Driver and slew-rate-control circuit providing soft start after recovery from short
US10763664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2018 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Sep 17, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0063
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A slew-rate-control (SLC) circuit is coupled to an input for a driver circuit to provide a first binary value when the circuit is powered on and to control a slew rate when a pass element controlled by the driver circuit is enabled. The SLC circuit includes a capacitor node for coupling to a first terminal of an external capacitor, the capacitor node being coupled to the input. The SLC circuit also includes a SLC element coupled between the input and a first source of voltage to define the slew rate and a reset FET coupled between the input and a second source of voltage. The reset FET's gate is controlled by an over-current-protection signal that changes binary value when a short is detected. The reset FET is coupled to return the input to the first binary value responsive to detection of a short
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.