Referenced Items are not available for this document.
It is pointed out that the stability margin of an audio power amplifier is reduced by a pole in the loop-gain transfer function caused by shunt capacitance in the loudspeaker load. The problem is most severe in amplifiers with output stages that have a high output impedance before feedback. Because MOSFET devices can have an output impedance that is much higher than BJT (bipolar junction transistor) devices, amplifiers with MOSFET output stages are particularly susceptible to load-induced oscillations. A feedforward frequency compensation technique is described that bypasses the pole in the output stage caused by the load capacitance for improved stability of the amplifier
Published in:
Consumer Electronics, IEEE Transactions on
(Volume:34
,
Issue:
2
)
Date of Publication: May 1988
- Page(s):
- 334 - 338
- ISSN :
- 0098-3063
- INSPEC Accession Number:
- 3213085
- Digital Object Identifier :
- 10.1109/30.2950
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 06 August 2002
- Issue Date :
- May 1988
- Sponsored by :
- IEEE Consumer Electronics Society
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