CPES Achievements Showcase

SHOWCASE

CPES researchers develop nearly 100 new advances each year.

Please visit our Research Showcase to explore recent new discoveries

Shielding study of 6.78 MHz Omnidirectional Wireless Power Transfer System

Phase-current Sensor and Short-circuit Detection based on Rogowski Coils Integrated with Gate Driver for 1.2 kV SiC MOSFET Half-bridge Module

UV-curable Ferrite Paste for Additive Manufacturing of Power Magnetics

Simplified Digital Closed-loop Current Control of Three-phase Photovoltaic Inverter Operating in Triangular Conduction Mode

Showcase Archives

• 2024
• • Heterogenous Integration, Packaging, and Prototyping of a SiC-based Medium Voltage Modular Converter
  • 2 kV, 0.7 mΩ·cm2 Vertical Ga2O3 Superjunction Schottky Rectifier with Dynamic Robustness
  • Modular Coaxial Power Converter for High-Density Integration into Medium-Voltage Cables
  • Gate Robustness and Reliability of P-Gate GaN HEMT Evaluated by a Circuit Method
  • Double-Side Cooled 1.2 kV, 300 A SiC MOSFET Phase-Leg Modules for 200 kW, > 100 kW/L Traction Inverters
  • High-Density Vertical Power Delivery Voltage Regulator Module with Twisted Core Inductor
  • A CLLC Resonant Converter with Planar Magnetics and Devices
  • Common-Mode EMI Noise Modeling and Improvement with Key Parasitics Optimization and Impedance Balance Technique for Three-Phase Three-level Back-to-Back Bridge Interconnection-Based Filter
  • Design of a Compact Planar Rogowski Coil Current Sensor
  • Selective Phase-Shifting Control of Secondary-Rectifiers in Resonant Converters with Matrix Transformers
  • Three-Level Flying-Capacitor-Based 100 W USB-C PD GaN Charger in Aircraft Applications
  • Design of High-Power Wide-Gain-Range Bidirectional CLLC Converter
  • Small-Signal Modeling of Multiphase V2 Constant On-Time Control with Phase Overlapping
  • Hybrid Modular Multilevel Converters for High-AC/Low-DC Medium-Voltage Applications
  • A Passive Balancing Method for Dynamic Current Sharing of Paralleled SiC MOSFETs with Kelvin-Source Connection
  • Protection Circuitry Design to Mitigate Failure Propagation for 10 kV SiC MOSFETs in a 22 kV DC 13.8 kV AC Flying Capacitor Multilevel Converter
  • Design Challenges of the 22 kV Solid-State Switch for Capacitor Discharge Application Based on 3.3 kV SiC MOSFET Super-Cascode
  • Inductor Realization for Substation Converters Absorbed into Lines for Electrical Distribution
• 2022
• • Experimental Verification of a Converter Having Integrated Capacitor Blocked Transistor Cells Using 10 kV SiC MOSFETs
  • High-Efficicency High-Density 6kW 400/48V Power Supply for Data Centers
  • A Multi-Channel High-Frequency Current Link Based Isolated Auxiliary Power Supply for Medium-Voltage Applications
  • Design and Optimization of Power Electronic Interrupter in Medium Voltage Hybrid DC Circuit Breaker
  • 10 kV, 39 mΩ·cm² Multi-Channel AlGaN/GaN Schottky Barrier Diodes
• 2021
• • Control of Converters Having Integrated Capacitor Blocked Transistor Cells
  • A WBG Based 400/48V LLC Converter Operating at 500 KHz with 99 % Efficiency
  • Insulation Design of Wireless Auxiliary Power Supply for Medium Voltage Converters
  • A Distributed Communication and Control System for Modular Power Converters with Sub-ns Synchronization Accuracy
  • Medium Voltage PCB-based DC Bus Design Considering Current Handling Capability
  • Medium Voltage Solid State Transformer Based Extreme Fast EV Charger
  • Control Technique for High-Frequency Soft-Switching Three-Phase Inverter Under Grid Fault Condition
  • Modeling and Control for 48V/1V Sigma Converter
  • A Three Phase CLLC Converter with Improved Planar Integrated Transformer for Fast Charger Applications
  • High Surge Current Capability in Ultra-Wide Bandgap Gallium Oxide Power Rectifiers through Device-Package Co-Optimization
  • Design of a High-Density Integrated Power Electronics Building Block (iPEBB) Based on 1.7 kV SiC MOSFETs on a Common Substrate
