Alpha and Omega Semiconductor (Cayman) Ltd.

Tzu-Hsin Lu

Zhiqiang Niu

Lin Chen

Kuang Ming Chang

Qihong Huang

Ning Sun

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.

Growing community of inventors

San Jose, CA, United States of America

Tzu-Hsin Lu