Our website uses cookies to provide you with the best possible service. More information about the use of cookies on this website and how they can be disabled is available on our information page. With your consent, you confirm that you have read the information about the use of cookies and accept it. Please also note our further information on the subject of data privacy policy.

TDK TDK Electronics · TDK Europe

Inductors

November 11, 2014

Compact high-current chokes for 48-V automotive power systems

[---Image_alt---] Teaser_LG_en

TDK Corporation presents the new BCEM series of EPCOS high-current chokes designed specifically for buck-boost converters in 48-V automotive power systems. These innovative SMD inductors have very compact dimensions of only 27.5 mm x 29.5 mm x 14.5 mm thanks to their ERU27 ferrite cores with flat windings. The new chokes feature inductance values of 3 µH to 11 µH and are designed for saturation currents of up to 50 A and operating temperatures of between -40 °C and +150 °C. The components are suited for switching frequencies from 100 kHz to 200 kHz, are RoHS-compatible and are qualified to AEC-Q200.

The new components are used as storage chokes in buck-boost converters of vehicles linking the 12-V and 48-V levels. Six or eight-phase interleaved converters are used in order to keep the ripple currents as low as possible and transfer high power levels. Since each of the converters needs a storage choke, the compact dimensions of the new high-current chokes along with their current capability are especially beneficial.

Main applications

  • Buck-boost converters for 48-V automotive power systems

Main features and benefits

  • High saturation currents of up to 50 A
  • Compact dimensions of 27.5 mm x 29.5 mm x14.5 mm
  • RoHS-compatible
  • Qualified to AEC-Q200