Power Electronics / Power Management


Current sense transformers

11 November 2009 Power Electronics / Power Management

Epcos has extended its product range with four current sense transformers. The new series was developed on the basis of an EE12.6 ferrite core and is suitable for measuring alternating currents of up to 40 A. It complements the portfolio of transformers with E4.2 and EE5 ferrite cores.

Thanks to their SMT design, the new current sense transformers are particularly suited for compact DC-DC converters. The primary winding of the complete solution consists of an external yoke. The DC resistance of the primary winding is 0,28 m for all types, with a rated current of 40 A. The new transformers are available with inductances of between 1,4 and 22,4 μH and secondary-side DC resistances of between 400 and 2500 m. Their turns ratios are between 1:50 and 1:200 and they have a test voltage of 1500 V a.c. All new current sense transformers are compatible with existing designs based on EE12.6 cores.



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