公开(公告)号：US11949522B2

公开(公告)日：2024-04-02

申请号：US17395075

申请日：2021-08-05

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Shiyu Tian ,  Kah Hoe Ng ,  Hong Yi Wee

IPC: H04L12/10 ,  H04L12/04 ,  H04L12/06

CPC classification number: H04L12/10 ,  H04L12/04 ,  H04L12/06

Abstract: One aspect provides a power sourcing equipment controller for providing power to a powered device using power-over-Ethernet (PoE). The power sourcing equipment includes a voltage-output logic block to output a sequence of voltage signals, the voltage signals comprising at least a detection signal and a classification signal; a current-measurement logic block to measure current provided responsive to the voltage signals; a backoff-time-determination logic block to determine a backoff time in response to the current-measurement logic block detecting the provided current exceeding a predetermined threshold, the backoff time being determined based on an amount of time needed for discharging an internal capacitor associated with the powered device; and a timing logic block to cause the voltage-output logic block to delay the output of a next sequence of voltage signals based on the determined backoff time, thereby facilitating powering up of a device compliant with a different PoE standard.

公开(公告)号：US20230038813A1

公开(公告)日：2023-02-09

申请号：US17395075

申请日：2021-08-05

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Shiyu Tian ,  Kah Hoe Ng ,  Hong Yi Wee

IPC: H04L12/10 ,  H04L12/04 ,  H04L12/06

Abstract: One aspect provides a power sourcing equipment controller for providing power to a powered device using power-over-Ethernet (PoE). The power sourcing equipment includes a voltage-output logic block to output a sequence of voltage signals, the voltage signals comprising at least a detection signal and a classification signal; a current-measurement logic block to measure current provided responsive to the voltage signals; a backoff-time-determination logic block to determine a backoff time in response to the current-measurement logic block detecting the provided current exceeding a predetermined threshold, the backoff time being determined based on an amount of time needed for discharging an internal capacitor associated with the powered device; and a timing logic block to cause the voltage-output logic block to delay the output of a next sequence of voltage signals based on the determined backoff time, thereby facilitating powering up of a device compliant with a different PoE standard.

公开(公告)号：US20220011841A1

公开(公告)日：2022-01-13

申请号：US16925928

申请日：2020-07-10

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Hong Yi Wee ,  Kah Hoe Ng ,  Shiyu Tian

IPC: G06F1/30 ,  G06F1/3296 ,  G06F1/28

Abstract: Systems and methods disclosed herein allow efficient reallocation of PoE when a PSU for a PSE fails. A PSE initially receives power from at least two PSUs and provides PoE to at least two PDs. When power from one of the PSUs becomes unavailable, the PSE refrains from providing PoE to a first PD, but continues providing PoE to a second PD. The PSE sends a communication to the second PD requesting that the second PD allow the PSE to allocate less power to the second. If the second PD confirms that allocating less power to the second PD is acceptable, the PSE reduces the amount of power allocated to the second PD and allocates at least some of the power saved by the reduction to the first PD.

公开(公告)号：US10693665B2

公开(公告)日：2020-06-23

申请号：US15306381

申请日：2014-04-24

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Su Yin Ho ,  Kah Hoe Ng ,  Kay Seah Ng

IPC: H04L12/00 ,  H02J13/00 ,  H04L12/10 ,  G05F1/66

Abstract: A method is provided to conserve power in a power sourcing equipment (PSE) that provides a PSE port voltage at PSE ports. The method includes, in response to detecting a powered device (PD) is connected to the PSE port, providing a power supply output voltage at a default value and turning on the PSE port. After turning on the PSE port, the method includes determining the PSE port voltage. When the PSE port voltage is greater than a threshold value, the method includes decreasing the power supply output voltage.

公开(公告)号：US12137545B2

公开(公告)日：2024-11-05

申请号：US17932765

申请日：2022-09-16

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： See Yun Yow ,  Kah Hoe Ng ,  Chien-Shuo Tang

IPC: H05K9/00 ,  H01L23/473 ,  H02M7/00 ,  H05K7/20

Abstract: Example implementations relate to an integrated circuit (IC) package, an electronic device having the IC package, and a method of assembling the IC package to a printed circuit board (PCB) of the electronic device. The IC package includes a substrate, a chip, and an electromagnetic shield. The chip is coupled to the substrate. The electromagnetic shield is coupled to the substrate such that the chip is enclosed between the substrate and the electromagnetic shield. The electromagnetic shield includes a ferromagnetic material. Further, the electromagnetic shield protrudes beyond the substrate and is electrically grounded to the PCB to prevent an electromagnetic interference (EMI) noise from radiating through the IC package.

