20.2 A variable-conversion-ratio 3-phase resonant switched capacitor converter with 85% efficiency at 0.91W/mm2 using 1.1nH PCB-trace inductors. - Christopher Schaef; Kapil Kesarwani; Jason T. Stauth (ISSCC, 2015)

A 3-Phase Resonant Switched Capacitor Converter Delivering 7.7 W at 85% Efficiency Using 1.1 nH PCB Trace Inductors. - Christopher Schaef; Jason T. Stauth (IEEE J. Solid State Circuits, 2015)

10.2 A digitally controlled 94.8%-peak-efficiency hybrid switched-capacitor converter for bidirectional balancing and impedance-based diagnostics of lithium-ion battery arrays. - Christopher Schaef; Eric Din; Jason T. Stauth (ISSCC, 2017)

A Hybrid Switched-Capacitor Battery Management IC With Embedded Diagnostics for Series-Stacked Li-Ion Arrays. - Christopher Schaef; Eric Din; Jason T. Stauth (IEEE J. Solid State Circuits, 2017)

A Single-Stage, Single-Inductor, 6-Input 9-Output Multi-Modal Energy Harvesting Power Management IC for 100µW-120MW Battery-Powered IoT Edge Nodes. - Suhwan Kim 002; Vaibhav A. Vaidya; Christopher Schaef; Andrew Lines; Harish Krishnamurthy; Sheldon Weng; Xiaosen Liu; Dileep Kurian; Tanay Karnik; Krishnan Ravichandran; James W. Tschanz; Vivek De (VLSI Circuits, 2018)

An Analog Front End ASIC for Cardiac Electrical Impedance Tomography. - Arun Rao; Yueh-Ching Teng; Chris Schaef; Ethan K. Murphy; Saaid H. Arshad; Ryan J. Halter; Kofi Odame (IEEE Trans. Biomed. Circuits Syst., 2018)

A Fully Integrated Voltage Regulator in 14nm CMOS with Package-Embedded Air-Core Inductor Featuring Self-Trimmed, Digitally Controlled Variable On-Time Discontinuous Conduction Mode Operation. - Christopher Schaef; Nachiket V. Desai; Harish Krishnamurthy; Sheldon Weng; Huong T. Do; William J. Lambert; Kaladhar Radhakrishnan; Krishnan Ravichandran; James W. Tschanz; Vivek De (ISSCC, 2019)

A 93.8% Peak Efficiency, 5V-Input, 10A Max ILOAD Flying Capacitor Multilevel Converter in 22nm CMOS Featuring Wide Output Voltage Range and Flying Capacitor Precharging. - Christopher Schaef; Sheldon Weng; Beomseok Choi; William J. Lambert; Kaladhar Radhakrishnan; Krishnan Ravichandran; James W. Tschanz; Vivek De (ISSCC, 2019)

A Light-Load Efficient Fully Integrated Voltage Regulator in 14-nm CMOS With 2.5-nH Package-Embedded Air-Core Inductors. - Christopher Schaef; Kaladhar Radhakrishnan; Krishnan Ravichandran; James W. Tschanz; Vivek De; Nachiket V. Desai; Harish K. Krishnamurthy; Xiaosen Liu; Khondker Zakir Ahmed 001; Suhwan Kim 002; Sheldon Weng; Huong T. Do; et al. (IEEE J. Solid State Circuits, 2019)

An Autonomous Reconfigurable Power Delivery Network (RPDN) for Many-Core SoCs Featuring Dynamic Current Steering. - Zakir K. Ahmed 001; Harish K. Krishnamurthy; Sheldon Weng; Xiaosen Liu; Christopher Schaef; Nachiket V. Desai; Krishnan Ravichandran; James W. Tschanz; Vivek De (VLSI Circuits, 2020)

A 32A 5V-Input, 94.2% Peak Efficiency High-Frequency Power Converter Module Featuring Package-Integrated Low-Voltage GaN NMOS Power Transistors. - Nachiket V. Desai; Harish K. Krishnamurthy; William J. Lambert; Jingshu Yu; Han Wui Then; Nicolas Butzen; Sheldon Weng; Christopher Schaef; N. Nidhi; Marko Radosavljevic; Johann Rode; Justin Sandford; et al. (VLSI Circuits, 2021)

A Universal Modular Hybrid LDO With Fast Load Transient Response and Programmable PSRR in 14-nm CMOS Featuring Dynamic Clamp Strength Tuning. - Xiaosen Liu; Harish K. Krishnamurthy; Taesik Na; Sheldon Weng; Khondker Zakir Ahmed 001; Christopher Schaef; Krishnan Ravichandran; James W. Tschanz; Vivek De (IEEE J. Solid State Circuits, 2021)

A IMax |max, Fully Integrated Multi-Phase Voltage Regulator with 91.5% Peak Efficiency at 1.8 to 1V, Operating at 50MHz and Featuring a Digitally Assisted Controller with Automatic Phase Shedding and Soft Switching in 4nm Class FinFET CMOS. - Christopher Schaef; Tamir Salus; Rachid Rayess; Siddarth Kulasekaran; Mat Manusharow; Kaladhar Radhakrishnan; Jonathan Douglas (ISSCC, 2022)

Fully Integrated Voltage Regulators with Package-Embedded Inductors for Heterogeneous 3D-TSV-Stacked System-in-Package with 22nm CMOS Active Silicon Interposer Featuring Self-Trimmed, Digitally Controlled ON-Time Discontinuous Conduction Mode (DCM) Operation. - Nachiket V. Desai; Harish K. Krishnamurthy; Suhwan Kim 002; Christopher Schaef; Sheldon Weng; Beomseok Choi; William J. Lambert; Krishnan Ravichandran; James W. Tschanz; Vivek De (VLSI Technology and Circuits, 2022)

A 32-A, 5-V-Input, 94.2% Peak Efficiency High-Frequency Power Converter Module Featuring Package-Integrated Low-Voltage GaN nMOS Power Transistors. - Nachiket V. Desai; Han Wui Then; Jingshu Yu; Harish K. Krishnamurthy; William J. Lambert; Nicolas Butzen; Sheldon Weng; Christopher Schaef; Kaladhar Radhakrishnan; Krishnan Ravichandran; James W. Tschanz; Vivek De (IEEE J. Solid State Circuits, 2022)

28.6 An 87% Efficient 2V-Input, 200A Voltage Regulator Chiplet Enabling Vertical Power Delivery in Multi-kW Systems-on-Package. - Rinkle Jain; Shunjiang Xu; Rajiv Kaushal; Carlos Mariscal; Humberto Caballero; Tamir Salus; Christopher Schaef; Anup Deka; Aruna Payala; Keng Chen; Huong T. Do; Jonathan Douglas (ISSCC, 2024)

21.5 A Fully Integrated Multi-Phase Voltage Regulator with Enhanced Light-Load-Efficiency Peak of 86%, Featuring an Autonomous Mode Transition from Hard-Switching to Soft-Switching to Discontinuous Conduction Mode in 3nm FinFET CMOS. - Kishan Joshi; Avinash Shreepathi Bhat; Christopher Schaef; Keng Chen; Edward Lee; Yura Kocharyan; Ajay Janardanan; Dinesh Ganta; Huanhuan Zhang; Maximilian Geppert; Prescott McLaughlin; Arvind Raghavan; et al. (ISSCC, 2025)