  • Optimization of Electric-Field Grading Plates in a PCB-Integrated Bus Bar for a High-Density 10 kV SiC MOSFET Power Module
  • Design of High-density Isolated Bi-directional Soft-switching Resonant DC-DC Converter with Partial Power Processing
• 2020
• • The Optimal Design of A High-Temperature PCB-Embedded Transformer GaN-Based Gate-Drive Power Supply with A Wide-Input Range
  • Withstand Physics and Failure Mechanisms of p-Gate GaN HEMTs under Transient Surge Energy
  • Common-Mode EMI Noise Reduction for Interleaved Multichannel GaN-Based PFC Converter
  • Insulation Design and Assessment of a 16 kV Rated PCB Based Planar DC Bus with Distributed Capacitors
  • Design and Assessment of a Medium-Voltage Power Cell based on High-Current, 10 kV SiC MOSFET Half-Bridge Modules
  • Medium Voltage AC to 400V DC Rectifier for Data Center
  • High-voltage vertical Ga2O3 power rectifiers operational at high temperatures up to 600 K
  • Design-Oriented Equivalent Circuit Model for Resonant Converters
  • A Synchronous Distributed Control and Communication Network for SiC-Based Modular Power Converters
  • Active Voltage Balancing Embedded Digital Gate Driver for Series-Connected 10 kV SiC MOSFETs
• 2019
• • 1 MHz, 48 V LLC Bus Converter with Simplified Optimal Trajectory Control
  • Shielding study of 6.78 MHz Omnidirectional Wireless Power Transfer System
  • Three-phase Interleaved LLC Resonant Converter with Integrated Planar Magnetics for Telecom and Server Applications
  • Design of a Zero-voltage-switching Class E Inverter with Fixed Gain
  • Sigma Converter 48 V Voltage Regulator Module with Wide Voltage Range
  • Simplified Digital Closed-loop Current Control of Three-phase Photovoltaic Inverter Operating in Triangular Conduction Mode
  • Phase-current Sensor and Short-circuit Detection based on Rogowski Coils Integrated with Gate Driver for 1.2 kV SiC MOSFET Half-bridge Module
  • UV-curable Ferrite Paste for Additive Manufacturing of Power Magnetics
  • Heteromagnetic Swinging Inductor (HMSI) And its Application for Power Factor Correction Converters
• 2018
• • A Small-Signal Model of the Sigma Converter with Current Mode Control
  • High-Frequency High-Density Bidirectional EV Charger
  • Analysis and Design of an Overcurrent Protection Scheme Based on Parasitic Inductance of SiC MOSFET Power Module
  • Control of the Modular Multilevel Converter (MMC) Based on the State Plane Analysis and ΣΔ Coordinate Transformation
  • EMI Evaluation and Filter Design of a SiC-Based UPS System
  • Virtual Synchronous Machine Based Control of Photovoltaic (PV) Inverters
  • Critical Mode-Based Soft Switching Modulation for Three-Phase Rectifiers
  • Design, Characteristics, and Application of Pluggable Low-Inductance Switching Power Cell of Paralleled GaN HEMTs
  • A WBG-Based Three Phase 12.5 kW 500 kHz CLLC Resonant Converter with Integrated PCB Winding Transformer
  • Modeling and Design for Integrated Coupled Inductors in Interleaved Three-Level DC-DC Converters
  • Fabrication and Characterization of a High-Density, Planar 10 kV SiC MOSFET Power Module
  • Design of a Novel, High-Density, High-Speed 10 kV SiC MOSFET Module
  • Design and Development of a High-Density, High-Speed 10 kV SiC MOSFET Module
  • Modeling and Design of the Modular Multilevel Converter with Parametric and Model Form Uncertainty Quantification
• 2017
• • High-efficiency High-power-density 380V/12V DC/DC Converter with a Novel Matrix Transformer
  • Two Comparison-Alternative High Temperature PCB-Embedded Transformer Designs for a 2 W Gate Driver Power Supply
  • NiCuZn Ferrite Cores by Gelcasting: Processing and Properties
  • Modeling Resonant Converter in a Rotating Coordinate
  • A High-Frequency Small-Signal Model for Inverse-Charge Constant On-time (IQCOT) Current-Mode Control
  • Predicting the Behavior of a High Switching Frequency SiC-Based Modular Power Converter Based on Low-Power Validation Experiments
  • High-Efficiency High-Power-Density 48/1V Sigma Converter Voltage Regulator Module
