The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 12, 2013
Filed:
Jun. 30, 2009
Freddy Roozeboom, Waalre, NL;
Derk Reefman, Best, NL;
Johan Hendrik Klootwijk, Eindhoven, NL;
Lukas Frederik Tiemeijer, Eindhoven, NL;
Jaap Ruigrok, Asten, NL;
Freddy Roozeboom, Waalre, NL;
Derk Reefman, Best, NL;
Johan Hendrik Klootwijk, Eindhoven, NL;
Lukas Frederik Tiemeijer, Eindhoven, NL;
Jaap Ruigrok, Asten, NL;
NXP B.V., Eindhoven, NL;
Abstract
The present invention provides a means to integrate planar coils on silicon, while providing a high inductance. This high inductance is achieved through a special back- and front sided shielding of a material. In many applications, high-value inductors are a necessity. In particular, this holds for applications in power management. In these applications, the inductors are at least 5 of the order of 1 μH, and must have an equivalent series resistance of less than 0.1Ω. For this reason, those inductors are always bulky components, of a typical size of 2×2×1 mm 3, which make a fully integrated solution impossible. On the other hand, integrated inductors, which can monolithically be integrated, do exist. However, these inductors suffer either from low inductance values, or 10 very-high DC resistance values.