Over-current protection for a switch mode class D audio amplifier
US8749303B2 · kind B2 · utility
2Cited by
10References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 2010 |
| Grant date | Jun 10, 2014 |
| Priority date | — |
| Expiry date | Apr 7, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/523
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Circuits and methods for over-current protection of pulse-width modulation systems such as switch mode class D audio systems, DC-to-DC converters, or switch mode power supplies have been disclosed. Over-current protection has been achieved by introducing supply-scalable pulses to bring the modulation index of PWM pulses to a safe level. Additionally to the over-current protection a recovery circuit and method to be applied right after an over-current situation has been disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.