Over voltage protection circuit and electronic system for handling hot plug
US9407087B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2014 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Dec 25, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/004
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An over voltage protection circuit comprises an input end, coupled to an input power, for receiving an input voltage provided by the input power; and a driving module, coupled between the input end and a ground end, for generating a discharging current when the input voltage is larger than a predefined voltage, to reduce the input voltage to the predefined voltage. The driving module comprises a voltage regulating module, a p-channel metal-oxide-semiconductor field-effect transistor (PMOS), and an n-channel metal-oxide-semiconductor field-effect transistor (NMOS). The PMOS and the NMOS are an upper gate switch and a lower gate switch of a motor driver or a fan driver.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.