Method for sensing inductor current across range exceeding ADC dynamic range and PWM controller system including ADC therefor
US11067611B2 · kind B2 · utility
0Cited by
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20Claims
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Key dates
| Filing date | Mar 18, 2019 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Jul 29, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/0009
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to certain aspects, a predictive tracking scheme is provided for sampling inductor currents in a digital PWM controller used for high-bandwidth voltage regulation. In one or more embodiments, the predicted current derived from the PWM waveform is fed forward to the current sense ADC in order to reduce the required conversion range. These and other embodiments only need to convert a few of the LSB of the ADC in order to correct the largest error expected in the synthesizer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.