公开(公告)号：US11894936B2

公开(公告)日：2024-02-06

申请号：US17848881

申请日：2022-06-24

Applicant: Cisco Technology, Inc.

Inventor： Joel Richard Goergen ,  Chad M. Jones ,  Jessica Kiefer ,  Douglas Paul Arduini

IPC: H04L12/10 ,  H04L12/28 ,  G06F1/20 ,  G06F1/26

CPC classification number: H04L12/10 ,  G06F1/20 ,  G06F1/266 ,  H04L12/2885

Abstract: In one embodiment, an apparatus includes a power adapter configured for direct connection to a Power Supply Unit (PSU) installed in a network device, the power adapter comprising a power input port for receiving power on an Ethernet cable, a power converter module for converting the power received at the power input port to a PSU input power, and a power output connector for connection with a PSU power input connector.

公开(公告)号：US20230354548A1

公开(公告)日：2023-11-02

申请号：US18301655

申请日：2023-04-17

Applicant: Cisco Technology, Inc.

Inventor： Douglas Paul Arduini

IPC: H05K7/20

CPC classification number: H05K7/20154 ,  H05K7/20209 ,  H05K7/20409 ,  H05K7/20327

Abstract: Presented herein are techniques to improve air cooling for higher power and power density power supply examples, including using latent heat of vaporization as a single-phase liquid-cooling-to-air closed-loop system. These techniques may not be limited to power supplies, but may be applicable to other air cooling requirements in assemblies and systems.

公开(公告)号：US11456883B2

公开(公告)日：2022-09-27

申请号：US16380954

申请日：2019-04-10

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Richard Anthony O'Brien ,  Douglas Paul Arduini ,  Sung Kee Baek ,  Ruqi Li ,  Joel Richard Goergen

IPC: G01R31/50 ,  H04L12/10 ,  G01R31/08 ,  H04L41/0677

Abstract: In one embodiment, an apparatus comprises an input power interface for receiving input power, a power control system for transmitting DC (Direct Current) pulse power on multiple phases over a cable to a plurality of powered devices and verifying cable operation during an off-time of pulses in the DC pulse power, and a cable interface for delivery of the DC pulse power on the multiple phases and data over the cable to the powered devices. A method for transmitting multiple phase pulse power is also disclosed herein.

公开(公告)号：US11239689B2

公开(公告)日：2022-02-01

申请号：US17109007

申请日：2020-12-01

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Douglas Paul Arduini ,  Sung Kee Baek ,  Jonathan Lee Smith ,  Joel Richard Goergen

IPC: H02J9/00 ,  H02J4/00

Abstract: In one embodiment, an apparatus includes a power supply operable to output power to a load along with at least one other power supply, a sensing component for identifying a load level, and a control component for switching the power supply from a full power mode to a power saving mode based on the identified load level. The power supply shares current with the other power supply at a lower current and generally the same voltage as the other power supply while in the power saving mode.

公开(公告)号：US11063630B2

公开(公告)日：2021-07-13

申请号：US16671508

申请日：2019-11-01

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Douglas Paul Arduini ,  Sung Kee Baek ,  Richard Anthony O'Brien ,  Joel Richard Goergen ,  Chad M. Jones ,  Jason DeWayne Potterf ,  Ruqi Li

IPC: H04B3/54 ,  H04L12/10 ,  H02J13/00 ,  G01R31/08 ,  G05B9/02 ,  G01R31/50 ,  G06F1/30

Abstract: In one embodiment, a method includes transmitting from power sourcing equipment, low voltage pulse power to a powered device in a communications network, performing a safety test, enabling high voltage pulse power operation at the power sourcing equipment upon passing the safety test, and transmitting high voltage pulse power from the power sourcing equipment to the powered device. The powered device synchronizes with a waveform of the low voltage pulse power.

公开(公告)号：US20210167813A1

公开(公告)日：2021-06-03

申请号：US17171723

申请日：2021-02-09

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Douglas Paul Arduini ,  Sung Kee Baek ,  Richard Anthony O'Brien ,  Joel Richard Goergen ,  Chad M. Jones ,  Jason DeWayne Potterf ,  Ruqi Li

IPC: H04B3/54 ,  G01R31/08 ,  H04L12/10 ,  G05B9/02 ,  H02J13/00 ,  G06F1/30 ,  G01R31/50

Abstract: In one embodiment, a method includes receiving low voltage pulse power from power sourcing equipment at a powered device, synchronizing the powered device with a waveform of the low voltage pulse power received from the power sourcing equipment, and operating the powered device with high voltage pulse power received from the power sourcing equipment.

