Power converter

摘要

A power converting circuit includes a converter. The converter receives and converts an input power to provide power for a load. The converter includes a power storage unit, a switch unit, a capacitor unit, and a current sampling unit. The power storage unit includes input and output terminals. The switch unit includes first and second switches, which are series connected at a common terminal, and the common terminal is coupled to the output terminal of the power storage unit. The capacitor unit includes first and second capacitors. The first capacitor and the switch unit are parallel connected to form a capacitor-switch parallel structure. The second capacitor capacitance is more than ten times larger than the first capacitor capacitance. The current sampling unit and the capacitor-switch parallel structure are series connected to form a capacitor-sampling unit series structure. The capacitor-sampling unit series structure and the second capacitor are parallel connected.

主权项

1. A power converter, comprising a converter, wherein the converter is configured to receive and convert an input power for providing power to a load, and the converter comprises:
a power storage unit comprising:
an input; andan output; a first switch unit comprising:
a first switch; anda second switch connected in series with the first switch at a first common terminal, wherein the first common terminal is coupled to the output of the power storage unit; a first capacitor unit comprising:
a first capacitor connected in parallel with the first switch unit to form a first capacitor-switch parallel structure; anda second capacitor, wherein the capacitance of the second capacitor is more than ten times larger than the capacitance of the first capacitor; and a first current sampling unit connected in series with the first capacitor-switch parallel structure to form a first capacitor-sampling unit series structure, wherein the first capacitor-sampling unit series structure and the second capacitor are connected in parallel, wherein the first current sampling unit is configured to detect at least one of the current of the first switch and the current of the second switch.