Invention Grant
US07880545B1 Cascode compensation circuit and method for amplifier stability 有权
串级补偿电路和放大器稳定性方法

Cascode compensation circuit and method for amplifier stability
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.
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