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Krishnan Ravichandran
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- affiliation: Intel Corporation, Chandler, AZ, USA
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2020 – today
- 2024
- [j17]Nicolas Butzen, Harish K. Krishnamurthy, Jingshu Yu, Khondker Zakir Ahmed, Sheldon Weng, Krishnan Ravichandran, Ramez Hosseinian Ahangharnejhad, James Waldemer, Christopher Pelto, James W. Tschanz:
A Monolithic 12.7 W/mm2, 92% Peak-Efficiency Switched-Capacitor DC-DC Converter Using CSCR-First Topology. IEEE J. Solid State Circuits 59(12): 4114-4123 (2024) - [c30]Suhwan Kim, Harish K. Krishnamurthy, Zakir Ahmed, Nachiket V. Desai, Sheldon Weng, Anne Augustine, Huong T. Do, Jingshu Yu, Phong D. Bach, Xiaosen Liu, Kaladhar Radhakrishnan, Krishnan Ravichandran, James W. Tschanz, Vivek De:
14.9 A Monolithic 10.5W/mm2600 MHz Top-Metal and C4 Planar Spiral Inductor-Based Integrated Buck Voltage Regulator on 16nm-Class CMOS. ISSCC 2024: 270-272 - [c29]Nicolas Butzen, Harish Krishnamurthy, Jingshu Yu, Khondker Zakir Ahmed, Sheldon Weng, Krishnan Ravichandran, Ramez Hosseinian Ahangharnejhad, James Waldemer, Chris Pelto, James W. Tschanz:
28.4 A Monolithic 12.7W/mm2 Pmax, 92% Peak-Efficiency CSCR-First Switched-Capacitor DC-DC Converter. ISSCC 2024: 462-464 - [c28]Sally Amin, Harish Krishnamurthy, Huong Do, Claudio Alvarez, Mike Hill, Kaladhar Radhakrishnan, Vivek De, Sheldon Weng, Krishnan Ravichandran, Jim Tschanz, Wilfred Gomes, Jonathan Douglas:
A 5.4V-Vin, 9.3A/mm2 10MHz Buck IVR Chiplet in 55nm BCD Featuring Self-Timed Bootstrap and Same-Cycle ZVS Control. VLSI Technology and Circuits 2024: 1-2 - [c27]Jingshu Yu, Xiaosen Liu, Minxiang Gong, Nicolas Butzen, Sheldon Weng, Harish K. Krishnamurthy, Krishnan Ravichandran, Ramez Hosseinian Ahangharnejhad, Waldemer Jim, Christopher Pelto, James W. Tschanz, Vivek De:
A Monolithic 5.7A/mm2 91% Peak Efficiency Scalable Multi-Stage Modular Switched Capacitor Voltage Regulator with Self-Timed Deadtime and Safe Startup for 3D-ICs. VLSI Technology and Circuits 2024: 1-2 - 2023
- [c26]Suhwan Kim, Harish K. Krishnamurthy, Sergey Sofer, Sheldon Weng, Shahar Wolf, Ashoke Ravi, Krishnan Ravichandran, Ofir Degani, James W. Tschanz, Vivek De:
A 1.8W High-Frequency SIMO Converter Featuring Digital Sensor-Less Computational Zero-Current Operation and Non-Linear Duty-Boost. ISSCC 2023: 186-187 - [c25]Nicolas Butzen, Harish Krishnamurthy, Zakir Ahmed, Sheldon Weng, Krishnan Ravichandran, Michael Zelikson, James W. Tschanz, Jonathan Douglas:
A Monolithic 26A/mm2Imax, 88.5% Peak-Efficiency Continuously Scalable Conversion-Ratio Switched-Capacitor DC-DC Converter. ISSCC 2023: 232-233 - 2022
- [j16]Nachiket V. Desai
, Han Wui Then
A 32-A, 5-V-Input, 94.2% Peak Efficiency High-Frequency Power Converter Module Featuring Package-Integrated Low-Voltage GaN nMOS Power Transistors. IEEE J. Solid State Circuits 57(4): 1090-1099 (2022) - [c24]Xiaosen Liu, Harish Krishnamurthy, Renzhi Liu, Krishnan Ravichandran, Zakir Ahmed, Nachiket V. Desai, Nicolas Butzen, James W. Tschanz, Vivek De:
A 0.76V Vin Triode Region 4A Analog LDO with Distributed Gain Enhancement and Dynamic Load-Current Tracking in Intel 4 CMOS Featuring Active Feedforward Ripple Shaping and On-Chip Power Noise Analyzer. ISSCC 2022: 478-480 - [c23]Nachiket V. Desai, Harish K. Krishnamurthy, Suhwan Kim, Christopher Schaef, Sheldon Weng, Beomseok Choi, William J. Lambert, Krishnan Ravichandran, James W. Tschanz, Vivek De:
