US 12,326,478 B2
Multiphase trans-inductor voltage regulator fault diagnostic
Alessandro Zafarana, Milan (IT); Salvatore Leone, Milan (IT); and Chun-Yen Lin, Taoyuan (TW)
Assigned to SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Scottsdale, AZ (US)
Filed by SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC, Phoenix, AZ (US)
Filed on May 31, 2022, as Appl. No. 17/804,709.
Claims priority of provisional application 63/265,844, filed on Dec. 22, 2021.
Prior Publication US 2023/0194625 A1, Jun. 22, 2023
Int. Cl. G01R 31/40 (2020.01); G01R 19/165 (2006.01); H02M 7/217 (2006.01)
CPC G01R 31/40 (2013.01) [G01R 19/165 (2013.01); H02M 7/217 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of detecting electrical faults in a multiphase power converter, the method comprising:
driving, by a controller of the multiphase power converter, a first phase of the multiphase power converter, the first phase comprising a phase-one transformer module;
driving, by the controller, a second phase of the multiphase power converter, the second phase comprising a phase-two transformer module distinct from the phase-one transformer module;
testing, by the controller of the multiphase power converter, for a phase-one electrical fault associated with the phase-one transformer module;
testing, by the controller, for a phase-two electrical fault associated with the phase-two transformer module, wherein testing for the phase-one electrical fault and the phase-two electrical fault is conducted without measuring an AC portion of a respective phase current; and
driving, by the controller, a fault indicator in the presence of a phase-one or phase-two electrical fault.