An ultra-low-power digitally-controlled buck converter IC for cellular phone applications Export

@inproceedings{citeulike:854547, abstract = {This paper describes a dual-mode digitally-controlled buck converter IC for cellular phone applications. An architecture employing internal power management is introduced to ensure voltage compatibility between a single-cell lithium-ion battery voltage and a low voltage integrated circuit technology. Special purpose analog and digital interface elements are developed. These include a ring-oscillator based ADC (ring-ADC), which is nearly entirely synthesizable, robust against switching noise, and has flexible resolution control, and a very low power ring oscillator-multiplexer based digital PWM generation module (ring-MUX DPWM). The chip, which includes an output power stage rated for 400 mA, occupies 2 mm/sup 2/ active area in 0.25 /spl mu/m CMOS. Very high efficiencies are achieved over a load range of 0.1 to 400 mA. Measured quiescent current in PFM mode is 4 /spl mu/A.}, author = {Xiao, J. and Peterchev, A. and Zhang, J. and Sanders, S.}, citeulike-article-id = {854547}, citeulike-linkout-0 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1295838}, journal = {Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE}, keywords = {buck, converter, low-power}, pages = {383--391 Vol.1}, posted-at = {2006-09-22 17:28:32}, priority = {2}, title = {An ultra-low-power digitally-controlled buck converter IC for cellular phone applications}, url = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1295838}, volume = {1}, year = {2004} }

TY - CONF ID - citeulike:854547 L3 - citeulike-article-id:854547 N2 - This paper describes a dual-mode digitally-controlled buck converter IC for cellular phone applications. An architecture employing internal power management is introduced to ensure voltage compatibility between a single-cell lithium-ion battery voltage and a low voltage integrated circuit technology. Special purpose analog and digital interface elements are developed. These include a ring-oscillator based ADC (ring-ADC), which is nearly entirely synthesizable, robust against switching noise, and has flexible resolution control, and a very low power ring oscillator-multiplexer based digital PWM generation module (ring-MUX DPWM). The chip, which includes an output power stage rated for 400 mA, occupies 2 mm/sup 2/ active area in 0.25 /spl mu/m CMOS. Very high efficiencies are achieved over a load range of 0.1 to 400 mA. Measured quiescent current in PFM mode is 4 /spl mu/A. JF - Applied Power Electronics Conference and Exposition, 2004. APEC '04. Nineteenth Annual IEEE EP - 391 Vol.1 TI - An ultra-low-power digitally-controlled buck converter IC for cellular phone applications VL - 1 SP - 383 KW - buck KW - converter KW - low-power AU - Xiao, J AU - Peterchev, A AU - Zhang, J AU - Sanders, S PY - 2004/// UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1295838 ER -