  • On-line Measurement of Inward - Outward Impedances for Stability Assessment
  • Critical-Mode-Based Soft-Switching Modulation for Three-Phase Inverters
  • Towards a High Performance Motor Drive System for Aerospace Applications: Topology Evaluation, Converter Optimization and Hardware Verification
  • A Novel WBG-Based Bi-Directional On Board Charger
  • Over-Molded Inductor (OMI) - Feasibility Demonstration in a DC-DC Converter
  • Design and Development of a Novel, High-Density, High-Speed 10 kV SiC MOSFET Module
• 2016
• • A New Inverse Charge Constant On-Time (IQCOT) Control for Noise Performance Improvement in Multi-Phase Operation
  • A New Inverse Charge Constant On-Time (IQCOT) Control for Transient Performance Improvement in Multi-Phase Operation
  • A New Inverse Charge Constant On-time (IQCOT) Control with Ultrafast Load Transient Response
  • Design of a High-Density, Diode-less 1.2 kV, 90 A SiC MOSFET Half-Bridge Power Module
  • Omnidirectional Wireless Power Transfer for Portable Devices
  • Model-Based Design of a Modular Multilevel Converter with Minimized Design Margins
  • Very High-Frequency Integrated VR for Small Portable Devices
  • Design Consideration of MHz Active Clamp Flyback Converter with GaN Devices for Low Power Adapter Application
  • Capacitor Voltage Ripple Reduction for Modular Multilevel Converter with 2nd order Current Injection and Over Modulation
  • Low Frequency Common Mode Voltage Control for Systems Interconnected with Power Converters
  • Comparison of Silicon, SiC and GaN Power Transistor Technologies with Breakdown Voltage Rating from 1.2 kV to 15 kV
  • Modular Scalable Medium-Voltage Impedance Measurement Unit Using 10 kV SiC MOSFET PEBBs
  • A Novel High Efficiency System Architecture for Bi-directional On Board Battery Charger
  • Gate Driver Design for 1.7kV SiC MOSFET Module with Rogowski Current Sensor for Short-circuit Protection
  • Design and Optimization of a High Performance Isolated Three Phase AC/DC Converter
• 2015
• • Analysis and Design of Coupled Inductor for Interleaved Multiphase Three-Level DC-DC Converters
  • Design of 3.3 kW Wireless Inductive Power Transfer System
  • Multi-Step Simplified Optimal Trajectory Control (SOTC) for LLC Resonant Converter
  • Simple Equivalent Circuit Model of a Series Resonant Converter
  • A Novel Phase Lock Loop (PLL)-Based Interleaving Structure for Variable-Frequency Controlled Voltage Regulators
  • Design and Implementation of Interleaved Vienna Rectifier with Greater than 99% Efficiency
  • Balance Technique for MHz Critical Mode PFC Rectifier with Coupled Inductor
  • Improved Unterminated Behavioral Model for Common-Mode EMI Emission of SiC Power Converters with Different Switching Frequencies
  • Magnetic Design and Loss Analysis for High Frequency High Power DC/DC Transformer
  • Improved Unterminated Behavioral Model for Common-Mode EMI Emission of SiC Power Converters with Different Switching Frequencies
  • The Optimal Design of a GaN-based Dual Active Bridge for a Bi-Directional Plug-in Hybrid Electric Vehicle (PHEV) Charger
  • 10 kV, 120 A SiC MOSFET Modules for a Power Electronics Building Block (PEBB)
  • 10 kV, 120 A SiC MOSFET Modules for a Power Electronics Building Block (PEBB)
  • Investigation and Design of a Modular Multilevel Converter in AFE Mode with Minimized Passive Elements
  • New Modulation Scheme for 3-level Active Neutral Point Clamped Converter with Loss and Stress Reduction
• 2014
• • Unified Equivalent Circuit Model of V² Control
  • Characterization of Low-Temperature Sintered Ferrite Laminates for High-Frequency Point-of-Load (POL) Converters
  • Thermal Stability of Al2O3-Filled Silicone-Based Elastomers for Power Electronic Encapsulation
  • Gap Design for Ferrite Cores to Maximize Inductance in the Presence of Non Uniform Saturation
  • Evaluation of GaN-Based MHz Interleaved CRM PFC Converter
  • Energy Management System Control and Experiment for Future Home (Parts 1&2)
