Inventor · disambiguated record
James Sigamani
Also filed as: SIGAMANI JAMES
26 granted patents·7 pending applications·208 citations·filing 2005–2024
95Inventor score
Files withASTEC INT LTD25SIGAMANI JAMES5ADVANCED ENERGY IND INC1AES GLOBAL HOLDINGS PTE LTD1PHADKE VIJAY G1
Top patents by PatentIndex Score
33 records- 0197US11108329B1Switch-mode power supplies including three-level LLC circuits for low line and high line operationASTEC INT LTD·Filed 2020·Granted Aug 31, 2021·9 cites·20 claims
- 0297US10742123B1Low common mode noise transformers and switch-mode DC-DC power convertersASTEC INT LTD·Filed 2019·Granted Aug 11, 2020·18 cites·13 claims
- 0396US11557976B2Three-phase LLC power supply circuit for high voltage bus inputASTEC INT LTD·Filed 2020·Granted Jan 17, 2023·3 cites·20 claims
- 0495US11652424B2Switch-mode power supplies including three-level LLC circuitsASTEC INT LTD·Filed 2022·Granted May 16, 2023·3 cites·20 claims
- 0595US11146176B2Switch-mode power supplies including three-level LLC circuitsASTEC INT LTD·Filed 2020·Granted Oct 12, 2021·5 cites·20 claims
- 0695US7596007B2Multiphase DC to DC converterASTEC INT LTD·Filed 2006·Granted Sep 29, 2009·63 cites·23 claims
- 0794US12101032B2Multi-phase voltage converter current balancingASTEC INT LTD·Filed 2022·Granted Sep 24, 2024·2 cites·20 claims
- 0894US10224828B1DC-DC power converters and methods of operating DC-DC power convertersASTEC INT LTD·Filed 2018·Granted Mar 5, 2019·27 cites·23 claims
- 0991US9240724B2Multiphase DC/DC converters and control circuits for controlling converters using fixed and/or variable frequenciesASTEC INT LTD·Filed 2013·Granted Jan 19, 2016·10 cites·7 claims
- 1089US11121633B2Low common mode noise transformers and switch-mode DC-DC power convertersASTEC INT LTD·Filed 2019·Granted Sep 14, 2021·2 cites·6 claims
- 1189US9450496B2Multi-stage power converters and methods for varying a regulated voltage of one stage as a function of an output current of another stageASTEC INT LTD·Filed 2014·Granted Sep 20, 2016·11 cites·23 claims
- 1288US7616464B2Reverse current control system for a power converterASTEC INT LTD·Filed 2005·Granted Nov 10, 2009·27 cites·20 claims
- 1387US8861230B2Control circuits for power convertersSIGAMANI JAMES·Filed 2012·Granted Oct 14, 2014·10 cites·18 claims
- 1483US11601060B2Switch-mode power supplies including three-level LLC circuits for low line and high line operationASTEC INT LTD·Filed 2021·Granted Mar 7, 2023·1 cites·20 claims
- 1582US11817783B2Controlling reverse current in switched mode power supplies to achieve zero voltage switchingASTEC INT LTD·Filed 2022·Granted Nov 14, 2023·1 cites·19 claims
- 1680US11283365B2Switch-mode power supplies including three-level LLC circuitsASTEC INT LTD·Filed 2020·Granted Mar 22, 2022·1 cites·20 claims
- 1780US2025015726A1Multi-phase voltage converter current balancingASTEC INT LTD·Filed 2024·Application pending·0 cites
- 1879US11251705B2Controlling reverse current in switched mode power supplies to achieve zero voltage switchingASTEC INT LTD·Filed 2020·Granted Feb 15, 2022·2 cites·19 claims
- 1976US11848616B2Three-phase LLC power supply circuit for high voltage bus inputASTEC INT LTD·Filed 2023·Granted Dec 19, 2023·0 cites·19 claims
- 2076US2021408919A1Low common mode noise transformers and switch-mode dc-dc power convertersASTEC INT LTD·Filed 2021·Application pending·0 cites
- 2174US8842451B2Power systems for photovoltaic and DC input sourcesPHADKE VIJAY G·Filed 2011·Granted Sep 23, 2014·4 cites·23 claims
- 2271US9906121B2Control circuits and methods for transitioning between power converter control modesASTEC INT LTD·Filed 2015·Granted Feb 27, 2018·2 cites·19 claims
- 2370US9065325B2Control circuits for power convertersASTEC INT LTD·Filed 2014·Granted Jun 23, 2015·2 cites·20 claims
- 2460US2025132685A1Multi-phase voltage converter current balancingADVANCED ENERGY IND INC·Filed 2024·Application pending·0 cites
- 2559US8488350B2DC-AC invertersSIGAMANI JAMES·Filed 2009·Granted Jul 16, 2013·5 cites·28 claims
- 2655US11749433B2Transformers having integrated magnetic structures for power convertersASTEC INT LTD·Filed 2019·Granted Sep 5, 2023·0 cites·12 claims
- 2750US9906135B2Multiphase DC/DC converters and control circuits for controlling converters using fixed and/or variable frequenciesASTEC INT LTD·Filed 2015·Granted Feb 27, 2018·0 cites·20 claims
- 2849US11736024B1Current balancing in coupled transformersAES GLOBAL HOLDINGS PTE LTD·Filed 2022·Granted Aug 22, 2023·0 cites·20 claims
- 2941US10476393B2Modifiable DC-DC power converters for providing different output voltagesASTEC INT LTD·Filed 2016·Granted Nov 12, 2019·0 cites·17 claims
- 3038US2009085543A1Variable Output Voltage Power ConverterASTEC INT LTD·Filed 2008·Application pending·0 cites
- 3138US2012075898A1Photovoltaic Power Converters and Closed Loop Maximum Power Point TrackingSIGAMANI JAMES·Filed 2010·Application pending·0 cites
- 3234US2007133232A1Technique to improve dynamic response of two-stage convertersSIGAMANI JAMES·Filed 2005·Application pending·0 cites
- 3326US2007229047A1Tapped inductor buck dc-dc converterSIGAMANI JAMES·Filed 2006·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →