On-Chip Resonant Supply Noise Canceller Utilizing Parasitic Capacitance of Sleep Blocks for Power Mode Switch

Jinmyoung KIM  Toru NAKURA  Hidehiro TAKATA  Koichiro ISHIBASHI  Makoto IKEDA  Kunihiro ASADA  

IEICE TRANSACTIONS on Electronics   Vol.E94-C   No.4   pp.511-519
Publication Date: 2011/04/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E94.C.511
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Section on Circuits and Design Techniques for Advanced Large Scale Integration)
power supply noise,  resonance,  parasitic capacitance,  sleep block,  DVS,  power gating,  

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This paper presents an on-chip resonant supply noise canceller utilizing parasitic capacitance of sleep blocks. The test chip was fabricated in a 0.18 µm CMOS process and measurement results show 43.3% and 12.5% supply noise reduction on the abrupt supply voltage switching and the abrupt wake-up of a sleep block, respectively. The proposed method requires 1.5% area overhead for four 100 k-gate blocks, which is 7.1 X noise reduction efficient comparing with the conventional decap for the same power supply noise, while achieves 47% improvement of settling time. These results make fast switching of power mode possible for dynamic voltage scaling and power gating.