A CMOS ripple detector for integrated voltage regulator testing

Ozmen, Cagatay; Dirican, Aydin; Tan, Nurettin; Nguyen, Hieu V.; Margala, Martin

doi:10.1109/mwscas.2015.7282194

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“…The ripple is emulated by a sinusoid superimposed on the supply line. The circuit generates a digital output providing a pass or fail signal based on external DC reference input [12,13]. The sensor can be integrated on-chip and used during test mode or during normal operation of the SOC due to its low area overhead.…”

Section: Introductionmentioning

confidence: 99%

A CMOS Ripple Detector for Voltage Regulator Testing

et al. 2016

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This paper presents an RMS based ripple sensor for testing of fully integrated voltage regulators. A DC signal which is proportional to the input ripple amplitude is generated. Final digital pass/fail signal is obtained with a clocked comparator. The sensor can detect a peak-topeak ripple voltage of up to 50 millivolts on the 1.2 V supply rail and has 220 MHz bandwidth. The sensor is designed using IBM 90 nm CMOS technology and its functionality is verified in Cadence Virtuoso simulation environment.

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Section: Introductionmentioning

confidence: 99%