US 12,191,766 B2 · Hybrid power converter

Abstract

A power converter for converting an input voltage at an input of the power converter into an output voltage at an output of the power converter may include a switching node, a power inductor coupled between the switching node and the output, a flying capacitor having a first flying capacitor terminal and a second flying capacitor terminal, a pump capacitor having a first pump capacitor terminal and a second pump capacitor terminal, the second pump capacitor terminal coupled to ground, a first switch coupled between the input and the first flying capacitor terminal, a second switch coupled between the first flying capacitor terminal and the switching node, a third switch coupled between the second flying capacitor terminal and the switching node, a fourth switch coupled between the second flying capacitor terminal and a ground voltage, a fifth switch coupled between the second flying capacitor terminal and the first pump capacitor terminal, and a sixth switch coupled between the output and the first pump capacitor terminal.

Claims22

Dependent claims

A power converter for converting an input voltage at an input of the power converter into an output voltage at an output of the power converter, the power converter comprising:

a switching node;
a power inductor coupled between the switching node and the output;
a flying capacitor having a first flying capacitor terminal and a second flying capacitor terminal;
a pump capacitor having a first pump capacitor terminal and a second pump capacitor terminal, the second pump capacitor terminal coupled to ground such that the second pump capacitor terminal maintains its voltage approximately equal to a ground voltage of the ground;
a first switch coupled between the input and the first flying capacitor terminal;
a second switch coupled between the first flying capacitor terminal and the switching node;
a third switch coupled between the second flying capacitor terminal and the switching node;
a fourth switch coupled between the second flying capacitor terminal and the ground such that a terminal of the fourth switch maintains its voltage approximately equal to the ground voltage;
a fifth switch coupled between the second flying capacitor terminal and first pump capacitor terminal;
and
a sixth switch coupled between the output and the first pump capacitor terminal.

8 more elements

An integrated circuit for use in a power converter for converting an input voltage at an input of the integrated circuit into an output voltage at an output of the power converter, the integrated circuit comprising:

a switching node;
a first switch coupled between the input and a first node configured to couple to a first flying capacitor terminal of a flying capacitor;
a second switch coupled between the first node and the switching node;
a third switch coupled between the switching node and a second node configured to couple to a second flying capacitor terminal of the flying capacitor;
a fourth switch coupled between the second node and a third node at a ground voltage;
a fifth switch coupled between the second node and a fourth node configured to couple to a first pump capacitor terminal of a pump capacitor coupled to a ground voltage at a second pump capacitor terminal, such that the second pump capacitor terminal maintains its voltage approximately equal to a ground voltage of the ground;
and
a sixth switch coupled between the output and the fourth node.

5 more elements

Dependencies are inferred from the claim text.

Hybrid power converter

Life of this patent

Hybrid power converter

Life of this patent

Abstract

Claims22