Power supply protection device and method thereof
US10222406B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 2016 |
| Grant date | Mar 5, 2019 |
| Priority date | — |
| Expiry date | Jun 1, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M3/158
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power supply protection device including a driving circuit, a logic control unit and a protection module is provided. The driving circuit adjusts an external voltage according to a first driving signal and a second driving signal and outputs a driving voltage. The logic control unit generates the first driving signal and the second driving signal according to a protection signal and a pulse signal. The protection module outputs a plurality of test currents orderly to detect a plurality of impedances of the driving circuit before the driving circuit receives the external voltage, generates a plurality of voltage signals according to the impedances and compares the voltage signals with a plurality of reference voltages to generate the protection signal. A power supply protecting method for protecting a driving circuit is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.