Accurate load current sensing apparatus and method
US11728731B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Dec 2, 2020 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Jul 7, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/66
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A Ton/2 generator retrofits a digital tracking algorithm to an analog Constant-On-Time (COT) Controller to enable fast sensing. The Ton/2 generation is cognizant of the delay between high-side switch (HSFET) on generation and the actual turn-on time of the HSFET so that there is no deviation of sampling point, and current is reported with high accuracy. The digital tracking algorithm automatically takes higher steps during load transients to enable faster tracking and scales the measured current (Ipeak/2) based on a discontinuous conduction mode (DCM) period for DCM current reporting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.