Patent · US Active

Gate-driver circuit with improved common-mode transient immunity

US9923500B1 · kind B1 · utility

2Cited by

5References

16Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Detlef Ummelmann · Munich, DE
Ansgar Pottbaecker · Grafing, DE

Key dates

Filing date	Sep 13, 2016
Grant date	Mar 20, 2018
Priority date	—
Expiry date	Sep 13, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH02P27/08
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Techniques are described for providing, in a gate driver circuit, a compensation current to compensate for parasitic displacement current induced during the rising edge of an output voltage at an output gate of the gate driver circuit. In one example, the techniques of the disclosure include activating, by a bridge driver circuit for a direct-current (DC) motor, a driver of the bridge driver circuit and measuring, by the bridge driver circuit, a parasitic current of the driver during a rise time of an output gate voltage of the driver. In response to the measured parasitic current, generating, by the bridge driver circuit, a compensation current; and outputting, by the bridge driver circuit and to the output gate of the of the driver, the compensation current.

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