公开(公告)号：US11797070B2

公开(公告)日：2023-10-24

申请号：US16925928

申请日：2020-07-10

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Hong Yi Wee ,  Kah Hoe Ng ,  Shiyu Tian

IPC: G06F1/3296 ,  G06F1/30 ,  G06F1/28

CPC classification number: G06F1/30 ,  G06F1/28 ,  G06F1/3296

Abstract: Systems and methods disclosed herein allow efficient reallocation of PoE when a PSU for a PSE fails. A PSE initially receives power from at least two PSUs and provides PoE to at least two PDs. When power from one of the PSUs becomes unavailable, the PSE refrains from providing PoE to a first PD, but continues providing PoE to a second PD. The PSE sends a communication to the second PD requesting that the second PD allow the PSE to allocate less power to the second. If the second PD confirms that allocating less power to the second PD is acceptable, the PSE reduces the amount of power allocated to the second PD and allocates at least some of the power saved by the reduction to the first PD.

公开(公告)号：US20170054567A1

公开(公告)日：2017-02-23

申请号：US15306381

申请日：2014-04-24

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Su Yin Ho ,  Kah Hoe Ng ,  Kay Seah Ng

IPC: H04L12/10 ,  H02J13/00

CPC classification number: H04L12/10 ,  G05F1/66 ,  H02J13/00

Abstract: A method is provided to conserve power in a power sourcing equipment (PSE) that provides a PSE port voltage at PSE ports. The method includes, in response to detecting a powered device (PD) is connected to the PSE port, providing a power supply output voltage at a default value and turning on the PSE port. After turning on the PSE port, the method includes determining the PSE port voltage. When the PSE port voltage is greater than a threshold value, the method includes decreasing the power supply output voltage.

Abstract translation: 提供了一种在PSE端口提供PSE端口电压的电源设备（PSE）中节省功率的方法。 该方法包括响应于检测到电源设备（PD）连接到PSE端口，将电源输出电压提供为默认值并打开PSE端口。 打开PSE端口后，该方法包括确定PSE端口电压。 当PSE端口电压大于阈值时，该方法包括降低电源输出电压。

公开(公告)号：US20240098952A1

公开(公告)日：2024-03-21

申请号：US17932765

申请日：2022-09-16

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： See Yun Yow ,  Kah Hoe Ng ,  Chien-Shuo Tang

IPC: H05K9/00 ,  H01L23/473 ,  H02M7/00 ,  H05K7/20

CPC classification number: H05K9/0088 ,  H01L23/473 ,  H02M7/003 ,  H05K7/20281

Abstract: Example implementations relate to an integrated circuit (IC) package, an electronic device having the IC package, and a method of assembling the IC package to a printed circuit board (PCB) of the electronic device. The IC package includes a substrate, a chip, and an electromagnetic shield. The chip is coupled to the substrate. The electromagnetic shield is coupled to the substrate such that the chip is enclosed between the substrate and the electromagnetic shield. The electromagnetic shield includes a ferromagnetic material. Further, the electromagnetic shield protrudes beyond the substrate and is electrically grounded to the PCB to prevent an electromagnetic interference (EMI) noise from radiating through the IC package.

公开(公告)号：US11747886B2

公开(公告)日：2023-09-05

申请号：US17591376

申请日：2022-02-02

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Hong Yi Wee ,  Kah Hoe Ng ,  Shiyu Tian

IPC: G06F1/32 ,  G06F1/3287 ,  G06F1/3296 ,  G06F1/3206

CPC classification number: G06F1/3287 ,  G06F1/3206 ,  G06F1/3296

Abstract: Example implementations relate to a power sourcing equipment (PSE), and a method of reallocating power to one or more powered devices (PDs) by the PSE, before a swap event of a power supply unit (PSU). The method includes receiving an information about the swap event, determining based on the information that the swap event is expected to cause powering down of the one or more PDs, and requesting a first PD among the one or more PDs to permit the PSE to reduce an initial value of power allocated to the first PD. Further, the method includes reducing an amount of power to the first PD from the initial value to a reduced value of power based on a response from the first PD, and reallocating the reduced value of the power to the first PD to avoid powering down of the one or more PDs during the swap event.

公开(公告)号：US20230244295A1

公开(公告)日：2023-08-03

申请号：US17591376

申请日：2022-02-02

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Hong Yi Wee ,  Kah Hoe Ng ,  Shiyu Tian

IPC: G06F1/3287 ,  G06F1/3206 ,  G06F1/3296

CPC classification number: G06F1/3287 ,  G06F1/3206 ,  G06F1/3296

Abstract: Example implementations relate to a power sourcing equipment (PSE), and a method of reallocating power to one or more powered devices (PDs) by the PSE, before a swap event of a power supply unit (PSU). The method includes receiving an information about the swap event, determining based on the information that the swap event is expected to cause powering down of the one or more PDs, and requesting a first PD among the one or more PDs to permit the PSE to reduce an initial value of power allocated to the first PD. Further, the method includes reducing an amount of power to the first PD from the initial value to a reduced value of power based on a response from the first PD, and reallocating the reduced value of the power to the first PD to avoid powering down of the one or more PDs during the swap event.