  • High Frequency, High Density Point-of-Load (POL) Module with PCB Embedded Coupled Inductor Substrate for VR Application
  • Performance Projection of Vertical High-Voltage GaN power MOSFETs and Comparison to SiC power MOSFETs
  • Design and Integration of Interphase Inductors for Interleaved Three-Phase Voltage-Source-Inverters in DC-fed Motor Drive Systems
  • Bi-directional PHEV Battery Charger based on Normally-off GaN-on-Si Multi-Chip Module
  • Multi-Level Single-Phase Shunt Current Injection Converter Used in Small-Signal dq Impedance Identification
  • Power-Cell Switching-Cycle Capacitor Voltage Control for Modular Multilevel Converters
  • Characterization and Comparison of 1.2 kV SiC Power Semiconductor Devices
  • High-Temperature Characterization and Comparison of 1.2 kV SiC Power MOSFETs
• 2013
• • High Frequency 3D integrated POL Module Based on PCB Embedded Core
  • Size and Weight Dependence of the Single Stage Input EMI Filter on Switching Frequency for Low Voltage Bus Aircraft Applications
  • Magnetic Composite Materials for High Frequency Application
  • Design and Implementation of Three-phase AC Impedance Measurement Unit (IMU) with Series and Shunt Injection
  • A Testbed for Experimental Validation of a Low voltage DC Nanogrid for Buildings
  • Integrated Current Sensor using Giant Magneto Resistive (GMR) Field Detector for Planar Power Module
  • Evaluation and Application of 600V GaN HEMT in Cascode Structure
  • External Ramp Autotuning for Current Mode Control of Switching Converters
  • Dual Active Bridge based Battery Charger for Plug-in Hybrid Electric Vehicle with Charging Current Containing Low Frequency Ripple
  • Influence of Phase-Locked Loop on Input Admittance of Three-Phase Voltage Source Converters
  • Transformer Shielding Technique for Common Mode Noise Reduction in Isolated Converters
  • public/showcase/2013_T4.4.php
  • Influence of High-Frequency Near-Field Coupling between Magnetic Components on EMI Filter Design
  • Impact of Interleaving on EMI Noise Reduction of Paralleled Three Phase Voltage Source Converters
  • A 1200 V, 60 A SiC MOSFET Multi-Chip Phase-Leg Module for High-Temperature, High-Frequency Applications
  • PCB Embedded Magnetics Core with Improved Flake Materials
  • Matrix Transformer for LLC Resonant Converters
  • Optimal Trajectory Control of LLC Resonant Converters for Soft Start-up
  • High Switching Frequency, High Efficiency, Modularized 3-level Neutral Point Clamped Phase Leg Building Block
  • Small Signal Analysis of V² Control Using Current Mode Equivalent Circuit Model
  • Design Considerations for High Frequency Battery Charger with GaN Device
  • Nonlinear Sideband Effects in Small-Signal Input dq Admittance of Six-Pulse Diode Rectifiers
  • Overview of Three-Dimension Integration for Point-of-Load Converters
  • An Update on Recent Advances in Nanosilver Paste for Packaging Power Semiconductor Devices
• 2012
• • Compensation of DC-Link Pulsation in Single-Phase Static Converters
  • Experimental Verification of the Generalized Nyquist Stability Criterion for a Balanced Three-phase Ac System in the Presence of Constant Power Loads
  • Investigation of Tradeoffs Between Efficiency, Power Density and Switching Frequency in Three-Phase Two-Level PWM Boost Rectifier
  • Higher Bus Voltage Impact on Power Converter Power Density
  • Laminated Low Temperature Co-Fired Ceramic Ferrite Materials for High Frequency POL Converters
  • R-Based MPPT Method for Smart Converter PV System
  • Inter-Phase Interleaving for Balance Operation of Three Phase Voltage Source Converter with Low Non-Triple Carrier Ratio
  • Frequency Behavior and Its Stability of Grid-Interface Converter in Distributed Generation Systems
  • A Novel Anti-Islanding Detection Algorithm for Three-Phase Distributed Generation Systems
  • Common-Mode EMI Noise Reduction for Grid-Interface Converter in Low-Voltage DC Distribution System
  • Intergrid: A Future Electronic Energy Network?
