PAPER SESSION 2: POWER STAGE TOPOLOGIES
AND IMPLEMENTATION
Output Filter Solutions for Class D Power
Amplifiers: Analysis, Characterization,
and Recent Developments
Carlos Ferreira(1,3,4),
Beatriz Borges(2,4), Lu�s De S�(3,4).
(1) Instituto Polit�cnico de Tomar, Portugal.
(2) Universidade T�cnica de Lisboa, Portugal.
(3) Universidade de Coimbra, Portugal.
(4) Instituto de Telecomunica��es (IT), Portugal.
This paper focus class D amplifiers output filter topology�s
and characterizes the tradeoffs in its design: output
ripple, negative feedback loop gain, bandwidth,
attenuation of differential/common components, and
minimization of the system gain variation in face of
load impedance changes. Recent developments in filter
topologies are also discussed.
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