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Title:
VARIABLE RATIO CHARGE PUMP WITH PEAK CURRENT AND AVERAGE CURRENT LIMITING CIRCUITRY
Document Type and Number:
WIPO Patent Application WO/2018/085410
Kind Code:
A3
Abstract:
A method of increasing a multiplication ratio of a charge pump, the multiplication ratio defining a relationship between an output voltage of the charge pump and an input voltage of the charge pump, comprising: analyzing a first efficiency of the charge pump when the multiplication ratio is at a first ratio, calculating a second efficiency of the charge pump when the multiplication ratio is a second ratio lesser than the first ratio, and based on the first efficiency and the second efficiency, determining at least one of a target output power and a target output voltage at which to change the multiplication ratio from the second ratio to the first ratio.

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Inventors:
KING ERIC J (US)
LARSEN CHRISTIAN (US)
BRENNAN AARON J (US)
Application Number:
PCT/US2017/059545
Publication Date:
June 14, 2018
Filing Date:
November 01, 2017
Export Citation:
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Assignee:
CIRRUS LOGIC INT SEMICONDUCTOR LTD (GB)
KING ERIC J (US)
International Classes:
H03F1/02; H02M3/07; H03F3/72
Foreign References:
US20140057684A12014-02-27
EP2688201A12014-01-22
US20140055197A12014-02-27
US20110298545A12011-12-08
EP2897270A12015-07-22
Attorney, Agent or Firm:
PREWITT, Brian K. et al. (US)
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