UM
An Integrated DC-DC Converter with Segmented Frequency Modulation and Multiphase Co-Work Control for Fast Transient Recovery
Chio U.-F.1; Wen K.-C.1; Sin S.-W.4; Lam C.-S.1; Lu Y.1; Maloberti F.3; Martins R.P.4
2018-12-14
Source Publication2018 IEEE Asian Solid-State Circuits Conference, A-SSCC 2018 - Proceedings
Pages31-32
AbstractThis 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 mm, and its output power density is 240 mW/mm.
Keywordfully integrated SC DC-DC converter switched-capacitor voltage-controlled oscillator (VCO)
DOI10.1109/ASSCC.2018.8579295
URLView the original
Language英語
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Document TypeConference paper
CollectionUniversity of Macau
Affiliation1.State Key Laboratory of Analog and Mixed-Signal VLSI
2.Instituto Superior Técnico
3.Università degli Studi di Pavia
4.Universidade de Macau
Recommended Citation
GB/T 7714
Chio U.-F.,Wen K.-C.,Sin S.-W.,et al. An Integrated DC-DC Converter with Segmented Frequency Modulation and Multiphase Co-Work Control for Fast Transient Recovery[C],2018:31-32.
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