Control circuit and method for a switching amplifier
US7545207B2 · kind B2 · utility
6Cited by
5References
9Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 17, 2008 |
| Grant date | Jun 9, 2009 |
| Priority date | — |
| Expiry date | Jun 1, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/6871
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
In a control circuit and method for a high efficiency and low EMI switching amplifier, an input signal is compared with a reference signal to generate a comparison signal, and a control signal is generated in response to the comparison signal for a driver to generate an output signal. The output signal is fed back to control the slope of the reference signal in association with an initial level set for the reference signal to provide a minimum on-time period for the output signal. Alternatively, a reference value is provided to compare with the reference signal for setting a minimum on-time period for the output signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.