  • Analysis and Optimization of Smart Panel-Based PV Converter System
  • Analysis of EMI Terminal Modeling of Switching Power Converters
  • Common-Mode EMI Terminal Modelling of DC-Fed Motor Drives
  • Un-Terminated, Low-Frequency Terminal-Behavioral D-Q Model of Three-Phase Converters
  • Finite Element Analysis of Inductor Core Loss under DC Bias Condition
  • Dynamic Interactions in Hybrid AC/DC Electronic Power Distribution Systems
  • High Frequency High Power Density 3D Integrated Gallium Nitride Based Point of Load Module
• 2011
• • Power Supplies on Chip
  • Lithium-ion Energy Storage Management for DC Nano-Grid System
  • Small-Signal Model of a Voltage Source Inverter (VSI) Considering the Dead-Time Effect and Space Vector Modulation Types
  • Model for Constant On-time V² Control with Combination of Various Types of Output Capacitors
  • Common Mode EMI Noise Characteristics of Low Power AC-DC Converters
  • Characterization of Encapsulants for High-Voltage, High-Temperature Power Electronic Packaging
  • Behavioral EMI modeling for aerospace applications
  • 250°C SiC high density power module development
  • Large-Area Chip Attachment by Sintering Nanosilver Paste: Nondestructive Characterization by X-ray Imaging and Curvature Measurements
  • Design of High-Temperature SiC Three-Phase AC-DC Converter for >100°C Ambient Temperature
  • Common Mode Noise Characteristics of Resonant Converters
  • LLC Resonant Converter Burst Mode Control with Constant Burst Time and Optimal Switching Pattern
  • Non-linear, Hybrid Terminal Behavioral Modeling of a DC-based Nanogrid System
  • Design Optimization of Non-uniform Flux LTCC Inductor Substrate for 3D Integrated POL
  • Core Loss Model for Planar Inductor with Non-uniform Flux Pattern
  • Analytical Inductance Model for Planner Inductor with Non-uniform Flux Pattern
  • LLC Type Resonant Converters with Notch Filter
  • A New High Frequency Core Loss Measurement Method for Arbitrary Excitations
• 2010
• • Characterization of Lead-Free Solder and Sintered Nano-Silver Die-Attach Layers Using Thermal Impedance
  • Predicting Low Frequency Harmonics in Voltage Source Inverter (VSI) Enhanced Average Model
  • A Two-stage High Power Density Single-phase ac-dc Bi-directional PWM Converter for Renewable Energy System
  • Common Mode Noise Characteristics of Resonant Converters
  • Multi-Phase Adaptive On-Time Controlled PFC for Better Light Load Efficiency and EMI Performance
  • Design-Oriented Model for Constant On-Time Control (V² Type)
  • Unified Three-terminal Switch Model for Current Mode Controls
  • A Current Sharing Method for DC-DC Transformer (DCX)
  • Improved Asymmetric Space Vector Modulation for Voltage Source Converters with Low Carrier Ratio
  • Characterization of Encapsulants for High-Voltage, High-Temperature Power Electronic Packaging
  • Thermomechanical Reliability of Nanoscale Silver Paste for Large-Area Device Attachment
  • Thermal Design of Power Module to Minimize Peak Transient Temperature
  • Future Home DC-based Renewable Energy nanoGrid System
• 2009
• • Characterizations and Modeling of SiC MOSFET
  • High Efficiency CLL Resonant Converter with Synchronous Rectifier
  • Flying Capacitor Voltage Balancing Method by Sensing Inductor Current
  • New Loss Measurement Method For High Frequency Magnetic Core
  • Transformer Optimization of DCX for Higher Efficiency and Less Output Capacitors of Sigma Voltage Regulator
  • High Density Low Profile Coupled Inductor Design for Integrated Point-of-Load Converter
  • Common Mode Circulating Current Control of Interleaved Three-Phase Two-Level Voltage-Source Converters with Discontinuous Space-Vector Modulation
  • Hybrid Active and Passive EMI Filter
  • Modular Terminal Behavioral EMI Modeling
  • Three Phase AC Impedance Tester
  • High Frequency Transformer Design for CPU and Telecommunications Applications
  • Energy Storage Capacitor Reduction for Single Phase PWM Rectifier
  • Modeling and Simulation of a High-Temperature SiC JFET/JBS Power Electronics Building Block
  • Design Considerations of a Fast 0-Ω Gate-Drive Circuit for 1.2 kV SiC JFET Devices in Phase-Leg Configuration
