Karl H Jacobs

US Patent:

20190327101, Oct 24, 2019

Filed:

Jul 2, 2019

Appl. No.:

16/460570

Inventors:

- Dallas TX, US
David N. Abramson - Hooksett NH, US
Karl H. Jacobs - Hampton NH, US

International Classification:

H04L 12/10
G06F 1/26
H02J 3/06
H02J 4/00

Abstract:

Disclosed examples include redundant Power over Ethernet (PoE) systems, powered device (PD) controllers and methods in which a first PD controller sends a signal to indicate to the other PD controllers that the first PD controller is powered, and a second PD controller newly connected or reconnected to a corresponding power sourcing equipment (PSE) refrains from turning off a shared DC-DC converter, and the second PD controller waits to allow an inrush current delay of the corresponding PSE to complete before allowing current flow between the DC-DC converter and the corresponding PSE, and the second PD controller selectively provides a signal to request an application circuit powered by the DC-DC converter to temporarily reduce its power consumption below a predetermined value if the corresponding PSE is configured to provide no more than the predetermined value of power.

US Patent:

20180324910, Nov 8, 2018

Filed:

Jul 17, 2018

Appl. No.:

16/037465

Inventors:

- Dallas TX, US
David N. Abramson - Hooksett NH, US
Karl H. Jacobs - Hampton NH, US

International Classification:

H05B 33/08
H04L 12/40
H04L 12/10
H04L 12/12
H05B 37/02

Abstract:

In a Power over Ethernet (PoE) system, a Powered Device (PD) having circuitry to measure the load current from a Power Sourcing Equipment (PSE) in the PD. Circuitry compares the measured load current with a first threshold. Circuitry automatically generates load pulses for signaling the PSE, that power to the PD should be maintained.

US Patent:

20170041153, Feb 9, 2017

Filed:

Aug 4, 2016

Appl. No.:

15/228338

Inventors:

- Dallas TX, US
David N. Abramson - Hooksett NH, US
Karl H. Jacobs - Hampton NH, US

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H04L 12/10

Abstract:

Disclosed examples include redundant Power over Ethernet (PoE) systems, powered device (PD) controllers and methods in which a first PD controller sends a signal to indicate to the other PD controllers that the first PD controller is powered, and a second PD controller newly connected or reconnected to a corresponding power sourcing equipment (PSE) refrains from turning off a shared DC-DC converter, and the second PD controller waits to allow an inrush current delay of the corresponding PSE to complete before allowing current flow between the DC-DC converter and the corresponding PSE, and the second PD controller selectively provides a signal to request an application circuit powered by the DC-DC converter to temporarily reduce its power consumption below a predetermined value if the corresponding PSE is configured to provide no more than the predetermined value of power.

US Patent:

20160095175, Mar 31, 2016

Filed:

Sep 28, 2015

Appl. No.:

14/867635

Inventors:

- Dallas TX, US
David N. Abramson - Hooksett NH, US
Karl H. Jacobs - Hampton NH, US

International Classification:

H05B 33/08
H04L 12/10

Abstract:

In a Power over Ethernet (PoE) system, a Powered Device (PD) having circuitry to measure the load current from a Power Sourcing Equipment (PSE) in the PD. Circuitry compares the measured load current with a first threshold. Circuitry automatically generates load pulses for signaling the PSE, that power to the PD should be maintained.