Hybrid inductor current monitoring for power switch
US11906555B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 7, 2022 |
| Grant date | Feb 20, 2024 |
| Priority date | — |
| Expiry date | Oct 7, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R19/16538
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and systems for emulating high side current of a power switch including low and high side switches. The method includes generating, with a low side current sensor, a low side current signal for the low side switch when the power switch is in a low state. The method also includes generating, with a first transconductance amplifier, an emulated current signal based on an input voltage of the power switch. The method further includes generating, with a buffer, a fixed reference voltage by sampling the low side current signal when the power switch changes from the low state to a high state. The method also includes generating, with a capacitor, an emulated voltage based on the emulated current signal and the fixed reference voltage. The method further includes, generating, with a second transconductance amplifier, a high side current signal for the high side switch based on the emulated voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.