Power converter
First Claim
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1. A power converter, comprising:
- a pre-stage circuit, configured to receive an input voltage and convert the input voltage to a bus voltage; and
a plurality of post-stage circuits, connected in parallel to an output terminal of the pre-stage circuit, and configured to receive the bus voltage from the pre-stage circuit and each converts the bus voltage to an output voltage,wherein the pre-stage circuit comprises a first capacitor disposed on an output side of the pre-stage circuit, and each of the post-stage circuits comprises a second capacitor disposed on an input side of the post-stage circuit,wherein the power converter comprises an inductor disposed between the first capacitor and the second capacitor, andwherein the second capacitor is connected in series with the inductor to define a first series branch, the first series branch is connected in parallel across the first capacitor, and a distance between the first capacitor and the second capacitor is set to satisfy both of following conditions;
at a frequency of an output current of the pre-stage circuit, an absolute value of an impedance of the first series branch is less than or equal to
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Abstract
The present disclosure provides a power converter, including: a pre-stage circuit, configured to receive an input voltage and convert the input voltage to a bus voltage; and plurality of post-stage circuits, connected in parallel to an output terminal of the pre-stage circuit, and configured to receive the bus voltage from the pre-stage circuit and each converts the bus voltage to an output voltage. The power converter provided by the present disclosure can effectively solve the problems of isolation and the wide range of operating voltage, and can take both of high efficiency and high power density into consideration.
17 Citations
20 Claims
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1. A power converter, comprising:
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a pre-stage circuit, configured to receive an input voltage and convert the input voltage to a bus voltage; and a plurality of post-stage circuits, connected in parallel to an output terminal of the pre-stage circuit, and configured to receive the bus voltage from the pre-stage circuit and each converts the bus voltage to an output voltage, wherein the pre-stage circuit comprises a first capacitor disposed on an output side of the pre-stage circuit, and each of the post-stage circuits comprises a second capacitor disposed on an input side of the post-stage circuit, wherein the power converter comprises an inductor disposed between the first capacitor and the second capacitor, and wherein the second capacitor is connected in series with the inductor to define a first series branch, the first series branch is connected in parallel across the first capacitor, and a distance between the first capacitor and the second capacitor is set to satisfy both of following conditions; at a frequency of an output current of the pre-stage circuit, an absolute value of an impedance of the first series branch is less than or equal to - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15, 16, 17, 18)
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11. A power converter, comprising:
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a pre-stage circuit, configured to receive an input voltage and convert the input voltage to a bus voltage; and a plurality of post-stage circuits, connected in parallel to an output terminal of the pre-stage circuit, and configured to receive the bus voltage from the pre-stage circuit and each converts the bus voltage to an output voltage, wherein the pre-stage circuit comprises a first capacitor disposed on an output side of the pre-stage circuit, and each of the post-stage circuits comprises a capacitor disposed on an input side of the post-stage circuit, wherein the power converter comprises an inductor disposed between the first capacitor and the second capacitor, and wherein the first capacitor is connected in series with the inductor to define a second series branch, the second series branch is connected in parallel across the second capacitor, and a distance between the first capacitor and the second capacitor is set to satisfy both of following conditions; at a frequency of an input current frequency of a post-stage circuit, an absolute value of an impedance of the second series branch is less than or equal to - View Dependent Claims (19, 20)
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Specification