A 200-mA, 93% peak power efficiency, single-inductor, dual-output DC–DC buck converter

Edoardo Bonizzoni, Fausto Borghetti, Piero Malcovati, Franco Maloberti
2009 Analog Integrated Circuits and Signal Processing  
A single-inductor dual-output (SIDO) DC-DC buck converter is presented. The circuit uses only one (external) inductor to provide two independent output voltages ranging from 1.2 V to the power supply (2.6-5 V) with a maximum total output current of 200 mA. The proposed converter has been fabricated in a 0.35-lm p-substrate CMOS technology. Measurement results demonstrate that a peak power efficiency as high as 93.3% can be achieved. An automatic substrate bias switch technique, that cancels the
more » ... body effect of the p-channel output power transistors, improves the converter power efficiency performance.
doi:10.1007/s10470-009-9330-x fatcat:cjtdzulycjh3nibiory4gnpo5m