Presentation 2019-05-16
Digital Control of LLC Converter
Hironori Takemoto, Terukazu Sato,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In this research, the sufficient resolution of frequency and AD conversion of the micro control unit that is used in the digitally controlled LLC converter is discussed, and furthermore the appropriate value of the cutoff frequency is verified in the RC filter of the feedback circuits. Experiments were conducted for the 48V to 24V(5A) prototype converter. As a result, it is found that the frequency resolution of the MCU needs more than 2.14ns and AD conversion resolution needs more than 6.6bit. Moreover it is found that the cutoff frequency needs less than about 1/10 of the switching frequency.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) LLC converter / digital control / MCU / frequency resolution / AD conversion / cutoff frequency
Paper # EE2019-1
Date of Issue 2019-05-09 (EE)

Conference Information
Committee EE / IEE-HCA
Conference Date 2019/5/16(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Kikai-Shinko-Kaikan Bldg.
Topics (in Japanese) (See Japanese page)
Topics (in English) Switching power supply, New industrial and home appliance for power, others
Chair Tadatoshi Babasaki(NTT Facilities)
Vice Chair Keiichi Hirose(NTT Facilities) / Tadashi Suetsugu(Fukuoka Univ.)
Secretary Keiichi Hirose(Sojo Univ.) / Tadashi Suetsugu(Nagasaki Inst. of Applied Science)
Assistant Takashi Matsushita(NTT-F) / Tetsuya Oshikata(ShinDengen) / Yuu Yonezawa(Fujitsu Lab.)

Paper Information
Registration To Technical Committee on Energy Engineering in Electronics and Communications / Technical Meeting on Home and Consumer Appliances
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Digital Control of LLC Converter
Sub Title (in English) Consideration of Frequency Resolution and AD Conversion Resolution
Keyword(1) LLC converter
Keyword(2) digital control
Keyword(3) MCU
Keyword(4) frequency resolution
Keyword(5) AD conversion
Keyword(6) cutoff frequency
1st Author's Name Hironori Takemoto
1st Author's Affiliation Oita University(Oita Univ.)
2nd Author's Name Terukazu Sato
2nd Author's Affiliation Oita University(Oita Univ.)
Date 2019-05-16
Paper # EE2019-1
Volume (vol) vol.119
Number (no) EE-32
Page pp.pp.1-5(EE),
#Pages 5
Date of Issue 2019-05-09 (EE)