Ball grid array current meter with a current sense loop
US11226369B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Sep 26, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R15/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
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). A current sense loop can be fabricated on a wiring plane of the PCB to encircle a current supply via that supplies current to an IC mounted on the BGA package. A MUX/Sequencer can sequentially connect wires of the current sense loop to an amplifier. The amplifier can amplify a voltage induced on the current sense mesh 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.