Patent · US Active

Amplifier arrangement comprising a master amplifier and at least one slave amplifier

US9515620B2 · kind B2 · utility

0Cited by

7References

8Claims

0Family size

Assignee

Robert Bosch GmbH · DE

Inventors

Josef Plager · Bogen, DE
Patrick Engl · Rattiszell, DE
Thomas Stein · Oberkochen, DE

Key dates

Filing date	Jan 16, 2015
Grant date	Dec 6, 2016
Priority date	—
Expiry date	Jan 16, 2035

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2200/432
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

An amplifier arrangement for amplifying at least one first and one second audio input signal. In one embodiment, the arrangement includes a master amplifier designed as a class D amplifier. The first audio input signal is applied to the master audio input and a master audio output signal is applied to the master audio output. The arrangement also includes a master feedback loop; thus enabling the master amplifier to be designed as a self-oscillating class D amplifier having a master oscillation frequency, at least one slave amplifier, a slave feedback loop, wherein a slave audio output signal or signal portions thereof are fed back into a slave audio input, and a master-slave coupling loop, wherein the master audio output signal or signal portions thereof is coupled into the slave audio input, so that the slave amplifier has the master oscillation frequency as its oscillation frequency.

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