Boost converter

Patent metadata

Field	Value
Publication number	US-12476537-B2
Application number	US-202318114323-A
Country	US
Kind code	B2
Filing date	Feb 27, 2023
Priority date	Dec 1, 2022
Publication date	Nov 18, 2025
Grant date	Nov 18, 2025

Abstract

A boost converter is provided. A first terminal of a first inductor of the boost converter is connected to a positive terminal of an input power source. In the of the boost converter, a second terminal of the first inductor is connected to a first terminal of a resonant inductor, and a second terminal of the resonant inductor is connected to a first terminal of a main switch. A second terminal of the main switch is connected to a negative terminal of the input power source. In the of the boost converter, a first terminal of a clamp switch is connected to the second terminal of the resonant inductor, a second terminal of the clamp switch is connected to a first terminal of a first storage capacitor, and a second terminal of the first storage capacitor is connected to the first terminal of the first inductor.

First claim

What is claimed is:

1 . A boost converter, comprising:
a booster circuit, including:
a first inductor, wherein a first terminal of the first inductor is connected to a positive terminal of an input power source;
a resonant inductor, wherein a first terminal of the resonant inductor is connected to a second terminal of the first inductor;
a main switch, wherein a first terminal of the main switch is connected to a second terminal of the resonant inductor, a second terminal of the main switch is connected to a negative terminal of the input power source, and a control terminal of the main switch receives a first control signal from an external circuit connected to the control terminal of the main switch;
a clamp switch, wherein a first terminal of the clamp switch is connected to the second terminal of the resonant inductor, and a control terminal of the clamp switch receives a second control signal from the external circuit connected to the control terminal of the clamp switch;
a first storage capacitor, wherein a first terminal of the first storage capacitor is connected to a second terminal of the clamp switch, and a second terminal of the first storage capacitor is connected to the first terminal of the first inductor;
an output booster circuit including a plurality of output inductors connected to each other in series, wherein a first terminal of one of the plurality of output inductors is connected to the second terminal of the first inductor; and
an output capacitor, wherein a first terminal of the output capacitor is connected to a second terminal of another one of the plurality of output inductors, and a second terminal of the output capacitor is connected to the negative terminal of the input power source; and
a boosted output increasing circuit, including:
a second inductor, wherein a first terminal of the second inductor is connected to the second terminal of the first inductor; and
a second storage capacitor, wherein a first terminal of the second storage capacitor is connected to a second terminal of the second inductor, and a second terminal of the second storage capacitor is connected to the second terminal of the main switch;
wherein the boosted output increasing circuit includes a plurality of boosted output increasing sub-circuits, the plurality of boosted output increasing sub-circuits are connected in parallel to each other, and each of the plurality of boosted output increasing sub-circuits includes the second inductor and the second storage capacitor.

2 . The boost converter according to claim 1 , wherein the first inductor is a coupled inductor.

3 . The boost converter according to claim 1 , wherein the second inductor is a coupled inductor.

4 . The boost converter according to claim 1 , wherein the plurality of output inductors of the output booster circuit include:
a first output inductor, wherein a first terminal of the first output inductor is connected to the second terminal of the first inductor; and a second output inductor, wherein a first terminal of the second output inductor is connected to a second terminal of the first output inductor, and a second terminal of the second output inductor is connected to the first terminal of the output capacitor.

5 . The boost converter according to claim 4 , wherein the output booster circuit further includes:
a diode, wherein an anode of the diode is connected to the second terminal of the second output inductor, and a cathode of the diode is connected to the first terminal of the output capacitor.

6 . The boost converter according to claim 4 , wherein the output booster circuit further includes:
a third output inductor, wherein a first terminal of the third output inductor is connected to the second terminal of the second output inductor, and a second terminal of the third output inductor is connected to the first terminal of the output capacitor.

7 . The boost converter according to claim 6 , wherein the output booster circuit further includes:
a diode, wherein an anode of the diode is connected to the second terminal of the third output inductor, and a cathode of the diode is connected to the first terminal of the output capacitor.

8 . The boost converter according to claim 1 , wherein the plurality of output inductors of the output booster circuit include a first output inductor and a second output inductor, and the output booster circuit further includes a diode, a first capacitor, an auxiliary diode and a second capacitor;
wherein a first terminal of the first output inductor is connected to the second terminal of the first inductor, a second terminal of the first output inductor is connected to an anode of the diode, a cathode of the diode is connected to a first terminal of the first capacitor, a second terminal of the first capacitor is connected to the negative terminal of the input power source, a first terminal of the second output inductor is connected to the first terminal of the first capacitor, an anode of the auxiliary diode is connected to a second terminal of the second output inductor, a cathode of the auxiliary diode is connected to a first terminal of the second capacitor, and a second terminal of the second capacitor is connected to the first terminal of the first capacitor.

Assignees

• Univ Nat Taiwan Science & Technology

Inventors

• Lin Jing-Yuan
• Lin Yi-Feng
• Chen Chuan-Ting

Classifications

• Y02B70/10

  Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes · CPC title

• H02M3/158 Primary

  including plural semiconductor devices as final control devices for a single load · CPC title

• H02M3/07

  using capacitors charged and discharged alternately by semiconductor devices with control electrode {, e.g. charge pumps} · CPC title

• H02M3/01 Primary

  Resonant DC/DC converters · CPC title