Patent ID: 7365407

Claim:
A packaged circuit comprising: a leadframe having a first section and a second section, said first section comprising a lateral portion, a chip mounting area and a first extension; an integrated circuit chip mounted in said chip mounting area and in thermal contact with said chip mounting area; an encapsulating layer having a top surface, a bottom surface, a first side surface, a second side surface, and an interior region positioned between said top surface and said bottom surface, wherein, said first extension is bent so that it at least partially passes through said interior region toward said bottom surface in order to provide a first heat path from said chip mounting area to said bottom surface, said hear path connecting said hear chip mounting area to said bottom surface without passing through said first side surface and said second side surface, wherein said lateral portion extends from said chip mounting area through said first side surface and a portion of said second section extends through said second side surface, and wherein said first heat path has less thermal resistance than a heat path through either said lateral portion or said second section.