  • Investigation of SiC MOSFET for High Switching Frequency Applications
  • Soft-Switching Buck Converter with Quasi-Resonant Operation
  • Improved Phase Detection for Single-Phase, Phase-Locked Loops
  • Single-Phase Islanding Detection using PLL Stability
  • Plug-in Hybrid Electric Vehicle Grid Interconnection and Control
• 2008
• • Modeling of Distributed Power Electronics Systems
  • Modeling and Control Design of AC-DC Single-phase Bi-directional PWM Converter
  • Voltage Control of Single-phase PWM Inverter
  • Characterizations and Modeling of SiC JFET
  • Very High Speed Double-Pulse Tester
  • High Temperature Planar High Density Power Module
  • High Temperature Wirebond Power Module
  • Improved Direct Bond Copper (DBC) Substrate for High Temperature Packaging
  • 10 kW High Power Density Three-Phase AC-DC-AC Converter Using SiC Devices
  • Hybrid CM and DM Inductor Design for EMI Filter
  • Internal Fault Detection and Isolation for Paralleled Voltage Source Converters
  • Interleaving Impact on AC Passive Components of Paralleled Three-Phase Voltage-Source Converters
  • Hybrid Autonomous Electric Power System Testbed
  • High-Efficiency "Sigma" Voltage Regulator
  • Modeling of Constant On-time Control (V² Type) (2008)
  • Effects of Mutual Couplings on Inductor's Performance
  • Integration of Parasitic Cancellation Techniques for EMI Filter Design
  • Investigating the Grounding of EMI Filters to Improve its CM Noise Attenuation
  • Active EMI Filter and Its Applications in Motor Drive
  • CM noise reduction in interleaved multi-phase PFC
  • CM Noise Reduction with Symmetric Topology
  • Reducing High Frequency CM Noise in Balanced PFC
  • High-Power-Density Electronic Ballast for Low Wattage HID lamps
  • EPC cancellation technique for EMI filter
• 2007
• • Integrated Busbar Transmission-Line EMI Filter Achieves 40 dB Attenuation
  • FlexPower - Flexible Interconnect Technology for Power Packaging
  • Three-Dimensional Integration of Power Supply Module
  • High-Voltage Reverse Blocking Integrated GaN MOSFET/Schottky Rectifier
  • Black-box Modular-Terminal-Behavioral Modeling of Power Electronics Converters
  • CPES Legacy: Integrated System Approach Transforms the Power Electronics Discipline
  • Self-Driven ZVS Single-phase Buck (2007)
  • High efficiency Sigma VRs (2007)
  • Modeling of Constant On-time Control (2007)
  • Reducing magnetic size by coupling for high frequency integrated POL converter (2007)
  • Low profile inductor with lateral flux for 3D integrated POL (2007)
  • Interleaving Multi-Channel PFC with Improved Light Load Efficiency (2007)
  • Novel Multi-Element Resonant Converters (2007)
  • Cancellation of CM Parasitic Capacitance for CM Noise Reduction
  • EMI Filter Size Reduction using Balance in PFC converters
  • CM noise reduction in bridgeless PFC converter
  • Ultra Compact Ballast for Low Wattage HID lamps
  • Integrated ignitor for HID ballast
  • Integrated EMI filter for HID ballast
  • High efficiency σ/Sigma Front-End DC/DC (2007)
  • Drives Integration Technologies
  • 3-D Integrated Power Technology
  • Recognition of the Nanoscale Silver Paste Technology and its Successful Transfer to Industry (2007)
• 2006
• • Electromagnetic Noise Containment with Integrated Planar Power Connection
  • Reliable Conductor-Semiconductor Interface for High-Temperature Packaging
  • World's Best Enhancement Mode, Inversion-Type GaN MOSFETs
  • EMI Filter Improvement: Cancellation of Winding Capacitance of Filter Inductor
  • Digital Control
  • Inexpensive, compact, high performance integrated current sensing
  • Sensorless Vector Control of Permanent Magnet Electrical Machines and THALIPEM Demonstration
  • Short-circuit fault tolerant compensation for PMAC machines
  • EMI Cancellation with Balance Technique
  • Active Standard-Cell Integrated Power Electronics Module (SC-IPEM)
  • Axial flux permanent magnet machine with field-weakening capability
  • A complete 3D integration of power supply for non-isolated point-of-load applications extending up to 30 Watts (2006)
  • Medium-Sized Equivalent Circuits for Efficient Modeling of Electro-Thermal Behavior