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. VLSI Technology and Circuits 2022: 192-193 - 2021
- [j15]Raghavan Kumar
A Time-/Frequency-Domain Side-Channel Attack Resistant AES-128 and RSA-4K Crypto-Processor in 14-nm CMOS. IEEE J. Solid State Circuits 56(4): 1141-1151 (2021) - [j14]Xiaosen Liu
A Universal Modular Hybrid LDO With Fast Load Transient Response and Programmable PSRR in 14-nm CMOS Featuring Dynamic Clamp Strength Tuning. IEEE J. Solid State Circuits 56(8): 2402-2415 (2021) - [c22]Nachiket V. Desai, Harish K. Krishnamurthy, Khondker Zakir Ahmed, Sheldon Weng, Suhwan Kim, Xiaosen Liu, Huong Do, Kaladhar Radhakrishnan, Krishnan Ravichandran, James W. Tschanz, Vivek De:
Peak-Current-Controlled Ganged Integrated High-Frequency Buck Voltage Regulators in 22nm CMOS for Robust Cross-Tile Current Sharing. ISSCC 2021: 262-264 - [c21]Khondker Zakir Ahmed, Nachiket V. Desai, Harish K. Krishnamurthy, Sheldon Weng, Xiaosen Liu, Krishnan Ravichandran, James W. Tschanz, Vivek De:
A Dual-Input, Digital Hybrid Buck-LDO System Featuring Fast Load Transient Response, Zero-Wire Current Handover & Input PDN Resonance Reduction. VLSI Circuits 2021: 1-2 - [c20]Nachiket V. Desai, Harish K. Krishnamurthy, William J. Lambert, Jingshu Yu, Han Wui Then
A 32A 5V-Input, 94.2% Peak Efficiency High-Frequency Power Converter Module Featuring Package-Integrated Low-Voltage GaN NMOS Power Transistors. VLSI Circuits 2021: 1-2 - [c19]Suhwan Kim, Harish Krishnamurthy, Sally Amin, Sheldon Weng, Jin Feng, Huong Do, Kaladhar Radhakrishnan, Krishnan Ravichandran, James W. Tschanz, Vivek De:
A 1S Direct-Battery-Attach Integrated Buck Voltage Regulator with 5-Stack Thin-Gate 22nm FinFET CMOS Featuring Active Voltage Balancing and Cascaded Self-Turn-ON Drivers. VLSI Circuits 2021: 1-2 - 2020
- [j13]Khondker Zakir Ahmed
A Variation-Adaptive Integrated Computational Digital LDO in 22-nm CMOS With Fast Transient Response. IEEE J. Solid State Circuits 55(4): 977-987 (2020) - [c18]Harish K. Krishnamurthy, Khondker Zakir Ahmed, Xiaosen Liu, Nachiket V. Desai, Suhwan Kim, Nicolas Butzen, Sally Amin, Sheldon Weng, Krishnan Ravichandran, James W. Tschanz, Vivek De:
Digital Control of Switching and Linear Integrated Voltage Regulators. CICC 2020: 1-4 - [c17]Dileep Kurian, Tanay Karnik, Saksham Soni, Saransh Chhabra, Suhwan Kim, Jaykant Timbadiya, Ankit Gupta, Krishnan Ravichandran, Mukesh Bhartiya, Angela Nicoara:
Self-Powered IOT System for Edge Inference. ISQED 2020: 302-305 - [c16]Zakir Zakir Ahmed, Harish K. Krishnamurthy, Sheldon Weng, Xiaosen Liu, Christopher Schaef, Nachiket V. Desai, Krishnan Ravichandran, James W. Tschanz, Vivek De:
An Autonomous Reconfigurable Power Delivery Network (RPDN) for Many-Core SoCs Featuring Dynamic Current Steering. VLSI Circuits 2020: 1-2 - [c15]Raghavan Kumar, Xiaosen Liu, Vikram B. Suresh, Harish Krishnamurthy, Mark A. Anders, Himanshu Kaul, Krishnan Ravichandran, Vivek De, Sanu Mathew:
A SCA-Resistant AES Engine in 14nm CMOS with Time/Frequency-Domain Leakage Suppression using Non-Linear Digital LDO Cascaded with Arithmetic Countermeasures. VLSI Circuits 2020: 1-2 - [c14]Xiaosen Liu, Harish K. Krishnamurthy, Claudia P. Barrera, Jing Han, Rajasekhara M. Narayana Bhatla, Scott Chiu, Khondker Zakir Ahmed, Krishnan Ravichandran, James W. Tschanz, Vivek De:
