Cascode compensation circuit and method for amplifier stability
US7880545B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 3, 2009 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Mar 26, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/297
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.