A integrated dc-dc converter with segmented frequency modulation and multiphase co-work control for fast transient recovery

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	A integrated dc-dc converter with segmented frequency modulation and multiphase co-work control for fast transient recovery
	Chio, U F.; Wen, K. C.; Sin, S. W.; Lam, C. S.; Lu, Y.; Maloberti, F.; Martins, R. P.
	2018-11-05
Source Publication	2018 IEEE Asian Solid-State Circuits Conference (A-SSCC)
Pages	31-32
Publication Place	Tainan, Taiwan
Publisher	IEEE
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.
Keyword	SC DC-DC converter fully integrated switched-capacitor voltage-controlled oscillator (VCO)
URL	View the original
Language	英語English
The Source to Article	PB_Publication
PUB ID	39382
Document Type	Conference paper
Collection	DEPARTMENT OF PUBLIC HEALTH AND MEDICINAL ADMINISTRATION
Corresponding Author	Sin, S. W.
Recommended Citation GB/T 7714	Chio, U F.,Wen, K. C.,Sin, S. W.,et al. A integrated dc-dc converter with segmented frequency modulation and multiphase co-work control for fast transient recovery[C], Tainan, Taiwan:IEEE, 2018, 31-32.
APA	Chio, U F.., Wen, K. C.., Sin, S. W.., Lam, C. S.., Lu, Y.., Maloberti, F.., & Martins, R. P. (2018). A integrated dc-dc converter with segmented frequency modulation and multiphase co-work control for fast transient recovery. 2018 IEEE Asian Solid-State Circuits Conference (A-SSCC), 31-32.

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