Invention Grant
- Patent Title: Programmably configured switchmode audio amplifier
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Application No.: US15369520Application Date: 2016-12-05
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Publication No.: US10749488B2Publication Date: 2020-08-18
- Inventor: Patrick H. Quilter , Manny Rodriguez , Laura Mercs , Dale Sandberg , Matthew Skogmo
- Applicant: QSC, LLC
- Applicant Address: US CA Costa Mesa
- Assignee: QSC, LLC
- Current Assignee: QSC, LLC
- Current Assignee Address: US CA Costa Mesa
- Agency: Perkins Coie LLP
- Main IPC: H03F3/38
- IPC: H03F3/38 ; H03F3/183 ; H03F3/187 ; H03F3/72 ; H03F3/12 ; H03F3/68 ; H03F1/02 ; H03F3/217 ; H04R3/12

Abstract:
A multi-channel switchmode audio amplifier is configured by a programmed processor such that each channel drives separate loads, is connected in parallel or is configured in a bridge-tied mode as well as combinations thereof. In one embodiment, amplifier channels that are connected in parallel have power amplifiers that are driven with signals from a single modulator. A feedback circuit and error amplifier from one channel controls the modulated signal that is applied to each parallely connected amplifier channel. Current feedback circuits for parallely connected amplifier channels are eliminated by tightly controlling the timing of switching in the power amplifier output stages.
Public/Granted literature
- US20170085236A1 PROGRAMMABLY CONFIGURED SWITCHMODE AUDIO AMPLIFIER Public/Granted day:2017-03-23
Information query
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