TDK enables 1250 v dc converters with high-voltage common-mode choke

CONVERTER DESIGNS TDK enables 1250 v dc converters with high-voltage common-mode choke

2026-04-17 From TDK 1 min Reading Time

Related Vendors

Rogers Corporation

MERSEN France SB

PCIM

TDK Corporation has presented the B82722V6*B040 series of new compact high-voltage, current-compensated ring-core double chokes. Designed primarily for rated DC voltages of up to 1250 V (630 V AC), these compact common-mode chokes (23 x 15.5 x 24 mm) effectively suppress EMI in next-generation applications. These include power converters, industrial motor drives, and switch-mode power supplies that often deploy SiC and GaN power semiconductors and feature elevated DC bus voltages, where insulation coordination and PCB space are critical.

TDK’s new high‑voltage common‑mode choke enables compact 1250 V DC converter designs with effective EMI suppression.(Source: TDK) — TDK’s new high‑voltage common‑mode choke enables compact 1250 V DC converter designs with effective EMI suppression.
(Source: TDK)

The series covers nominal inductance values ranging from 3.3 mH to 22 mH, with rated currents between 0.85 A and 3.0 A at a rated ambient temperature of +70 °C. Multilayer solid insulation construction and testing with voltages of 3,750 V (line-to-line) ensure robust electrical isolation. Thanks to the special automated winding technique, these chokes feature high resonance frequency characteristics and a typical stray inductance of around 0.6%, helping to suppress symmetrical interference.

The epoxy coating of the ferrite core and the plastic header comply with UL 94 V-0. The design fulfills the latest IEC 60938-2 and IEC/UL 60939-3 safety requirements for EMI chokes and filters. Suitable for wave soldering and offered in a compact vertical design, the B82722V6*B040 series enables engineers to realize 1250 V DC high-voltage architectures without increasing the PCB footprint.

The BCM6135 is a breakthrough bidirectional 800V-to-48V DC-DC converter that enables lighter, smaller and more efficient power delivery networks in electric vehicles. Its compact size can reduce power system volume by nearly 50%. (Source: Vicor)

Main applications

Suppression of common-mode interference

Compact switch-mode applications

Frequency converters

Main features and benefits

Very high voltage rating

High resonance frequency due to special winding technique

Approx. 0.6% stray inductance for symmetrical interference suppression

Space-saving design

Suitable for wave soldering

Design complies with IEC 60938-2 (630 V AC, 50/60 Hz, PIII; 1250 V DC-link, PII)

RoHS-compatible

PCIM Expo & Conference 2026: Join the leading industry event!

From 9 – 11 June 2026, we’re taking off into the future of power electronics at the PCIM Expo & Conference in Nuremberg, Germany – and there’s still a seat on board for you! Discover tomorrow’s solutions, expand your network, and give your developments an extra boost.
Secure your ticket now!

(ID:50820124)

Subscribe to the newsletter now

Don't Miss out on Our Best Content

Business E-mail

Please enter a valid mailadress.

By clicking on „Subscribe to Newsletter“ I agree to the processing and use of my data according to the consent form (please expand for details) and accept the Terms of Use. For more information, please see our Privacy Policy.

Declaration of consent

It goes without saying that we treat your personal data responsibly. Where we collect personal data from you, we process the data in compliance with the relevant data protection regulations. More detailed information is available in our privacy policy.

Consent to the use of data for advertising purposes

I consent to the use of my email address to send editorial newsletters by Mesago Messe Frankfurt GmbH, Rotebühlstr. 83-85, 70178 Stuttgart, Germany including all of its affiliates within the meaning of Section 15 et seq. AktG (‘Mesago’). I have viewed lists of each group of affiliates here for the Mesago.
The content of the newsletter covers the products and services of all of the companies listed above including, for example, trade magazines and specialist books, events and exhibitions and event-related products and services, printed and digital media products and services such as additional (editorial) newsletters, competitions, lead campaigns, online and offline market research, technical web portals and e-learning courses. If my personal telephone number has also been collected, it may be used to send offers for the aforementioned products and services from the above companies, as well as for market research purposes.
If I wish to access protected content online on portals of Mesago including its affiliates within the meaning of Section 15 et seq. AktG, I must register with additional data in order to access that content. In return for this free access to editorial content, my data may be used in line with this declaration of consent for the purposes described herein.

Right to withdraw consent

I am aware that I can withdraw this consent at any time with future effect. My withdrawal of consent does not affect the lawfulness of processing performed based on my consent before its withdrawal. If I wish to withdraw my consent, I can send an email to Mesago at privacy@mesago.com. If I no longer wish to receive individual newsletters to which I have subscribed, I can also click on the unsubscribe link at the bottom of a newsletter. I can find more information on my right to withdraw, how to exercise this right and the consequences of my withdrawal in the Privacy policy Editorial newsletters section.