Load-switch gate-protection circuit
US11050417B2 · kind B2 · utility
0Cited by
3References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2018 |
| Grant date | Jun 29, 2021 |
| Priority date | — |
| Expiry date | Aug 3, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/24
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Gate-protection circuitry protects a transistor, such as a MOSFET, from large gate-to-source voltage differentials that can permanently damage the transistor's gate-oxide layer. A source-voltage detector selectively enables the gate-protection circuitry based on a source voltage of the transistor. The gate-protection circuit is implemented without any Zener diodes. The transistor may be a load switch that is selectively controlled to apply a supply voltage to a load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.