Patent · US Expired

32V H-bridge driver with CMOS circuits

US6977533B2 · kind B2 · utility

13Cited by

7References

13Claims

0Family size

Assignee

DIALOG SEMICONDUCTOR INC. · DE

Inventors

Jürgen Kernhof · Dresden, DE
Eric Marschalkowski · Munich, DE

Key dates

Filing date	Dec 13, 2004
Grant date	Dec 20, 2005
Priority date	—
Expiry date	Dec 13, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH03K17/6871
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A motor bridge driver interlace, implemented in an ASIC using cost-efficient CMOS technology, is designed to control four external MOS power transistors in a H-bridge configuration for DC-motor driving to achieve accurate and fast switching. Main components of the interface are a charge pump for generating the control voltage for the high-side N-channel MOS transistors, high-side (HSD) circuits, low-side (LSD) circuits and a complex digital interlace for supplying the control signals in a programmable timing scheme. A “strong” charge pump is used to realize a simple CMOS switch to steer the output to the high-side transistors of said H-bridge. The motor bridge is connected to the battery supply by an additional N-channel MOS transistor to implement a reverse supply protection.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.