  • Evaluation of coupled inductor VR (2006)
  • Novel Current-Mode Digital Control Architecture (2006)
  • New Digital Control Architecture (2006)
  • Three Level Buck Converter for High Density POL (2006)
  • An ultra-low profile power supply for non-isolated point-of-load applications (2006)
  • Novel Interleaved Hysteretic Control for VR (2006)
  • High Efficiency Power Architecture (DPA) for Servers (2006)
  • Asymmetrical Interleaving Strategy for Multi-Channel PFC (2006)
  • A Novel Driving Scheme of Synchronous Rectifiers Suitable for LLC Resonant Converters (2006)
  • Negative Capacitance and its Applications in Parasitic Capacitance Cancellation
  • Boost PFC Noise Model and its Applications in Balance PFC
  • DC-to-DC Module for Future Server Power Architecture
  • Investigation of High Frequency and High Efficiency Power Converter Technologies Using Advance Power Semiconductor Device
  • Standard-Cell, Open-Architecture Power Conversion Systems
  • Multidisciplinary Team Effort on High-Temperature Packaging of SiC Power Devices (2006)
• 2005
• • A New Class of EMI Filter IPEMs
  • Integrated Modular Motor Drive (IMMD)
  • Novel Multi-Phase Coupled-Inductor and Current Sensing
  • Axial flux machine using soft magnetic composite materials
  • High-Voltage Front-End DC/DC Converter for DPS (2005)
  • Beat-frequency oscillation in multi-phase converters
  • Integrated Double-Sided Cooling
  • New Digital Control Architecture
  • Integrated magnetics and dielectrics for 100 kHz - 10 MHz EMI filter
  • Maximizing reliability and device utilization via sensing and control of junction temperature in power converters
  • Distributed control architecture for IMMD that coordinates all of the independent phase-leg controllers, providing robust control properties and fault tolerance
  • Multi-ferroic composite serving as a multifunctional substrate for monolithic integration of capacitive and magnetic elements
  • Efficient Heat Extraction by Fluidic Channel Cooling
  • DCR current sensing for coupled inductor VR (2005)
  • High Density Voltage Divider (2005)
  • Predicting Large Beat-Frequency Oscillations (2005)
  • High Resolution DPWM Schemes (Part I) (2005)
  • High Resolution DPWM Schemes (Part II) (2005)
  • Integrated magnetics and dielectrics for EMI filter (2005)
  • Multi-Channel Interleaved PFC (2005)
  • MHz High Efficiency High Power Density LLC Resonant Converters with SR (2005)
  • Cancelling the Equivalent Parallel Capacitance (EPC) of DM Inductors
  • Cancelling the Equivalent Parallel Capacitance (EPC) of CM Inductors
  • Interactions between EMI Filters and Power Interconnects on EMI Filter's Performance
• 2004
• • Augmented Phase-leg Configuration
  • A New Way of Powering Information Technology
  • Nanoscale Die-attach Technology for High-temperature Packaging of Power Devices
  • Multidisciplinary Software Integration - Tools for Power Electronics
  • THALIPEM
  • Powering Information Technology
  • Multi-frequency model and its application on beat-frequency oscillation
  • Resonant Synchronous Rectification (2004)
  • Nanoscale material technology for interconnecting semiconductor devices with high heat dissipation and high temperature capability
  • SiC LC-JBS Rectifier
  • IGBTs and monolithic IGBT/diodes with pilot current sensors, including control techniques for using them to achieve high-performance current regulation in AC motor drives
  • Digital control in power supply applications
  • Twisted core coupled inductor for the microprocessor VR (2004)
  • System Two-stage Power Architecture for Laptop (2004)
  • Light Load Efficiency Enhancement for Laptop (2004)
  • Light Load Efficiency Improvement for Laptop VRs (2004)
  • Proposed Multi-Frequency Model (2004)
  • Solution for efficiency limitation imposed by input decoupling capacitor in non-isolated DC/DC converters (2004)
  • Extraction of Parasitic Parameters Using Scattering Parameters
  • Reduction of the Mutual Couplings between Two Capacitors with Cancellation Turn
  • Cancelling the Equivalent Series Inductance (ESL) of Capacitors
  • Parasitic Cancellation for Two-Stage EMI filters
