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:
Sep. 01, 2020
Filed:
Aug. 29, 2019
Alpha and Omega Semiconductor (Cayman), Ltd., Grand Cayman, KY;
Zhiqiang Niu, Santa Clara, CA (US);
Kuang Ming Chang, Fremont, CA (US);
Lin Chen, San Jose, CA (US);
Ning Sun, San Jose, CA (US);
QiHong Huang, San Jose, CA (US);
Tzu-Hsin Lu, San Jose, CA (US);
ALPHA AND OMEGA SEMICONDUCTOR (CAYMAN), LTD., Grand Cayman, KY;
Abstract
A high voltage (HV) converter implemented on a printed circuit board (PCB) includes a double diffused metal oxide semiconductor (DMOS) package comprising a lead frame and a main DMOS chip. The lead frame includes a gate section electrically connected to a gate electrode of the main DMOS chip, a source section electrically connected to a source electrode of the main DMOS chip and a drain section electrically connected to a drain electrode of the main DMOS chip. The PCB layout includes a large area source copper pad attached to and overlapping the source section of the DMOS package to facilitate cooling and a small area drain copper pad attached to and overlapping the drain section of the DMOS package to reduce electromagnetic interference (EMI) noise.