a technology capability that allows us at Murata to provide customized solutions to meet or exceed specific customer requirements.”

Transformers using the pdqb winding technology are ideally suited to challenging applications including eV/HeV fast charging, railway (both rolling stock and trackside), renewable energy, smart grid energy distribution and medical applications including x-ray and MRI systems.

For further information and reader enquiries:

Dunya Kamil,

Murata Electronics Europe B.V.,

Wegalaan 2, 2132 JC, Hoofddorp, The Netherlands

Tel: +31 (0) 23 56 98 456

Fax: +31 (0) 23 56 98 361



Agency contact:

Rachel Sandeman,

Publitek Limited,

18 Brock Street,

Bath, BA1 2LW, United Kingdom

Tel: +44 (0) 2038 136425



About Murata

Murata is a leading manufacturer of electronic components, modules, and devices. The complete range includes ceramic capacitors, resistors/thermistors, inductors/chokes, timing devices, buzzers, sensors and EMI suppression filters. Whilst the company is known as a global ceramic capacitor manufacturer, it is also a world leader in Bluetooth® & WiFi™ Modules, board-mount DC-DC converters and is a key manufacturer of standard and custom AC-DC power supplies.

Established in 1944, Murata is headquartered in Japan and has European offices in Finland, France, Germany, Hungary, Italy, the Netherlands, Spain, Switzerland and the UK.

For more information on Murata, please visit: You can also follow us on Twitter @MurataEurope or LinkedIn, or join us on Facebook at

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