Method and system for transitioning between operation states in an output system
US7554390B1 · kind B1 · utility
5Cited by
8References
20Claims
0Family size
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Key dates
| Filing date | Dec 20, 2007 |
| Grant date | Jun 30, 2009 |
| Priority date | — |
| Expiry date | Jan 27, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/68
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A closed loop amplifier system comprising a modulator that provides a pulse-width modulated (PWM) output signal based on an input signal, the modulator having a variable closed loop transfer function. The system also comprises a ramp generator that provides a ramp signal to the modulator, the variable closed loop transfer function of the modulator varying as a function of the ramp signal. The system further comprises a controller that controls the ramp generator to provide the ramp signal to adjust the variable closed loop transfer function during transitions between operating states of the amplifier system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.