Jason D Ross

US Patent:

20200373286, Nov 26, 2020

Filed:

May 24, 2019

Appl. No.:

16/422072

Inventors:

- Nashua NH, US
Jamie A. Bernard - Midland VA, US
Alan F. Dennis - Centreville VA, US
Jane O. Gilliam - Centreville VA, US
Jason F. Ross - Haymarket VA, US
Keith K. Sturcken - Nokesville VA, US
Dale A Rickard - Manassas VA, US

Assignee:

BAE SYSTEMS Information and Electronic Systems Integration Inc. - Nashua NH

International Classification:

H01L 25/16
H01L 23/538
H01L 23/00
H01L 23/64
H01L 25/00
H01L 23/498
H01L 23/367

Abstract:

A multi-chip module hybrid integrated circuit (MCM-HIC) provides cold spare support to an apparatus comprising a plurality of ICs and/or other circuits that are not cold spare compliant. At least one core IC and at least one cold spare chiplet are installed on an interconnecting substrate having a plurality of power zones to which power can be applied and withdrawn as needed. When powered, the cold spare chiplets serve as mediators and interfaces between the non cold spare compliant circuits. When the cold spare chiplets are at least partly unpowered, they protect all interconnected circuits, and ensure that interconnected circuits that remain powered are not hindered by unpowered interconnected circuits. Cold spare chiplets can extend across boundaries between power zones. External circuits can be exclusively interfaced to a subset of the power zones. Separate power circuits within a power zone can be sequenced during application and withdrawal of power.

US Patent:

20190045675, Feb 7, 2019

Filed:

Aug 3, 2017

Appl. No.:

15/668017

Inventors:

- Nashua NH, US
Lloyd Brown - Fredericksburg VA, US
Patrick Fleming - Redondo Beach CA, US
Jason F. Ross - Haymarket VA, US

International Classification:

H05K 9/00
H04J 3/04

Abstract:

A system for limiting or diminishing current to unpowered Serializer/Deserializer (SerDes) circuitry is provided. The system comprises receiver input termination circuitry and a cold spare circuitry. The receiver input circuitry comprises a termination resistor and an N-type metal oxide silicon field effect transistor (MOSFET). The cold spare circuitry comprises a first MOSFET and a second MOSFET. When the system is powered on, an input current flows to the receiver input termination circuit to be discharged by the N-type MOSFET which is electrically connected to a ground. When the system is powered off, the input current flows to the cold spare circuitry to discharge the input current. Discharging electrons between the first MOSFET and the second MOSFET depends on the polarity of an accumulated voltage.