公开(公告)号：US11165242B2

公开(公告)日：2021-11-02

申请号：US16063363

申请日：2015-12-18

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Daniel Humphrey ,  Howard Leverenz ,  Michael Delany ,  Mohamed Amin Bemat

IPC: H02H9/00 ,  G06F1/26 ,  H03K17/16 ,  H03K17/22 ,  H03K17/082 ,  G01R27/26

Abstract: Example implementations relate to a variable soft start device. For example, in an implementation, the variable soft start device may set the capacitance of a variable capacitance circuit connected to a soft start pin of the electronic fuse. The variable soft start device may read a power-good signal from the electronic fuse and determine the capacitance to set according to the power-good signal.

公开(公告)号：US20190237959A1

公开(公告)日：2019-08-01

申请号：US15880845

申请日：2018-01-26

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Bradley D. Winick ,  Christopher C. Wanner ,  Howard Leverenz

IPC: H02H1/00 ,  H02H3/08 ,  H02H11/00 ,  G01R31/07

CPC classification number: H02H1/0007 ,  G01R31/07 ,  H02H3/08 ,  H02H11/005

Abstract: Examples herein relate to an apparatus. In some examples, an apparatus may include a circuit to direct a power signal to at least one electrical component. The circuit may include a protection device to regulate power to the electrical component, detection circuitry to detect when the protection device has failed, and an alert handling logic to receive a signal from the detection circuitry that the protection device has failed.

公开(公告)号：US11190002B2

公开(公告)日：2021-11-30

申请号：US15880845

申请日：2018-01-26

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Bradley D. Winick ,  Christopher C. Wanner ,  Howard Leverenz

IPC: H02H3/00 ,  H02H1/00 ,  H02H11/00 ,  H02H3/08 ,  G01R31/74

Abstract: Examples herein relate to an apparatus. In some examples, an apparatus may include a circuit to direct a power signal to at least one electrical component. The circuit may include a protection device to regulate power to the electrical component, detection circuitry to detect when the protection device has failed, and an alert handling logic to receive a signal from the detection circuitry that the protection device has failed.

公开(公告)号：US11132322B2

公开(公告)日：2021-09-28

申请号：US15922148

申请日：2018-03-15

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Michael Delany ,  Howard Leverenz ,  Dylan A Quiroz

IPC: H02H9/00 ,  G06F13/40 ,  G05F1/573 ,  H02H9/02

Abstract: A controller, comprising: a processing resource; and a memory resource storing machine-readable instructions to cause the processing resource to: activate a detection signal to enable a transistor coupled to the controller; determine a voltage associated with a plurality of hot swap controllers; and determine, in view of the voltage, a quantity of hot swap controllers included in the plurality of hot swap controllers.

公开(公告)号：US20190286601A1

公开(公告)日：2019-09-19

申请号：US15922148

申请日：2018-03-15

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Michael Delany ,  Howard Leverenz ,  Dylan A. Quiroz

IPC: G06F13/40 ,  H02H9/00 ,  H02H9/02 ,  G05F1/573

Abstract: A controller, comprising: a processing resource; and a memory resource storing machine-readable instructions to cause the processing resource to: activate a detection signal to enable a transistor coupled to the controller; determine a voltage associated with a plurality of hot swap controllers; and determine, in view of the voltage, a quantity of hot swap controllers included in the plurality of hot swap controllers.

公开(公告)号：US20190006839A1

公开(公告)日：2019-01-03

申请号：US16063363

申请日：2015-12-18

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Daniel Humphrey ,  Howard Leverenz ,  Michael Delany ,  Mohamed Amin Bemat

IPC: H02H9/00 ,  G01R27/26 ,  G06F1/26 ,  H03K17/16 ,  H03K17/22

Abstract: Example implementations relate to a variable soft start device. For example, in an implementation, the variable soft start device may set the capacitance of a variable capacitance circuit connected to a soft start pin of the electronic fuse. The variable soft start device may read a power-good signal from the electronic fuse and determine the capacitance to set according to the power-good signal.

公开(公告)号：US10516260B2

公开(公告)日：2019-12-24

申请号：US15446458

申请日：2017-03-01

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Mohamed Amin Bemat ,  Howard Leverenz ,  Daniel Humphrey

IPC: H02H3/44 ,  G01R31/02 ,  G01R19/12 ,  H02H3/04 ,  G01R19/165

Abstract: Examples disclosed herein relate to multi-node system fault management. In some of the examples disclosed herein, a fault detection circuit may distinguish between normal operating conditions of a multi-node system and faults that occur between the overcurrent protection of the system's power supplies and the hot plug protection of the system's nodes. The fault detection circuit may detect these faults by monitoring a voltage at the node's backplane connector prior to the input of the node's hot plug protection interface. If the magnitude of the monitored voltage drops below a threshold voltage at a rate that exceeds a threshold rate, the fault detection circuit may determine that a fault has occurred and may communicate the fault to the power supplies. The power supplies may receive the fault communication and shut off their power outputs to prevent the fault from causing damage to the components in the system.