A Dual-Rail Hybrid Analog/Digital LDO with Dynamic Current Steering for Tunable High PSRR and High Efficiency. VLSI Circuits 2020: 1-2
2010 – 2019
- 2019
- [j12]Pascal Andreas Meinerzhagen
An Energy-Efficient Graphics Processor in 14-nm Tri-Gate CMOS Featuring Integrated Voltage Regulators for Fine-Grain DVFS, Retentive Sleep, and ${V}_{\text{MIN}}$ Optimization. IEEE J. Solid State Circuits 54(1): 144-157 (2019) - [j11]Christopher Schaef
A Light-Load Efficient Fully Integrated Voltage Regulator in 14-nm CMOS With 2.5-nH Package-Embedded Air-Core Inductors. IEEE J. Solid State Circuits 54(12): 3316-3325 (2019) - [c13]Christopher Schaef, Sheldon Weng, Beomseok Choi, William J. Lambert, Kaladhar Radhakrishnan, Krishnan Ravichandran, James W. Tschanz, Vivek De:
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. ISSCC 2019: 146-148 - [c12]Christopher Schaef, Nachiket V. Desai, Harish Krishnamurthy, Sheldon Weng, Huong Do, William J. Lambert, Kaladhar Radhakrishnan, Krishnan Ravichandran, James W. Tschanz, Vivek De:
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. ISSCC 2019: 154-156 - [c11]Xiaosen Liu, Harish K. Krishnamurthy, Taesik Na, Sheldon Weng, Khondker Z. Ahmed, Krishnan Ravichandran, James W. Tschanz, Vivek De:
A Modular Hybrid LDO with Fast Load-Transient Response and Programmable PSRR in 14nm CMOS Featuring Dynamic Clamp Tuning and Time-Constant Compensation. ISSCC 2019: 234-236 - [c10]Khondker Zakir Ahmed, Harish K. Krishnamurthy, Charles Augustine, Xiaosen Liu, Sheldon Weng, Krishnan Ravichandran, James W. Tschanz, Vivek De:
A Variation-Adaptive Integrated Computational Digital LDO in 22nm CMOS with Fast Transient Response. VLSI Circuits 2019: 124- - 2018
- [j10]Harish Kumar Krishnamurthy
A Digitally Controlled Fully Integrated Voltage Regulator With On-Die Solenoid Inductor With Planar Magnetic Core in 14-nm Tri-Gate CMOS. IEEE J. Solid State Circuits 53(1): 8-19 (2018) - [j9]Harish Kumar Krishnamurthy
A Digitally Controlled Fully Integrated Voltage Regulator With 3-D-TSV-Based On-Die Solenoid Inductor With a Planar Magnetic Core for 3-D-Stacked Die Applications in 14-nm Tri-Gate CMOS. IEEE J. Solid State Circuits 53(4): 1038-1048 (2018) - [j8]Xiaosen Liu
A Switched Capacitor Energy Harvester Based on a Single-Cycle Criterion for MPPT to Eliminate Storage Capacitor. IEEE Trans. Circuits Syst. I Regul. Pap. 65-I(2): 793-803 (2018) - [j7]Mohamed Abouzied
An Integrated Concurrent Multiple-Input Self-Startup Energy Harvesting Capacitive-Based DC Adder Combiner. IEEE Trans. Ind. Electron. 65(8): 6281-6290 (2018) - [c9]Chao-Jen Huang, Yao-Sheng Ma, Wen-Hau Yang, Yen-Ting Lin, Chun-Chieh Kuo, Ke-Horng Chen
A 99.2% Tracking Accuracy Single-Inductor Quadruple-Input-Quadruple-Output Buck-Boost Converter Topology with Periodical Interval Perturbation and Observation MPPT. A-SSCC 2018: 171-174 - [c8]Pascal Meinerzhagen, Carlos Tokunaga
An energy-efficient graphics processor featuring fine-grain DVFS with integrated voltage regulators, execution-unit turbo, and retentive sleep in 14nm tri-gate CMOS. ISSCC 2018: 38-40 - [c7]Suhwan Kim, Vaibhav A. Vaidya, Christopher Schaef, Andrew Lines, Harish Krishnamurthy, Sheldon Weng, Xiaosen Liu, Dileep Kurian, Tanay Karnik, Krishnan Ravichandran, James W. Tschanz, Vivek De:
