Amplifiers – With semiconductor amplifying device – Including signal feedback means
Reexamination Certificate
2011-02-01
2011-02-01
Nguyen, Khanh V (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including signal feedback means
C330S253000
Reexamination Certificate
active
07880545
ABSTRACT:
The present invention provides compensation for circuits. In one embodiment, a compensation circuit has a first terminal coupled to an output terminal of the circuit and a second terminal coupled to feed back the output voltage to an internal node. A damping circuit may also be coupled to the output terminal. The damping circuit adds a pole and a zero to the transfer function of the circuit. In one embodiment, the damping circuit modifies the effect of the output impedance of a load on the transfer function to increase the phase margin of the circuit such that the circuit remains stable over an increased range of output capacitor values.
REFERENCES:
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Castello Rinaldo
Ottini Daniele
Rezzi Francesco
Venca Alessandro
Marvell International Ltd.
Nguyen Khanh V
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