US 12,188,966 B2
Apparatus and method for embedding current measurement and ringing suppression in multichip modules
Andrew N. Lemmon, Tuscaloosa, AL (US); and Ali Shahabi, Tuscaloosa, AL (US)
Assigned to The Board of Trustees of The University of Alabama, Tuscaloosa, AL (US)
Filed by The Board of Trustees of The University of Alabama, Tuscaloosa, AL (US)
Filed on Jan. 12, 2024, as Appl. No. 18/411,847.
Application 18/411,847 is a division of application No. 17/044,133, granted, now 11,913,974, previously published as PCT/US2019/025482, filed on Apr. 3, 2019.
Claims priority of provisional application 62/652,125, filed on Apr. 3, 2018.
Prior Publication US 2024/0151747 A1, May 9, 2024
Int. Cl. G01R 15/18 (2006.01); G01R 1/22 (2006.01); H01F 38/28 (2006.01); H01F 38/30 (2006.01)
CPC G01R 15/183 (2013.01) [G01R 1/22 (2013.01); G01R 15/181 (2013.01); H01F 38/28 (2013.01); H01F 38/30 (2013.01); H01F 2038/305 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A multichip power module comprising:
a plurality of multi-chip power module terminals;
a magnetic core based current transformer having an insertion impedance Zin and turns ratio N, a burden resistor having resistance RB and a filter, the filter comprising a capacitance Cp, an inductance Lp and a resistance Rp;
wherein Cp, Lp and Rp are selected such that Zin remains above a minimum effective value across a known frequency range;
wherein current measurement is taken across the burden resistor;
wherein the magnetic core based current transformer is positioned around a portion of at least one multi-chip power module terminal of the plurality of multi-chip power module terminals.