Patent Number: 6,166,585

Title: Methods and apparatus for a high efficiency charge pump that includes a MOSFET capacitor operating in an accumulation region

Abstract: A charge pump circuit includes MOS capacitors configured to operate in the accumulation region, resulting in a substantially constant capacitance over the operational range. In a particularly preferred embodiment, a char ge pump uses multiple stages of p-channel MOS capacitors. In accordance with a further aspect of the present invention, oxide thicknesses of the p-channel MOS capacitors are optimized in accordance with the requirements of each stage.

Inventors: Bazzani; Cristiano (Irvine, CA)

Assignee: Conexant Systems, Inc.

International Classification: H02M 3/07 (20060101); H02M 3/04 (20060101); G05F 001/10 ()

Expiration Date: 12/26/2017