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Paper Abstract and Keywords
Presentation 2018-01-25 13:00
Examination of Multi-phase Ripple-based Converter with Constant On-Time Control
Yi Xiong, Koyo Asaishi, Natsuko Miki, Yifei Sun, Nobukazu Tsukiji, Yasunori Kobori, Haruo Kobayashi (Gunma Univ.) CAS2017-113 ICTSSL2017-40
Abstract (in Japanese) (See Japanese page) 
(in English) We investigated multiphase buck converter in ripple control DC - DC power supply with constant on - time (COT) control by simulation. In the ripple control power supply, since there is no fixed clock inside due to the fluctuating cycle, the period is detected by the peak hold voltage based on a saw-tooth wave circuit. As a four-phase system, by quartering the peak voltage and comparing them with the saw-tooth wave, a set of four-phase PWMs is generated to obtain stable current balance
and excellent response characteristics. Compared to single phase converter, low output ripple and fast transient response are shown. As a result, the output voltage ripple was greatly reduced and the supply of large output current was confirmed. Moreover, we confirmed the element sensitivity of the current balance, it turned out that the sensitivity of the on time error of the main control PWM signal was high and the influence of the other element variation was small.
Keyword (in Japanese) (See Japanese page) 
(in English) ripple control converter / COT / clock-less converter / four-phase control / current balance / element sensitivity / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 400, CAS2017-113, pp. 23-27, Jan. 2018.
Paper # CAS2017-113 
Date of Issue 2018-01-18 (CAS, ICTSSL) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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Conference Information
Committee ICTSSL CAS  
Conference Date 2018-01-25 - 2018-01-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Student Session, etc. 
Paper Information
Registration To CAS 
Conference Code 2018-01-ICTSSL-CAS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Examination of Multi-phase Ripple-based Converter with Constant On-Time Control 
Sub Title (in English)  
Keyword(1) ripple control converter  
Keyword(2) COT  
Keyword(3) clock-less converter  
Keyword(4) four-phase control  
Keyword(5) current balance  
Keyword(6) element sensitivity  
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Keyword(8)  
1st Author's Name Yi Xiong  
1st Author's Affiliation Gunma University (Gunma Univ.)
2nd Author's Name Koyo Asaishi  
2nd Author's Affiliation Gunma University (Gunma Univ.)
3rd Author's Name Natsuko Miki  
3rd Author's Affiliation Gunma University (Gunma Univ.)
4th Author's Name Yifei Sun  
4th Author's Affiliation Gunma University (Gunma Univ.)
5th Author's Name Nobukazu Tsukiji  
5th Author's Affiliation Gunma University (Gunma Univ.)
6th Author's Name Yasunori Kobori  
6th Author's Affiliation Gunma University (Gunma Univ.)
7th Author's Name Haruo Kobayashi  
7th Author's Affiliation Gunma University (Gunma Univ.)
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Speaker Author-1 
Date Time 2018-01-25 13:00:00 
Presentation Time 20 minutes 
Registration for CAS 
Paper # CAS2017-113, ICTSSL2017-40 
Volume (vol) vol.117 
Number (no) no.400(CAS), no.401(ICTSSL) 
Page pp.23-27 
#Pages
Date of Issue 2018-01-18 (CAS, ICTSSL) 


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