Charge pump circuit and method thereof
AssigneeHimax Technologies Limited
InventorsChin-Feng Hsu, Hsien-Ting Huang
Life of this patent
Estimating the term…
Abstract
A charge pump circuit includes a charging capacitor, a plurality of pumping capacitors, a charging circuit, and a pumping circuit. The charging circuit is configured for charging the charging capacitor when the charge pump circuit is under a charging phase; and the pumping circuit is configured for coupling the charging capacitor charged in the charging phase to a pumping capacitor to generate an output voltage level at the pumping capacitor according to a potential difference stored in the charging capacitor, when the charge pump circuit is under a pumping phase.
Claims14
A charge pump circuit, comprising:
- a charging capacitor;
- a plurality of pumping capacitors;
- a charging circuit, for charging the charging capacitor when the charge pump circuit is under a charging phase;
- and
- a pumping circuit, for coupling the charging capacitor charged in the charging phase to a pumping capacitor selected from the pumping capacitors to generate an output voltage level at the pumping capacitor according to a potential difference stored in the charging capacitor, when the charge pump circuit is under a pumping phase.
A method of controlling a charge pump circuit, comprising:
- when the charge pump circuit is under a charging phase, charging a charging capacitor;
- and
- when the charge pump circuit is under a pumping phase, coupling the charging capacitor charged in the charging phase to a pumping capacitor selected from a plurality of pumping capacitors to generate an output voltage level at the pumping capacitor according to a potential difference stored in the charging capacitor.
Dependencies are inferred from the claim text.