公开(公告)号：US20250036178A1

公开(公告)日：2025-01-30

申请号：US18361191

申请日：2023-07-28

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Daniel Alan Humphrey ,  Stewart Gavin Goodson, II ,  Mohamed Amin Bemat

IPC: G06F1/26

Abstract: A computing device comprises a primary printed circuit board (PCB), one or more computing components mounted to the primary PCB, a baseboard management controller (BMC) mounted to the primary PCB, a power subsystem, and a logic device coupled to the primary PCB. The power subsystem comprises a power controller with a first logic pin, and the logic device is communicably connected to the first logic pin. The logic device is configured to program the power controller by placing the power controller in a programming mode and inputting programming information into the power controller via the first logic pin.

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：US20210036623A1

公开(公告)日：2021-02-04

申请号：US16525951

申请日：2019-07-30

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Mohamed Amin Bemat ,  Ali Salem Ba-Thunya

IPC: H02M3/335 ,  G05B15/02 ,  G06F1/26

Abstract: A two-stage step-down converter includes a first stage and a second stage operatively connected to the first stage. The first stage is to step down an input voltage to an intermediate periodic signal and includes a primary side, a secondary side, and a plurality of transformers to electromagnetically couple the primary side and the secondary side to step down the input voltage to the intermediate periodic signal. The primary windings of the transformers are connected in series and the secondary windings are connected in parallel.

公开(公告)号：US10718819B2

公开(公告)日：2020-07-21

申请号：US15746882

申请日：2015-07-31

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Mohamed Amin Bemat ,  Daniel Humphrey ,  Michael Delany

IPC: G01R31/40

Abstract: Various examples provide systems and methods in which a capacitor is charged by an active first power factor correction module and a voltage across the capacitor is determined while the second power factor correction module is exclusively active. A health state of the second power factor correction module may be determined based on the determined voltage across the capacitor.

公开(公告)号：US10326302B2

公开(公告)日：2019-06-18

申请号：US14431694

申请日：2012-09-27

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Daniel Humphrey ,  Mohamed Amin Bemat

IPC: H02J9/00 ,  H02J1/10 ,  H02J4/00

Abstract: Examples disclose a power system comprising a first power supply to provide a first power to a load. Further, the power system comprises a second power supply to detect a droop in the first power to the load, the droop associated with a decrease in efficiency of the first power supply. Additionally, the second power supply is to balance the load based on the droop detection by providing a second power in addition to the first power to the load to increase the efficiency of the power system.

公开(公告)号：US09787136B2

公开(公告)日：2017-10-10

申请号：US14901247

申请日：2013-06-28

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Daniel Humphrey ,  Mohamed Amin Bemat ,  Samantha Jean Castillo

IPC: H02J7/00 ,  H02J9/00 ,  H02J9/06

CPC classification number: H02J9/061 ,  H02J9/00 ,  H02J9/002

Abstract: Examples disclose a system comprising a power supply, coupled to an output power and an auxiliary power. The system is further comprising a controller to interrupt the output power through a switch coupled to the output. The controller is to interrupt the output power based a determination the output power is below an output threshold. The controller is further to interrupt the auxiliary power coupled to the output. The controller is to interrupt the auxiliary power based on a determination the auxiliary power is below an auxiliary threshold. Additionally, the system discloses the switch is to disconnect the output power.

公开(公告)号：US11073540B2

公开(公告)日：2021-07-27

申请号：US15960708

申请日：2018-04-24

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Mohamed Amin Bemat ,  Thi Vu ,  Kirk Yates

IPC: G01R19/25 ,  G05F1/59 ,  G01R19/10 ,  G06F1/30 ,  G06F1/28

Abstract: In some examples, a controller may include a processing resource and a memory resource storing machine readable instructions executable to cause the processing resource to set an electrical power threshold, monitor an amount of electrical power distributed between a plurality of phases of a multi-phase converter operation. The controller may detect a load disparity between a particular phase of the plurality of phases, disable the particular phase, and redistribute the electrical power amongst the remaining phases of the multi-phase converter operation.

公开(公告)号：US20200185911A1

公开(公告)日：2020-06-11

申请号：US16212594

申请日：2018-12-06

Applicant: HEWLETT PACKARD ENTERPRISE DEVELOPMENT LP

Inventor： Mohamed Amin Bemat ,  Daniel Humphrey ,  Benjamin Wade Dumas

IPC: H02H9/02 ,  H03K17/082

Abstract: An electronic fuse (e-fuse) for controlling input current of a load includes a transistor switch and a transorb device that is coupled in parallel to the transistor switch between a source and a drain of the transistor switch. A circuit comprising the transistor switch and the transorb device in parallel comprises a first end and a second end. The first end of the circuit is coupled to a power bus. The second end of the circuit is coupled to a first node of the load. The e-fuse includes an RC circuit comprising a resistor coupled in series with a first capacitor. The RC circuit is coupled between the power bus at the first end of the circuit and a return. The return is coupled to a second node of the load. The e-fuse includes a second capacitor that is coupled between the return and the second end of the circuit.

公开(公告)号：US10250275B2

公开(公告)日：2019-04-02

申请号：US15567806

申请日：2015-07-02

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Chung-Ping Ku ,  Mohamed Amin Bemat

IPC: H03M1/12 ,  G01R19/25

Abstract: According to some examples, systems and methods are provided for voltage sampling using one or more analog-to-digital converters (ADCs) to sense divided portions of a sampled voltage (e.g., of an output signal), using the one or more analog-to-digital converters to provide a plurality of digital values representative of those divided portions, and combining the plurality of digital values to produce a total digital value representative of the sampled voltage. Such systems and methods can achieve a high resolution for the total digital value while permitting use of ADCs that have a resolution lower than would otherwise be required to achieve the high resolution.

公开(公告)号：US10020737B1

公开(公告)日：2018-07-10

申请号：US15383346

申请日：2016-12-19

Applicant: Hewlett Packard Enterprise Development LP

Inventor： Daniel Humphrey ,  Mohamed Amin Bemat

IPC: H02M3/158 ,  H02M3/07

Abstract: An example device in accordance with an aspect of the present disclosure includes a first converter to selectively convert a first input signal to a first output signal, and a second converter to selectively convert a second input signal to a second output signal. A controller is to control switches of the first and second converters based on the input signals and output signals, and based on operating the first and second converters exclusively with respect to each other such that a total of first and second duty cycles does not exceed one.