Article ID Journal Published Year Pages File Type
1787422 Current Applied Physics 2007 6 Pages PDF
Abstract

An on-chip charge pump (CP) DC–DC converter applicable to potable displays is described. A merged 2×/3× booster eligible for both single-phase pumping and dual-phase pumping is developed. A closed-loop sensing scheme with analog/digital mixed-mode voltage regulation helps to ensure a low ripple output voltage and high power transfer efficiency. A test vehicle was implemented for a DC input range of 2.2–3.6 V and the DC output of 5 V with a load condition of 20 mA in a standard 0.35-μm 2poly-4metal CMOS process. The test results reveal output ripple of less than 80 mV and efficiency of 77.4% in the 2× dual phase mode.

Related Topics
Physical Sciences and Engineering Physics and Astronomy Condensed Matter Physics
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