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Suppressing output overshoot voltage technique with 47.1mW/μs power-recycling rate and 93% peak efficiency DC-DC converter for multi-core processors

Conversion efficiency degrades in case of heavy-to-light loading change since state-of-art overshoot reduction techniques simply dissipate redundant energy at the output of buck DC-DC converter. Thus, the proposed dual-mode ripple-recovered compensator (D-RRC) and multi-phase suppressing output over...

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Bibliographic Details
Main Authors: Chien, Meng-Wei, Yang, Wen-Hau, Chou, Ying-Wei, Chen, Hsin-Chieh, Chen, Wei-Chung, Chen, Ke-Horng, Wey, Chin-Long, Lai, Shin-Chi, Lin, Ying-Hsi, Lee, Chao-Cheng, Lin, Jian-Ru, Tsai, Tsung-Yen, Luo, Hsin-Yu
Format: Conference Proceeding
Language:English
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Summary:Conversion efficiency degrades in case of heavy-to-light loading change since state-of-art overshoot reduction techniques simply dissipate redundant energy at the output of buck DC-DC converter. Thus, the proposed dual-mode ripple-recovered compensator (D-RRC) and multi-phase suppressing output overshoot voltage (MP-SOOV) technique uses 33nH bondwire inductance to recycle energy and provides 47.1mW/μs ultra-fast power-recycling rate to suppress overshoot voltage from 507mV to 95mV with 81.3% improvement when load changes from 1.7A to 0.3A. Experimental results show 93% high efficiency and highspeed operation with only tens of nano second on-time period.
ISSN:1930-8833
2643-1319
DOI:10.1109/ESSCIRC.2015.7313860