公开(公告)号：US20250093923A1

公开(公告)日：2025-03-20

申请号：US18470840

申请日：2023-09-20

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Jiguang Zheng ,  Yue Sun ,  Hongli Zhang

IPC: G06F1/26 ,  H02M1/44 ,  H02M7/06

Abstract: A power-over-Ethernet (PoE) powered device (PD) comprises a PoE interface to receive a connector of an ethernet cable to connect the PD to a PoE power sourcing equipment (PSE). The PD comprises a first power line connected to the PoE interface to receive PoE power from the PSE in a connected state of the PD to the PSE. The PD also comprises a rectifier comprising a first input connected to the first power line, a first output connected to a first terminal of a PD chip, and a first rectifying element connected between the first input and first output. The PD further comprises a first capacitor connected in parallel to the first rectifying element between the first input and the first output. AC noise appearing on the first power line is bypassed around the first rectifying element via the first capacitor.

公开(公告)号：US10509450B1

公开(公告)日：2019-12-17

申请号：US16424995

申请日：2019-05-29

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Yue Sun ,  Yinzhi Dong ,  Lin Li

IPC: G06F1/20 ,  G08B21/18 ,  H04W88/08

Abstract: A method for thermally protecting an access point (AP) device may include receiving an actual AP power consumption value, the actual AP power consumption value being one of a plurality of potential AP power consumption values, receiving a sensed internal AP temperature value, the sensed internal AP temperature value being one of a plurality of potential internal AP temperature values, accessing an ambient temperature look up table defining relationships between the plurality of potential AP power consumption values, the plurality of potential internal AP temperature values and a plurality of ambient temperature values, and retrieving one of the plurality of ambient temperature values associated with the actual AP power consumption value and the sensed internal AP temperature value from the ambient temperature look up table, the retrieved ambient temperature value being an estimated ambient temperature value of the AP device.