System and method for a high-side power switch
US9966943B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2016 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Apr 9, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0063
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A system and method for a high-side power switch includes a gate driver configured to be coupled to a power switch, a voltage measurement circuit configured to be coupled directly to the power switch, a switch monitoring circuit configured to be coupled to the power switch, the switch monitoring circuit configured to measure an output current of the power switch, a current limitation circuit coupled to the gate driver and the switch monitoring circuit, the current limitation circuit configured to regulate gate-source voltage of the gate driver when the output current exceeds a threshold value, and a controller coupled to the current limitation circuit and the voltage measurement circuit, the controller configured to determine a mode of operation according to a startup voltage measured by the voltage measurement circuit during a startup sequence, the controller further configured to provide the threshold value to the current limitation circuit according to the mode of operation and a switch voltage measured by the voltage measurement circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.