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Topological structure of multiphase stacked interleaved buck converter

A topology and converter technology, which is applied in the topology field of multi-phase stacked interleaved step-down converters, can solve the problems of low working efficiency, low fault tolerance, and large current stress of interleaved step-down converters, and achieve reduced current Effects of excessive stress, optimized topology, and elimination of current ripple

Pending Publication Date: 2022-04-12
TIANJIN CHENGJIAN UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] An embodiment of the present invention provides a topology structure of a multi-phase stacked interleaved buck converter, to at least solve the problem of excessive current stress of switches in the prior art interleaved buck converter, low working efficiency of the interleaved buck converter, and Technical problems with low fault tolerance

Method used

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  • Topological structure of multiphase stacked interleaved buck converter
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  • Topological structure of multiphase stacked interleaved buck converter

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Embodiment 1

[0032] The embodiment of the present invention provides a topology of a multi-phase stacked interleaved buck converter, image 3 is a schematic diagram of the topology of a multi-phase stacked interleaved buck converter according to an embodiment of the present invention, such as image 3 As shown, the above topology includes:

[0033] a first number of primary circuits, and;

[0034] The first number of slave circuits is connected to the above-mentioned first number of master circuits, and is used to eliminate current ripples in the circuits;

[0035] A first number of bridge arms is connected to the first number of master circuits and the first number of slave circuits, and is used to control the charging and discharging states of the first number of master circuits and the first number of slave circuits.

[0036] In the embodiment of the present invention, a method of constructing a multi-phase stacked interleaved step-down converter topology is adopted, by setting the fi...

Embodiment 2

[0049] The embodiment of the present invention provides a topology structure of a three-phase stacked interleaved converter, Figure 4a is a schematic diagram of an optional three-phase stacked interleaved converter topology according to an embodiment of the present invention, as shown in Figure 4a As shown, the above topology includes:

[0050] three main loops, and

[0051] Three slave circuits, connected to the above three main circuits, are used to eliminate current ripples in the circuits;

[0052] The three bridge arms are connected to the three main circuits and the three slave circuits, and are used to control the charging and discharging states of the three main circuits and the three slave circuits.

[0053] In the embodiment of the present invention, the topology structure of a multi-phase stacked interleaved step-down converter is constructed, and three main loops and three slave loops are set up to connect with the above three main loops to eliminate the loop ...

Embodiment 3

[0066] The embodiment of the present invention provides a topology structure of a two-phase stacked interleaved step-down converter, Figure 5a is a schematic diagram of the topology of an optional two-phase stacked interleaved buck converter according to an embodiment of the present invention, such as Figure 5a As shown, the above topology includes:

[0067] two main loops, and

[0068] Two slave circuits, connected to the above two main circuits, are used to eliminate current ripples in the circuits;

[0069] The two bridge arms are connected to the two main circuits and the two slave circuits, and are used to control the charging and discharging states of the two main circuits and the two slave circuits.

[0070] In the embodiment of the present invention, the topology structure of a multi-phase stacked interleaved step-down converter is constructed, and two main loops and two slave loops are set up to connect with the above two main loops to eliminate the loop The curr...

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Abstract

The invention discloses a topological structure of a multiphase stacked interleaved buck converter. The topological structure comprises a first number of main loops and a first number of slave loops, and the slave loops are connected with the first number of main loops and used for eliminating current ripples in the loops. And the first number of bridge arms are connected with the first number of main loops and the first number of slave loops and are used for controlling the charging and discharging states of the first number of main loops and the first number of slave loops. The technical problems that in the prior art, the current stress of a switch in an interleaving buck converter is too large, and the interleaving buck converter is low in working efficiency and low in fault tolerance are solved.

Description

technical field [0001] The invention relates to the field of converter control, in particular to a topology structure of a multi-phase stacked interleaved step-down converter. Background technique [0002] The topologies of interleaved buck converters in the prior art mainly include interleaved parallel buck converters and stacked interleaved buck converters. Among them, the interleaved parallel buck converter uses two bridge arms and four switches, such as figure 1 As shown, since the switches of the interleaved parallel buck converter are interleaved in the working process, the above interleaved parallel buck converter can only realize the complete cancellation of the output ripple when the duty cycle is 50%. There are certain limitations in the converter, and the work efficiency is low. [0003] The stacked interleaved buck converter also uses two bridge arms and four switches, such as figure 2 As shown, due to the existence of the capacitance of the slave circuit, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M1/14
Inventor 潘雷李伟琳孙鹤旭董砚胡傲森庞毅张静梅陈建伟
Owner TIANJIN CHENGJIAN UNIV
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