A Single-Stage, Single-Inductor, 6-Input 9-Output Multi-Modal Energy Harvesting Power Management IC for 100µW-120MW Battery-Powered IoT Edge Nodes. VLSI Circuits 2018: 195-196 - 2017
- [j6]Minki Cho
Postsilicon Voltage Guard-Band Reduction in a 22 nm Graphics Execution Core Using Adaptive Voltage Scaling and Dynamic Power Gating. IEEE J. Solid State Circuits 52(1): 50-63 (2017) - [j5]Mohamed Abouzied
A Fully Integrated Reconfigurable Self-Startup RF Energy-Harvesting System With Storage Capability. IEEE J. Solid State Circuits 52(3): 704-719 (2017) - [c6]Harish Kumar Krishnamurthy, Vaibhav A. Vaidya, Sheldon Weng, Krishnan Ravichandran, Pavan Kumar, Stephen T. Kim, Rinkle Jain, George E. Matthew, Jim Tschanz, Vivek De:
20.1 A digitally controlled fully integrated voltage regulator with on-die solenoid inductor with planar magnetic core in 14nm tri-gate CMOS. ISSCC 2017: 336-337 - 2016
- [j4]Stephen T. Kim, Yi-Chun Shih, Kaushik Mazumdar, Rinkle Jain, Joseph F. Ryan, Carlos Tokunaga
Enabling Wide Autonomous DVFS in a 22 nm Graphics Execution Core Using a Digitally Controlled Fully Integrated Voltage Regulator. IEEE J. Solid State Circuits 51(1): 18-30 (2016) - [j3]Xiaosen Liu, Lilly Huang, Krishnan Ravichandran, Edgar Sánchez-Sinencio:
A Highly Efficient Reconfigurable Charge Pump Energy Harvester With Wide Harvesting Range and Two-Dimensional MPPT for Internet of Things. IEEE J. Solid State Circuits 51(5): 1302-1312 (2016) - [j2]Suvankar Biswas, Lilly Huang, Vaibhav A. Vaidya, Krishnan Ravichandran, Ned Mohan, Sairaj V. Dhople:
Universal Current-Mode Control Schemes to Charge Li-Ion Batteries Under DC/PV Source. IEEE Trans. Circuits Syst. I Regul. Pap. 63-I(9): 1531-1542 (2016) - [c5]Minki Cho, Stephen T. Kim, Carlos Tokunaga
8.4 Post-silicon voltage-guard-band reduction in a 22nm graphics execution core using adaptive voltage scaling and dynamic power gating. ISSCC 2016: 152-153 - 2015
- [j1]Rinkle Jain, Stephen T. Kim, Vaibhav A. Vaidya, Krishnan Ravichandran, James W. Tschanz, Vivek De:
Conductance Modulation Techniques in Switched-Capacitor DC-DC Converter for Maximum-Efficiency Tracking and Ripple Mitigation in 22 nm Tri-Gate CMOS. IEEE J. Solid State Circuits 50(8): 1809-1819 (2015) - [c4]Pavan Kumar, Vaibhav A. Vaidya, Harish Krishnamurthy, Stephen T. Kim, George E. Matthew, Sheldon Weng, Bharani Thiruvengadam, Wayne Proefrock, Krishnan Ravichandran, Vivek De:
A 0.4V∼1V 0.2A/mm2 70% efficient 500MHz fully integrated digitally controlled 3-level buck voltage regulator with on-die high density MIM capacitor in 22nm tri-gate CMOS. CICC 2015: 1-4 - [c3]Stephen T. Kim, Yi-Chun Shih, Kaushik Mazumdar, Rinkle Jain, Joseph F. Ryan, Carlos Tokunaga
8.6 Enabling wide autonomous DVFS in a 22nm graphics execution core using a digitally controlled hybrid LDO/switched-capacitor VR with fast droop mitigation. ISSCC 2015: 1-3 - 2014
- [c2]Rinkle Jain, Stephen T. Kim, Vaibhav A. Vaidya, James W. Tschanz, Krishnan Ravichandran, Vivek De:
Conductance modulation techniques in switched-capacitor DC-DC converter for maximum-efficiency tracking and ripple mitigation in 22nm Tri-gate CMOS. CICC 2014: 1-4 - [c1]Harish Krishnamurthy, Vaibhav A. Vaidya, Pavan Kumar, George E. Matthew, Sheldon Weng, Bharani Thiruvengadam, Wayne Proefrock, Krishnan Ravichandran, Vivek De:
A 500 MHz, 68% efficient, fully on-die digitally controlled buck Voltage Regulator on 22nm Tri-Gate CMOS. VLSIC 2014: 1-2
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