Dr. Praveen Shenoy
Founder and Chief Consultant, POWER DEVICE TECHNOLOGY
Dean(Research), RICHARD FEYNMAN NANOTECHNOLOGY RESEARCH CENTRE,
Professor (Dept. of ECE), MANGALAM COLLEGE OF ENGINEERING.
Education
Ph.D, Electrical Engineering, NORTH CAROLINA STATE UNIVERSITY, RALEIGH., USA (1997),
Advisor: Prof. B. Jayant Baliga
“M.Tech, Electrical Engineering, Indian Institute of Technology(IIT), Madras, India. (1993)
Research Experience and Honors (In Reverse Chronological Order)
Founder and Chief Consultant, Power Device Technology (2009-Present).
Sr. Manager & Head, Device Technology Center, Vishay Siliconix, Pune, India (2007-2009).
Senior Engineering Manager, Device Concepts & New Product Development, Fairchild Semiconductor, Mountaintop, PA, USA (2005-2007). Fairchild award for SiC Schottky diode technology development and Trench NPT IGBT (2006)
Principal Engineer, Worldwide HV device design & Manager, Failure analysis, Fairchild Semiconductor, Mountaintop, PA, USA (2004-2005).
Group Leader, AC/DC Team, Intersil/Fairchild Semiconductor, Mountaintop, PA, USA (2000-2004). He was awarded “Fairchild’s elite Key Technologist” Award, 2001-2004
Staff Engineer, Intersil/Harris Semiconductor, Mountaintop, PA, USA (1997-2000).
Harris performance award- SMPS IGBT development team award, 1999.
Research Assistant, Power Semiconductor Research Center, NCSU, USA (1993-1997).
Patents/ Disclosures (17 Issued US Patents)
“Static Induction Transistors Having Heterojunction Gates and Methods of Forming Same” US Patent 5,753,938 Issued on May 19, 1998.
“Edge termination for silicon power devices” US Patent 6,242,784 issued June 5, 2001.
“Trench MOFET with reduced miller capacitance” US Patent 6,573,560 issued June 3, 2003.
“Edge termination for silicon power devices” US Patent 6,534,347 issued March 18, 2003.
“A Quick Punch Through (QPT) IGBT designed to provide gate controllable di/dt and reduced EMI during inductive turn-off” US Patent 6,831,329 issued Dec 14 2004
“Edge termination for silicon power devices” US Patent 6,362,026 issued March 26, 2002.
“Technique for forming emitter ballast resistors in IGBTs and using the enhanced body effect to maximize short-circuit ruggedness” US Patent 6,437,419 issued August 20, 2002.
“Soft recovery power diode” US Patent 6,737,731 issued May 18 2004.
“Edge termination for silicon power devices” US Patent 6,759,719 issued July 6, 2004.
“Edge termination for silicon power devices” US Patent 7,166,866 issued January 23, 2007.
“Schottky diode structure to reduce capacitance and switching losses and method of making same” US Patent 7,199,442 issued April 3, 2007.
“MOS-gated transistor with reduced Miller capacitance” US Patent 7,265,415 issued September 4,2007.
“Schottky diode structure to reduce capacitance and switching losses and method of making same” US Patent 7,468,314 issued December 23, 2008.
“Method of making a MOS-gated transistor with reduced miller capacitance”, US Patent 7,534,683 issued May 19, 2009.
“Wide bandgap device in parallel with a device that has a lower avalanche breakdown voltage and a higher forward voltage drop than the wide bandgap device” US Patent 7,586,156 issued September 8,2009.
“Wide bandgap device in parallel with a device that has a lower avalanche breakdown voltage and a higher forward voltage drop than the wide bandgap device” US Patent 7,859,057 issued December 28,2010.
“Structure and method for forming accumulation-mode field effect transistor with improved current capability” US Patent 7,936,008 issued May 3, 2011.
Superjunction structures for power devices and methods of manufacture” filed September 2008.
Two more applications/divisions pending.
Filed 4 invention disclosures on the new trench based Super Junction devices.
List of Publication
P.M Shenoy, A.Moki, B.J.Baliga, D.Alok, K.Wongchotigul, and M.Spencer, “Vertical Schottky barrier diodes on 3C-SiC grown on Si,” presented at IEDM, San Francisco, December 1994.
A.Moki, P.M.Shenoy, D.Alok, B.J.Baliga, K.Wongchotigul, and M.Spencer, “Low resistivity as-deposited ohmic contacts to 3C-SiC,” Journal of Electronic Materials, vol. 24, No. 4, 1995.
P.M.Shenoy and B.J.Baliga, “Planar, Ion Implanted, High Voltage 6H-SiC P-N Junction Diodes,” IEEE Electron Device Lett., Vol. 16, No. 10, 1995.
P.M.Shenoy and B.J.Baliga, “Planar, high voltage, boron implanted 6H-SiC P-N junction diodes,” presented at ICSCRM, Kyoto (Japan), September 1995.
P.M.Shenoy and B.J.Baliga, “High Voltage P+ Polysilicon/N- 6H-SiC Heterojunction Diodes,” Electronic Letters, Vol.33, No.12, June 1997.
P.M.Shenoy, V.Bantval, M.Kothandaraman and B.J.Baliga, “ A Novel P+ Polysilicon/N- 6H-SiC Heterojunction Trench Gate Vertical FET,” presented at ISPSD, Weimar (Germany), May 1997.
P.M.Shenoy and B.J.Baliga, “High Voltage Planar 6H-SiC ACCUFET,” presented at ICSCIII-N’97, Stockholm, Sweden, Sept.’97.