  • Extraction of the Parasitic Model for Integrated EMI Filters
  • Characterization, Evaluation and Design of Noise Separator for Conducted EMI Diagnosis
  • Nanoscale Silver Paste and Its Low-temperature Sintering for Chip Attachment (2004)
• 2003
• • A New Power Management Architecture for Laptop Computers
  • High-Frequency Brick Type DC/DC Converters
  • New Power Management Architecture for Laptop Computers
  • Modular and hierarchical modeling of electronic power distribution systems for system architecture design and optimization with respect to size, efficiency, and reliability
  • PEBB Technology
  • Digital Generator Control Unit (GCU)
  • Multi-disciplinary software integration for solid body based mechanical, thermal, electromagnetic, and electrical design of power electronics modules and converters
  • ZVS Self-Driven 12V VRM
  • Current Tripler Rectification (CTR) for ultra-high current application
  • Autotransformer Rectifier Units (ATRU)
  • EMI Filter Improvement: Cancellation of Mutual Coupling Between Filter Capacitors
  • Converter design optimization using genetic algorithm
  • 3D Integration Process based on low-temperature co-fired ceramic for realizing integrated power supplies
  • Input-Side Current Sensing Method (2003)
  • CPES Developed Self-Driven ZVS VRM (2003)
  • Single-Stage vs. Two-Stage for 12V VRM (2003)
  • System Two-stage VR for future server microprocessors (2003)
  • Proposed Power Architecture Change (2003)
  • Two-Stage Solution Employed for Laptop (2003)
  • Development of an Integrated DPS Front-End AC/DC Converter (1998-2008)
  • Integrated inductor, capacitor, and transformer (2003)
  • Integration of Front-end AC/DC Converter
  • Modeling Single Layer Boost PFC Inductor
  • Effects of Boost Inductor on DM Noise of PFC
  • Effects of Mutual Couplings on Capacitor's Performance
  • Reduction of the Mutual Couplings between Inductor and Capacitor with Rotated Inductor Winding
  • Effects of Mutual Couplings between Two Capacitors on EMI Filter Performance
  • Advanced High Power Conversion Systems for EMALS/EARS Phase I - State of the Art, Development and Baseline Metrics
  • Design and Optimization of General Purpose Industrial Drives Power Section
• 2002
• • Change in distributed power architecture and eliminating the use of highly customized DC-DC converters
  • Intermediate Bus Converters
  • A New Tool for Reliability Analysis of Designs for Next-Generation Power Electronics Packages
  • Integrated Power Electronics Module (IPEM) (2002)
  • Improved Packaging: Non-Wire Bond Integrated (2002)
  • Separated Source Concept for High Efficiency Buck (2002)
  • Self-driven ZVS FB Converter 48V DC-DC Applications (2002)
  • Current Tripler (2002)
  • Two-Stage Solution For Intel Itanium Processor (2002)
  • Impact to Telecommunication Industries
• 2001
• • Integrated inductor, capacitor, and transformer for resonant power supply
  • Single phase motor drive with reduced switch count
  • Critical Inductance and Critical Bandwidth (2001)
  • High Efficiency 12V VRs with Extended Duty Cycle Concept (2001)
  • High Efficiency Solutions for 48V Powerpod (2001)
• 2000
• • Commercialization of Integrated Power Electronics Modules
  • Embedded Power technology for fabricating modules integrating switching devices, sensors, gate drivers, and passives for motor drive
  • Universal Controller
• 1999
• • Metal-Post-Interconnect-Parallel-Plate-Structure (MPIPPS) (1999)
  • Coupled inductor as the non-linear inductor through switching network (1999)
  • Coupled inductors improving the performance of the microprocessor VR (1999)
• 1998
• • Current Sensing Method by RC Network (1998)
  • CPES Proposed Coupled Inductor (1998)
  • CPES Proposed Multi-Phase Buck
  • Advanced Power Module Packaging (1998)
  • Current Sensing Technique for Multiphase Converters
  • Every Intel processor is powered with CPES Multi-Phase VRM (since 1998)
• 1997
• • CPES 4-Phase VRM (1997)
  • Integration of Controllers (1997)
  • Commercialization of VRM Controllers (since 1997)
  • Integrated Power Electronics Module (IPEM) (1997)
  • Multiphase Voltage Regulator Module
  • Lateral Power IC for Monolithic integration (1997)