publication . Thesis . Conference object . 2015

A two-phase buck converter with optimum phase selection for low power applications

Taylor Yeago; Ji Hoon Hyun; Dong Sam Ha; Qiang Li;
Open Access
  • Published: 27 Jan 2015
  • Publisher: Virginia Tech
  • Country: United States
Abstract
Power consumption of smart cameras varies significantly between sleep mode and active mode, and a smart camera operates in sleep mode for 80 — 90% of time for typical use. To prolong the battery life of smart cameras, it is essential to increase the power converter efficiency for light load, while being able to manage heavy load. The power stage of traditional buck converter is optimized for maximum load, at the cost of light-load efficiency. Wei proposed a multiphase buck converter incorporating the baby-buck concept and optimum number of phases (ONP) control. This thesis research investigated Wei's multiphase buck converter to improve the light-load efficiency...
Subjects
free text keywords: Synchronous Buck Converter, Constant ON-Time Control, Optimum Phase Selection, Light-load efficiency, Pulse Frequency Modulation, Pulse-frequency modulation, Maximum efficiency, Light load, Logic gate, Control theory, Electronic engineering, Control engineering, Ranging, Buck converter, Engineering, business.industry, business, Inductor, MOSFET
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publication . Thesis . Conference object . 2015

A two-phase buck converter with optimum phase selection for low power applications

Taylor Yeago; Ji Hoon Hyun; Dong Sam Ha; Qiang Li;