Abstract:
This paper presents a fully integrated VCO-based switched-capacitor (SC) DC-DC converter in 65 nm CMOS. We propose two transient-enhancement techniques: segmented frequen...Show MoreMetadata
Abstract:
This paper presents a fully integrated VCO-based switched-capacitor (SC) DC-DC converter in 65 nm CMOS. We propose two transient-enhancement techniques: segmented frequency modulation (SFM) and multiphase co-work control (MCW) to reduce the latency of the VCO-based control loop and shorten the SC DC-DC converter response time. We design a 15-phase interleaved converter to support an output voltage of 1 V from a 2.4 V input supply, delivering up to 138 mA of load current, which takes only 25/29 ns for output voltage recovering to the steady state from heavy-to-light/light-to-heavy load transients, respectively. It obtains a peak efficiency of 82.8 % and keeps the efficiency above 80 % from 31 mA to the maximum load current. The SC DC-DC converter chip occupies 0.61 mm2, and its output power density is 240 mW/mm2.
Published in: 2018 IEEE Asian Solid-State Circuits Conference (A-SSCC)
Date of Conference: 05-07 November 2018
Date Added to IEEE Xplore: 16 December 2018
ISBN Information:
State Key Laboratory of Analog and Mixed-Signal VLSI
State Key Laboratory of Analog and Mixed-Signal VLSI
Dept. of ECE, Faculty of Science and Technology, University of Macau, Macao, China
State Key Laboratory of Analog and Mixed-Signal VLSI
State Key Laboratory of Analog and Mixed-Signal VLSI
Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy
Dept. of ECE, Faculty of Science and Technology, University of Macau, Macao, China
Contents State Key Laboratory of Analog and Mixed-Signal VLSI
State Key Laboratory of Analog and Mixed-Signal VLSI
Dept. of ECE, Faculty of Science and Technology, University of Macau, Macao, China
State Key Laboratory of Analog and Mixed-Signal VLSI
State Key Laboratory of Analog and Mixed-Signal VLSI
Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy
Dept. of ECE, Faculty of Science and Technology, University of Macau, Macao, China
