Presentation 2012-09-21
[Invited lecture] Fully digital voltage-mode control based on predictive hysteresis method (FDVC-PH) for C-DC converters
Ming LIU, Tatsuo NAKAGAWA, Kenichi OSADA,
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Abstract(in English) A new control method called "fully digital voltage-mode control based on predictive hysteresis method" (FDVC-PH) for DC-DC converters was developed. FDVC-PH method achieves low output ripple voltage by canceling the delay time caused by a digital control system. Moreover, to cancel the delay time completely, a technique for determining the required predictive time by analyzing predictive operation in frequency domain is proposed. To verify the effectiveness of FDVC-PH method, a buck converter was experimentally implemented on a DSP microprocessor. The output ripple voltage of the converter is reduced by 68% with FDVC-PH method compared to that with a non-predictive hysteresis method. Moreover, the power consumption of a digital control system using FDVC-PH method is reduced by 23% compared to that of a system using conventional digital current-mode control.
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Keyword(in English) digital control / voltage-mode control / predictive hysteresis method
Paper # CAS2012-44,NLP2012-70
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Conference Information
Committee NLP
Conference Date 2012/9/13(1days)
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Registration To Nonlinear Problems (NLP)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) [Invited lecture] Fully digital voltage-mode control based on predictive hysteresis method (FDVC-PH) for C-DC converters
Sub Title (in English)
Keyword(1) digital control
Keyword(2) voltage-mode control
Keyword(3) predictive hysteresis method
1st Author's Name Ming LIU
1st Author's Affiliation Hitachi Ltd. Central Research Laboratory()
2nd Author's Name Tatsuo NAKAGAWA
2nd Author's Affiliation Hitachi Ltd. Central Research Laboratory
3rd Author's Name Kenichi OSADA
3rd Author's Affiliation Hitachi Ltd. Central Research Laboratory
Date 2012-09-21
Paper # CAS2012-44,NLP2012-70
Volume (vol) vol.112
Number (no) 205
Page pp.pp.-
#Pages 6
Date of Issue