Patent ID: 8198756
Filing Date: 2012-06-12
Classification: H02M,H03F

Abstract:
1. A voltage-boosting stage comprising: a first capacitive voltage circuit coupled to a power supply and providing a first output voltage at a first output terminal, a second capacitive voltage circuit coupled to the power supply and providing a second output voltage at a second output terminal, the second output terminal and the first output terminal being coupled together and further coupled to a supply terminal of a power stage for implementing a two-level supply boosted power stage, wherein the first and second capacitive circuits include a first switch having a respective first terminal coupled to a negative terminal of the power supply and a respective second terminal coupled to a second switch, the second switch having a third terminal coupled to the respective second terminal of the respective first switch and further coupled to a first terminal of a respective first or second capacitor, a second terminal of said first or second capacitor being coupled to a fourth terminal of a respective third switch and to a fifth terminal of a respective fourth switch, the fourth switch being further coupled to respective first or second output terminal of the first or second capacitive circuit, respectively, wherein one of the fourth switch comprises at least two related switches having different equivalent resistances.