Smart electronic switch
US11405032B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 8, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Aug 25, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0027
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An integrated circuit that may be employed as a smart switch is described herein. In accordance with one embodiment the integrated circuit includes a power transistor coupled between a supply pin and an output pin and a current sensing circuit coupled to the power transistor and configured to generate a current sense signal indicative of a load current passing through the power transistor. The integrated circuit further comprises a monitor circuit configured to receive the current sense signal and to provide a protection signal based on the current sense signal and a threshold value, wherein the monitor circuit includes a filter that is configured to receive a filter input signal that depends on the current sense signal. The filter has a transfer characteristic with two or more time constants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.