Current sense apparatus for battery charger systems
US10651665B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 2017 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Jan 9, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/16519
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current sense method comprises generating a voltage across a first current mirror of a current sense apparatus, the voltage being proportional to a current flowing through the current sense apparatus when the current is greater than a predetermined current value and applying a minimum drain-to-source voltage limiter to the first current mirror of the current sense apparatus when the current is less than the predetermined current value, wherein, as a result of applying the minimum drain-to-source voltage limiter to the first current mirror, the voltage across the first current mirror is clamped to a predetermined voltage value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.