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TDK Expands SMD Flat Wire Coupled Inductors for Power Applications

17.10.2023
Reading Time: 2 mins read
A A

TDK Corporation has expanded its family of flat wire power inductors with the high-performance EPCOS ERUC23 coupled inductor series (B82559S*).

In such components, two windings share a single magnetic core. The new series comprises six types covering a coupled inductance range from 1.4 µH to 4.1 µH and saturation currents from 50 A to 97 A.

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The AEC-Q200-qualified and RoHS-compliant components, which can be picked and placed automatically, have dimensions of just 26.8 x 13.8 mm2, with heights varying between 13.7 mm and 14.0 mm depending on the type. They are specified for a wide temperature range from -40 °C to +150°C, and depending on the type, the DC resistance of a single winding is 0.82 mΩ to 1.85 mΩ.

Coupled inductors are very versatile: They are suitable for dual-phase buck and boost converters as well as for buck/boost converters – particularly also for hybrid voltage converters that convert 48 V to 12 V. Since the two windings are coupled, the ripple current is reduced which improves efficiency. Using coupled inductors instead of two individual chokes saves significant space on the circuit board.

Features

  • High saturation currents
  • Low DC resistance
  • Automatic pick and place, surface mounting
  • Reduced ripple with improved efficiency in a compact package

Applications

  • Dual-phase buck and boost converters as well as buck/boost converters
  • Hybrid converter for 48 V to 12 V (flying capacitor converters)

Related

Source: TDK

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