Inductor devices – Coil or coil turn supports or spacers – Printed circuit-type coil
Reexamination Certificate
2008-01-16
2009-06-30
Nguyen, Tuyen T. (Department: 2832)
Inductor devices
Coil or coil turn supports or spacers
Printed circuit-type coil
Reexamination Certificate
active
07554430
ABSTRACT:
A vertical winding structure for planar integrated magnetics used in switched-mode power converters maintains close coupling between the different windings but reduces the eddy current losses, lowers the DC winding resistance and reduces the number of layers of the PCB. Vertical and horizontal windings can be used together without sacrificing these performance advantages and further minimizing the capacitive coupling between the outer-leg windings and the center-leg winding. This winding structure can be used in a wide range of magnetic structures including isolated and non-isolated CDRs, interleaved CDRs, and buck and boost converters.
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Middlebrook, R.D.,
Chandrasekaran Sriram
Mehrotra Vivek
Sun Jian
Flextronics International USA, Inc.
Nguyen Tuyen T.
Slater & Matsil L.L.P.
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