Switching amplifier
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United States of America Patent
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-
May 8, 2012
Grant Date -
Jul 29, 2010
app pub date -
Oct 18, 2006
filing date -
Oct 18, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A switching amplifier is disclosed and comprises: a power supply (Vcc); input circuits (Va, Vb); switch transistors (M1, M2) connected with each other in series; driving circuits (I1, I2) coupled with the switch transistors (M1, M2) respectively; a bootstrap circuit for supplying operation voltage to the driving circuit (I1). The switching amplifier also comprises: leakage circuits (M1a, M2a) or auxiliary switching circuits (M1′, M2′). With the switching amplifier of the invention, the fluctuation of the bootstrap potential can be suppressed and the signal distortion of the switching amplifier can be prevented.
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