Sensing circuit, corresponding amplifier, apparatus and method
US10566940B2 · kind B2 · utility
1Cited by
5References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 2019 |
| Grant date | Feb 18, 2020 |
| Priority date | — |
| Expiry date | Aug 13, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/483
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A switching amplifier, such as a Class D amplifier, includes a current sensing circuit. The current sensing circuit is formed by replica loop circuits that are selectively coupled to corresponding output inverter stages of the switching amplifier. The replica loop circuits operated to produce respective replica currents of the output currents generated by the output inverter stages. A sensing circuitry is coupled to receive the replica currents from the replica loop circuits and operates to produce an output sensing signal as a function of the respective replica currents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.