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:
Dec. 03, 2002
Filed:
Aug. 14, 2001
Stephen Nicholas Siu, Los Angeles, CA (US);
International Rectifier Corporation, El Segundo, CA (US);
Abstract
A power module having a power circuit board free of mounting holes and more usable surface area for disposition of copper traces is shown. The power module includes a power shell that snaps onto the underside of the power circuit board. The power shell has embedded therein a thermally conductive substrate. One or a plurality of power semiconductor devices are disposed over one side of the thermally conductive substrate. A heatsink is mounted to the underside of the power shell in thermal contact with the thermally conductive substrate. The heatsink is mounted to the underside of the power shell by a heatsink retainer which biases the heatsink against the substrate. The heatsink retainer is mounted on retainer posts which extend from the underside of the power shell.