Hot swapping protection device for power over ethernet and method thereof
US11121545B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2020 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Sep 30, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hot swapping protection device for Power over Ethernet which has a state setting switch group, an interface circuit, a power supply device, a packet switching controller, multiple isolation coil sets, and multiple connectors. The packet switching controller receives a digital state value P2 of the interface circuit and a digital signal P1 of the state setting switch group and bitwise compares P1 and P2 so as to output a command to control the DC voltage outputs of the power supply device. The power supply device has a digital power controller and an analog power controller having multiple voltage output terminals for providing DC voltages to the multiple connectors. Before removing a cable connected to a connector, all voltage output states of the voltage output terminals corresponding to the connector are set to a cutoff state, so that sparks generation can be avoided during subsequent cable plug-in and unplugging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.