Patent ID: 6433623
Filing Date: 2002-08-13
Classification: H02M

Abstract:
A method of control of a voltage boost circuit comprising a booster capacitance, having first and second terminals, and first, second, third and fourth conduction means, operatively coupled therewith, said method comprising the steps of:connecting the first terminal of said booster capacitance to a power supply terminal through said first conduction means, and the second terminal of said booster capacitance to a reference voltage through said second conduction means, during a charging period; connecting the second terminal of said booster capacitance to said power supply terminal through said third conduction means, and the first terminal of said booster capacitance to an output terminal through said fourth conduction means, during a charge transfer period following said charging period, said charging period and said charge transfer period together forming a boost cycle; and adjusting said charging period in accordance with a magnitude of a power supply voltage applied at said power supply terminal.