Predictive sample queueing for time-shared ADC in a multiphase PWM controller
US11002771B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Mar 18, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Jul 22, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/1225
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In one or more embodiments, an efficient scheme is provided for sampling inductor currents in a digital multiphase PWM controller used for high-bandwidth voltage regulation. Some embodiments use the data from the PWM modulator along with weighted states based on the PWM waveform and past conversions in order to prioritize which current sense input should be sampled for each conversion. In these and other embodiments, a single ADC is used to sample inductor currents from two or more phases in a multiphase PWM controller, thereby providing power and area savings, for example.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.