Power inductors cut DC-DC converter size
Murata announces availability of power inductors. Intended for use in DC/DC converters and power management circuitry, these components signify major enhancements in operational performance parameters when compared to the company’s earlier generation of inductors.
The DFE21CCN_EL series of inductors provide a 20 percent increase in saturation current (ISAT) and a 50 percent reduction in DC resistance (RDC) over their predecessors.
The DFE21CCNR24MEL has a 0.24 µH inductance value, with an RDC of 20mOhm (Max) and an ISAT of 6.5A (Max). For the DFE21CCNR47MEL, the key values are 0.47 µH for inductance, 29mOhm (Max) for RDC and 4.8 A (Max) for ISAT. The 1.0 µH-rated DFE21CCN1R0MEL and 2.2 µH-rated DFE21CCN2R2MEL have respective typical RDC figures of 60mOhm and 138mOhm, with ISAT figures of 3.3A and 2.1A. Murata’s DFE21CCN_EL series components are supplied in 0805 inch size format. Additional sizes will be introduced in the future, in order to expand the breadth of applications that this series can attend to.
“Under normal circumstances, if you look to improve the ISAT value of a power inductor then its RDC will suffer accordingly. Vice-versa, an inferior ISAT will impact on the RDC for the power inductor,” explains Tomohiro Yao, EMI Division, General Manager of Marketing & Promotion Department, at Murata. “Thanks to the technological advances we have been able to implement, from both process and structural perspectives, we have succeeded in improving ISAT and RDC simultaneously, with no necessary trade-offs.”
https://www.murata.com/search/productsearch?cate=cgInductors&partno=DFE21C
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