P.M.Shenoy and B.J.Baliga, “The Planar 6H-SiC ACCUFET: A New High-Voltage Power MOSFET Structure,” IEEE Electron Device Lett., Vol.18 , No. 12, 1997
R.K.Chilukuri, P.M.Shenoy and B.J.Baliga, “Comparison of 6H-SiC and 4H-SiC High-Voltage Planar ACCUFETs,” presented at ISPSD, Kyoto (Japan), June 1998.
G.M.Dolny etal “Static and Dynamic Characterization of Large-Area High Current Density SiC Schottky Diodes,” presented at Device Research Conference, June 1998.
R.K.Chilukuri, P.M.Shenoy and B.J.Baliga, “High Temperature Operation of SiC Planar ACCUFET” presented at the Industrial Application Society Conference, Oct 1998.
P.M.Shenoy and B.J.Baliga, “Analysis and Optimization of the Planar 6H-SiC ACCUFET “ Solid State Electronics, Vol.43, pp.213-220, January 1999.
P.M.Shenoy etal “Analysis of the Effect of Charge Imbalance on the Static and Dynamic Characteristics of the Super Junction MOSFET,” presented at ISPSD, Toronto, May 1999.
S.Shekhawat etal “Harris New Generation SMPS IGBT Opens Door for a New Era in SMPS Market”, presented at PCIM conference, Germany, June 1999.
A.H.Craig etal “SMPS IGBT Demonstrates Superior Performance Compared to MOSFETs in Various Switch Mode Power Supply Applications”, presented at PCIM conference, USA.
S.Shekhawat etal “UIS-rated SMPS IGBT opens door for a new SMPS era” presented at PCIM Europe, June 2000.
P.M.Shenoy etal “High performance 300V IGBT”, presented at ISPSD, Toulouse, France, May 2000.
J.Yedinak etal “Optimizing 600V Punchthrough IGBTs for Unclamped Inductive Switching (UIS)” , presented at ISPSD, Toulouse, France, May 2000.
S.Shekhawat etal “Intersil’s New Stealth Diode Improves SMPS IGBT Switching Speed”, presented at PCIM conference, Boston, MA, Oct. 2000
S.Shekhawat etal “Stealth Diode Cuts SMPS IGBT Switching Loss-Quietly” published in PCIM magazine, October 2000.
P.M.Shenoy etal “Intersil SMPS II IGBTs offer high UIS rating, low gate charge and low turn-on loss” presented at PCIM conference, Europe, June 2001.
P.M.Shenoy etal “The Influence of Body Effect on the Short-circuit Ruggedness of Emitter Ballasted IGBTs” presented at ISPSD, Osaka, Japan, June 2001.
D.T.Morisette etal, IEEE Trans. Electron Devices, Vol. 48, 349 (2001)
S.Shekhawat etal “New Stealth Soft Recovery Diode Reduces SMPS-IGBT Switching Loss” presented at PCIM conference, Europe, June 2001.
J.Yedinak etal, “Enhanced IGBT Self Clamped Inductive Switching (SCIS) Capability through Vertical Doping Profile and Cell Optimization” presented at ISPSD, SantaFe New Mexico, June 2002.
S.Shekhawat etal “SMPS IGBT and new FRFET improves the reliability of Phase-Shifted ZVS PWM Full Bridge DC/DC Converter” presented at PCIM conference, Europe, June 2002.
P.M.Shenoy etal “Soft Recovery Diode with Low Reverse Recovery Current” presented at IBM Power Technology Symposium, Minneapolis, Minnesota, September 2002.
S.Shekhawat etal “Stealth Diode and SMPS MOSFET Helps in Controlling EMI in Power Supplies” published in Conformity magazine, September 2002.
S.Shekhawat etal “New FRFET Increases the Reliability of Phase-Shifted ZVS PWM Full Bridge Converter” published in power systems design magazine, February 2004.
P.M.Shenoy etal “Fairchild’s New NPT 2 IGBT Opens Door for a New Era in UPS, Motor Drive and SMPS Market” presented at Power Systems World, Chicago, November 2004.
S.Shekhawat etal “Stealth Diode and UniFET Reduces EMI in Power Supplies” to be published in Power Electronics in Europe magazine, January 2005.
S.Shekhawat etal “Highly Optimized Planar UNIFET Competes with Super-Junction MOSFET at 500V Level in PFC and Zero Voltage Switching DC/DC Applications” presented at PCIM China, March 2005.
J.Shovlin etal “Silicon Carbide: Barriers to Manufacturable Devices” presented at ASMC conference, Munich,Germany, April 2005.
P.M.Shenoy etal “Application Specific 1200V Planar and Trench IGBTs” presented at APEC, Dallas, March 2006.
P.M.Shenoy etal “Reverse Recovery Evaluation of Conventional and Super Junction MOSFET Body Diodes” presented at PCIM, China, March 2006.
S.Shekhawat etal “Evaluation of Non Punch Through IGBT Technologies for Soft and Hard Switching Applications” presented at PCIM, Germany, May 2006.
S.Shekhawat etal “ A Fast Body Diode UNIFET Analyzed and tested Under Zero Voltage Switching” to be published in Bodo’s Power systems, November 2006
P.M.Shenoy etal “Super Junction MOSFET with Robust Body Diode” presented at Power Systems World, October 2006.
P.M.Shenoy etal “Low Qgd 200 to 250V UltraFET Trench MOSFETs with low Trr and Qrr for Synchronous Rectification, AC/DC and DC/DC applications” presented at PCIM, China, March 2007.
P.M.Shenoy “High Voltage Superjunction Technology Development Trends” an invited paper presented at IWPSD, India, December, 2011.