Medtronic, Inc.

Mark S Ricotta

Lejun Wang

Mark R Boone

Mohsen Askarinya

Andrew J Ries

Mark E Henschel

Randolph E Crutchfield

Chunho Kim

Scott B Sleeper

Lawrence C McClure

Erik J Herrmann

Songhua Shi

Yongqian Wang

The present disclosure provides methods and techniques associated with a planar transformer for an apparatus. The planar transformers include a substrate carrying electronic components and a continuous core that is formed by distributing the encapsulant material uniformly around the substrate unit to define a consistent cross-sectional area for the magnetic path. The electronic components include primary windings and secondary windings associated with the transformer. In some embodiments, the encapsulant material is molded to seals air gaps to the substrate unit.

Method of forming a transformer assembly

A multi-chip modular wafer level package of a high voltage unit for an implantable cardiac defibrillator includes one or more high voltage (HV) component chips encapsulated with other components thereof in a polymer mold compound of a single reconstituted wafer, wherein all interconnect segments are preferably located on a single side of the wafer. To electrically couple a contact surface of each HV chip, located on a side of the chip opposite the interconnect side of the wafer, the reconstituted wafer may include conductive through polymer vias; alternately, either wire bonds or layers of conductive polymer are formed to couple the aforementioned contact surface to the corresponding interconnect, prior to encapsulation of the HV chips. In some cases one or more of the components encapsulated in the reconstituted wafer of the package are reconstituted chips.

Wafer level packages of high voltage units for implantable medical devices

During a process to encapsulate electronic components and attachment interfaces thereof on a first side of a substrate of a hybrid assembly, a fluid is supplied to a trench of an encapsulation system in which the hybrid assembly is loaded, and a balancing pressure is delivered by the fluid within the trench, during the encapsulation process, to support the hybrid assembly from an opposing second side of the substrate. A regulator of a fluid supply of the system may maintain the balancing pressure, for example, being controlled by a controller of the system that is configured to estimate a pressure within a molding cavity of the system.

Systems for encapsulating a hybrid assembly of electronic components and associated methods

The present disclosure provides methods and techniques associated with a planar transformer for an apparatus. The planar transformers include a substrate carrying electronic components, an upper core bonded on a first exterior surface of the substrate, and a lower core bonded on a second exterior surface opposed to the first side of the substrate. The electronic components include primary windings and secondary windings associated with the transformer. In some embodiments, the transformer includes encapsulant material that is dispensed over and between the components of the transformer to seal air gaps.

Implantable medical device including a molded planar transformer

The present invention provides a packaging technique and apparatus that incorporates a flexible substrate package with a three-axis magnetic sensor for three-axis sensing in an implantable medical device. The apparatus includes three single-axis magnetic sensor integrated circuits (ICs) that are mounted to a substrate and encapsulated with a polymer mold compound. The substrate is excised around each of the sensor ICs to form panels that are folded to align the three single-axis sensors in the x, y and z axis.

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Tempe, AZ, United States of America

Mark S Ricotta