Invention Grant
- Patent Title: Ball grid array current meter with a current sense wire
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Application No.: US18062125Application Date: 2022-12-06
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Publication No.: US12174240B2Publication Date: 2024-12-24
- Inventor: Layne A. Berge , Matthew Doyle , Kyle Schoneck , Thomas W. Liang , Matthew A. Walther , Jason J. Bjorgaard , John R. Dangler
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Michael A. Petrocelli
- Main IPC: H01L21/44
- IPC: H01L21/44 ; G01R19/25 ; G01R31/28 ; H01L21/48 ; H01L21/50 ; H01L23/00 ; H01L23/498 ; H01L25/065 ; B23K101/42

Abstract:
Electrical current flow in a ball grid array (BGA) package can be measured by an apparatus including an integrated circuit (IC) electrically connected to the BGA package. Solder balls connect the BGA package to a printed circuit board (PCB) and are arranged to provide a contiguous channel for a current sense wire. A subset of solder balls is electrically connected to supply current from the PCB through the BGA package to the IC. The current sense wire is attached to the upper surface of the PCB, within the contiguous channel, and surrounds the subset of solder balls. An amplifier is electrically connected to the current sense wire ends to amplify a voltage induced on the current sense wire by current flow into the BGA package. A sensing analog-to-digital converter (ADC) is electrically connected to convert a voltage at the output of the amplifier into digital output signals.
Information query
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