Search results for: A. Seedher
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An on-chip boost DC-DC converter used in White LED (WLED) drivers & controller ICs for mobile applications is presented in this paper. The boost controller provides a programmable average current to a string of up to six LEDs in series A Constant On-Time (COT) valley-current-mode control loop sets the duty cycle by controlling the off period. This converter is designed with a 40 nm standard CMOS...
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For cellular handset ICs, integrating the power management unit (PMU) in the same chip as the baseband and the radio is critical for footprint and cost reduction, however, it presents unique challenges in terms of device reliability, bill of materials (BOM) and PMU performance. In this paper, a PMU integrated as part of a GSM/EDGE chip in a 65nm deep-Nwell CMOS process, comprising a battery charger,...
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IEEE Transactions on Circuits and Systems II: Express Briefs > 2008 > 55 > 7 > 619 - 623
Spurious-free dynamic range (SFDR) is one of the most important design metrics for a high-performance digital-analog converter (DAC). SFDR is limited by both dynamic (switching) and static (mismatch) nonlinearities. A good design needs to ensure that the spurious spectral tones caused by the static mismatches do not limit the performance. Aggressively scaling device sizes have also aggravated the...
