Over voltage protection of a transistor device
US10110216B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2017 |
| Grant date | Oct 23, 2018 |
| Priority date | — |
| Expiry date | Jun 30, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0826
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An once a channel voltage exceeds a threshold, when the transistor is in an OFF state. This is over-voltage protection circuit for a transistor is presented. This circuit acts to switch on the transistor achieved with internal components which are integrated with the transistor, avoiding the need for external diodes or Zener structures. The circuit has a transistor with a control terminal, a first current carrying terminal and a second current carrying terminal. The over-voltage protection circuit has a level shifter arranged to feed back a level-shifted version of a channel voltage between said first and second current carrying terminals to the control terminal. The level shifter allows the switching threshold voltage of the transistor to be crossed when a predetermined value of the channel voltage is crossed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.