Switching/Linear Hybrid Audio Power Amplifiers for Domestic Applications, Part 2: The Class-B+D Amplifier
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H. Dymond, and P. Mellor, "Switching/Linear Hybrid Audio Power Amplifiers for Domestic Applications, Part 2: The Class-B+D Amplifier," Paper 8685, (2012 October.). doi:
H. Dymond, and P. Mellor, "Switching/Linear Hybrid Audio Power Amplifiers for Domestic Applications, Part 2: The Class-B+D Amplifier," Paper 8685, (2012 October.). doi:
Abstract: The analysis and design of a series switching/linear hybrid audio power amplifier rated at 100 W into 8 O are presented. A high-fidelity linear stage controls the output, while the floating mid-point of the power supply for this linear stage is driven by a switching stage. This keeps the voltage across the linear stage output transistors low, enhancing efficiency. Analysis shows that the frequency responses of the linear and switching stages must be tightly matched to avoid saturation of the linear stage output transistors. The switching stage employs separate DC and AC feedback loops in order to minimize the adverse effects of the floating-supply reservoir capacitors, through which the switching stage output current must flow.
@article{dymond2012switching/linear,
author={dymond, harry and mellor, phil},
journal={journal of the audio engineering society},
title={switching/linear hybrid audio power amplifiers for domestic applications, part 2: the class-b+d amplifier},
year={2012},
volume={},
number={},
pages={},
doi={},
month={october},}
@article{dymond2012switching/linear,
author={dymond, harry and mellor, phil},
journal={journal of the audio engineering society},
title={switching/linear hybrid audio power amplifiers for domestic applications, part 2: the class-b+d amplifier},
year={2012},
volume={},
number={},
pages={},
doi={},
month={october},
abstract={the analysis and design of a series switching/linear hybrid audio power amplifier rated at 100 w into 8 o are presented. a high-fidelity linear stage controls the output, while the floating mid-point of the power supply for this linear stage is driven by a switching stage. this keeps the voltage across the linear stage output transistors low, enhancing efficiency. analysis shows that the frequency responses of the linear and switching stages must be tightly matched to avoid saturation of the linear stage output transistors. the switching stage employs separate dc and ac feedback loops in order to minimize the adverse effects of the floating-supply reservoir capacitors, through which the switching stage output current must flow.},}
TY - paper
TI - Switching/Linear Hybrid Audio Power Amplifiers for Domestic Applications, Part 2: The Class-B+D Amplifier
SP -
EP -
AU - Dymond, Harry
AU - Mellor, Phil
PY - 2012
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2012
TY - paper
TI - Switching/Linear Hybrid Audio Power Amplifiers for Domestic Applications, Part 2: The Class-B+D Amplifier
SP -
EP -
AU - Dymond, Harry
AU - Mellor, Phil
PY - 2012
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - October 2012
AB - The analysis and design of a series switching/linear hybrid audio power amplifier rated at 100 W into 8 O are presented. A high-fidelity linear stage controls the output, while the floating mid-point of the power supply for this linear stage is driven by a switching stage. This keeps the voltage across the linear stage output transistors low, enhancing efficiency. Analysis shows that the frequency responses of the linear and switching stages must be tightly matched to avoid saturation of the linear stage output transistors. The switching stage employs separate DC and AC feedback loops in order to minimize the adverse effects of the floating-supply reservoir capacitors, through which the switching stage output current must flow.
The analysis and design of a series switching/linear hybrid audio power amplifier rated at 100 W into 8 O are presented. A high-fidelity linear stage controls the output, while the floating mid-point of the power supply for this linear stage is driven by a switching stage. This keeps the voltage across the linear stage output transistors low, enhancing efficiency. Analysis shows that the frequency responses of the linear and switching stages must be tightly matched to avoid saturation of the linear stage output transistors. The switching stage employs separate DC and AC feedback loops in order to minimize the adverse effects of the floating-supply reservoir capacitors, through which the switching stage output current must flow.
Authors:
Dymond, Harry; Mellor, Phil
Affiliation:
University of Bristol, Bristol, UK
AES Convention:
133 (October 2012)
Paper Number:
8685
Publication Date:
October 25, 2012Import into BibTeX
Subject:
Amplifiers and Equipment
Permalink:
http://www.aes.org/e-lib/browse.cfm?elib=16428