Short circuit detection and protection for a gate driver circuit and methods of detecting the same using logic analysis
US11183835B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2019 |
| Grant date | Nov 23, 2021 |
| Priority date | — |
| Expiry date | Nov 16, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0072
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A gate driver circuit is provided that includes a high-side power transistor; a low-side power transistor coupled to the high-side power transistor, where an output voltage is generated at a load node coupled between the low-side power transistor and the high-side power transistor; a gate driver configured to receive a high-side control signal and a low-side control signal, drive the high-side power transistor based on the high-side control signal, and drive the low-side power transistor based on the low-side control signal; and a short circuit detection circuit configured to monitor for short circuit events at the high-side power transistor and at the low-side power transistor based on the high-side control signal, the low-side control signal, and the output voltage, and, generate a fault signal in response to detecting a short circuit event at either of the high-side power transistor or the low-side power transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.