Qualcomm Incorporated

University of California

Sally Amin

Lin Xue

Patrick Mercier

Song Shi

Iulian Mirea

A DC-DC converter converts voltage from a battery source providing a voltage Vto a lower level. A four-level transistor stack selectively connects an input voltage and flying capacitor voltages to an output inductor. Stress reduction transistors limit the charging of the flying capacitors to V/3. The stress reduction transistors can also limit switching transistor voltages to V/3. Freewheel switches can be used to limit ringing in the output inductor.

Li-ion-compatible fully-integrated hybrid converter

An apparatus is disclosed for a single-inductor multiple-output (SIMO) power converter with a cross-regulation switch. An example apparatus includes a power source and a SIMO power converter. The SIMO power converter includes an input node coupled to the power source, a first node, a second node, a ground node, and an inductor coupled between the first node and the second node. The single-inductor multiple-output power converter also includes a first switch coupled between the input node and the first node, a second switch coupled between the first node and the ground node, and a cross-regulation switch coupled between the input node and the second node.

Growing community of inventors

La Jolla, CA, United States of America

Sally Amin