Hybrid DC/DC power converter with charge-pump and buck converter

摘要

A hybrid Direct Current (DC) to DC converter is disclosed for efficiently converting an input voltage from one level to another. In a preferred embodiment, a dual phase charge pump is combined with a buck converter and a switch controller to provide a converted voltage that is useable to cellular handset circuits based on power amplifier (PA) technology.

主权项

1. Charge pump circuitry comprising:
a first switch coupling an input node and a first node; a second switch coupling the first node and a charge transfer node; a third switch coupling the input node and a second node; a fourth switch coupling the second node and a fixed voltage node; a fifth switch coupling the input node and a third node; a sixth switch coupling the third node to the charge transfer node; a seventh switch coupling the input node to a fourth node; an eighth switch coupling the fourth node to the fixed voltage node; a first flying capacitor coupling the first node and the second node; a second flying capacitor coupling the third node to the fourth node, and wherein the first switch and the second switch are configured to be directly controlled by a third node voltage from the third node.