公开(公告)号：US20200153337A1

公开(公告)日：2020-05-14

申请号：US16191308

申请日：2018-11-14

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Douglas Paul Arduini ,  Joel Richard Goergen ,  Sung Kee Baek

IPC: H02M3/158 ,  H02M1/42 ,  H02M3/335 ,  G06F1/28

Abstract: In one embodiment, an apparatus includes a first stage comprising a first active switch, a first resonant inductor, and a resonant capacitor and a second stage comprising a second active switch, a second resonant inductor, and a filter capacitor. The first and second stages form a non-isolated multi-resonant converter for converting a DC input voltage to a DC output voltage.

公开(公告)号：US12218770B2

公开(公告)日：2025-02-04

申请号：US18486238

申请日：2023-10-13

Applicant: Cisco Technology, Inc.

Inventor： Chad M. Jones ,  Joel Richard Goergen ,  George Allan Zimmerman ,  Richard Anthony O'Brien ,  Douglas Paul Arduini ,  Jason DeWayne Potterf ,  Sung Kee Baek

IPC: H04L12/10 ,  H03M13/03 ,  H03M13/37 ,  H04B3/54 ,  H04L41/12 ,  H04W80/02 ,  H03M13/15

Abstract: In one embodiment, a method includes transmitting pulse power on two wire pairs, the pulse power comprising a plurality of high voltage pulses with the high voltage pulses on the wire pairs offset between the wire pairs to provide continuous power, performing low voltage fault detection on each of the wire pairs between the high voltage pulses, and transmitting data on at least one of the wire pairs during transmittal of the high voltage pulses. Data transmittal is suspended during the low voltage fault detection.

公开(公告)号：US11831109B2

公开(公告)日：2023-11-28

申请号：US17122165

申请日：2020-12-15

Applicant: CISCO TECHNOLOGY, INC.

Inventor： Douglas Paul Arduini ,  Sung Kee Baek ,  Joel Richard Goergen

IPC: H02H1/00 ,  H02H1/04 ,  H02H3/22 ,  H02H9/06 ,  H01R13/66 ,  H01R13/713

CPC classification number: H01R13/6666 ,  H01R13/6683 ,  H01R13/713

Abstract: In one embodiment, and apparatus includes an electrical socket for connection with an electrical plug, a sensor for identifying a secure connection between the electrical socket and the electrical plug, and an electronic controller electrically coupled to the electrical socket and comprising a power input for receiving power. The electronic controller is operable to transmit power to the electrical socket upon receiving a signal from the sensor identifying the secure connection between the electrical socket and the electrical plug and shut off or turn on power to the electrical socket upon receiving an external input to the electronic controller. A method is also disclosed herein. The apparatus and method provide an electronic controlled power switch or circuit breaker safety device.

公开(公告)号：US20230223988A1

公开(公告)日：2023-07-13

申请号：US18187006

申请日：2023-03-21

Applicant: Cisco Technology, Inc.

Inventor： Douglas Paul Arduini ,  Ruqi Li ,  Chad M. Jones ,  Sung Kee Baek ,  Jason DeWayne Potterf ,  Joel Richard Goergen

IPC: G06F1/30

CPC classification number: G06F1/305

Abstract: Techniques are provided for detecting a fault across a pair of lines. Pulse power is applied across the pair of lines. The pulse power comprises alternating pulse on-time intervals and pulse off-time intervals. During a pulse off-time interval, a resistor is connected across the pair of lines and then disconnected when a voltage across the pair of lines reaches a first droop percentage in a first period of time. After disconnecting the resistor, it is determined whether the voltage across the pair of lines droops at least a second droop percentage within a second period of time that begins after the first period of time. Occurrence of a line-to-line fault across the pair of lines is determined when the voltage across the pair of lines droops by at least the second droop percentage or more within the second period of time.