Abstract: An inductor includes a magnetic core lying in a core plane. The magnetic core includes a vertical laminated structure with respect to the core plane of alternating ferromagnetic vertical layers and insulator vertical layers. An easy axis of magnetization can be permanently or semi-permanently fixed in the ferromagnetic vertical layers along an axis orthogonal to the core plane. Methods of manufacturing same are also disclosed.

Abstract: An integrated passive device and assemblies containing the same are disclosed. The integrated passive device can include a thin-film magnetic inductor. Various configurations of electrically connecting an integrated passive device to a processor and/or an interposer such as a chip-scale package are also disclosed.

Abstract: An inductor is integrated into a multilevel wiring network of a semiconductor integrated circuit. The inductor includes a planar magnetic core and a conductive winding. The conductive winding turns around in generally spiral manner on the outside of the planar magnetic core. The conductive winding is piecewise constructed of wire segments and of VIAs. The wire segments pertain to at least two wiring planes and the VIAs are interconnecting the at least two wiring planes. Methods for such integration, and for fabricating laminated planar magnetic cores are also presented.

Abstract: A magnetic polymer for use in microelectronic fabrication includes a polymer matrix and a plurality of ferromagnetic particles disposed in the polymer matrix. The magnetic polymer can be part of an insulation layer in an inductor formed in one or more backend wiring layers of an integrated device. The magnetic polymer can also be in the form of a magnetic epoxy layer for mounting contacts of the integrated device to a package substrate.

Abstract: Inductive elements comprising anisotropic media and biasing coils for magnetically biasing thereof and methods of manufacture and operation for use in applications such as microelectronics. Application of an electrical current through the bias coils generates a magnetic field that biases the magnetic material such that a desirable orientation of anisotropy is achieved throughout the magnetic core and enables modulation of the inductive response of the device. Electrical conductors coupled to interconnects are magnetically coupled to magnetic core layers to produce self and/or mutual inductors.

Abstract: A DC-DC power converter includes a switched inductor power converter and a parallel linear voltage regulator. Two transistors are positioned in the switched inductor power converter to periodically set a bridge voltage thereby producing a square wave with a fixed frequency and variable duty cycle. An inductor and an output capacitor filter the bridge voltage so that only the average value of the bridge voltage is passed to the load. Parasitic impedance due to physical separation of the switched inductor power converter and the load is overcome by providing the parallel linear regulator with its own dedicated channel to the load.

Abstract: An inductor is integrated into a multilevel wiring network of a semiconductor integrated circuit. The inductor includes a planar magnetic core and a conductive winding. The conductive winding turns around in generally spiral manner on the outside of the planar magnetic core. The conductive winding is piecewise constructed of wire segments and of VIAs. The wire segments pertain to at least two wiring planes and the VIAs are interconnecting the at least two wiring planes. Methods for such integration, and for fabricating laminated planar magnetic cores are also presented.

Abstract: A coupled inductor topology for a thin-film magnetic core power inductor that enables efficient integrated power conversion. Coupled magnetic core inductors with interleaved windings inductors comprise magnetic films and partially or fully interleaved conductors. Methods described herein are suitable for integration into monolithic, chip stacking fabrication or other traditional semiconductor device fabrication techniques and equipment. Soft ferromagnetic materials exhibiting high permeability and low coercivity are deposited using thin-film techniques. A plurality of electrical conductors surround at least one ferromagnetic core giving rise to two or more windings. Windings are coupled to one another through magnetic core(s). Windings are used to control permeability, inductance and magnetic saturation, finding particular utility in high magnetic flux applications.

Abstract: The flexible exothermic medium of this invention is composed of an exothermic agent which generates heat in contact with air, and a water-absorptive polymer and/or a second polymer other than the water absorptive polymer. The mixture thereof is pressed at a pressure of 100-8000 kg/cm2 with alcohol, a cross-linking agent or a plasticizer. This results in producing flexible united mediums. The flexibility of the exothermic medium is also obtained by irradiating it with light or heating the mixture. The exothermic medium thus prepared is so flexible as to fit any curved part the body and has excellent exothermic characteristics compared with the prior art. The heating element using these exothermic mediums is fit for various uses such as thermotherapy, body warmers, cosmetics and the like.