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Switched capacitor-differential switching power supply composite DC-DC converter

A DC-DC, switched capacitor technology, applied in the direction of adjusting electrical variables, converting DC power input into DC power output, instruments, etc. Component requirements, reduced efficiency, effects of flexible bus voltage

Inactive Publication Date: 2021-07-09
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, SMPS converters require large inductive energy storage elements to achieve high-efficiency, low-ripple power conversion, and these elements generally occupy about 40% of the volume and weight of the entire system
The large demand for inductive energy storage components in SMPS converters will not be conducive to the miniaturization and integration of DC-DC converters.

Method used

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  • Switched capacitor-differential switching power supply composite DC-DC converter

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Embodiment Construction

[0017] The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solution of the present invention more clearly, but not to limit the protection scope of the present invention.

[0018] The present invention proposes a multi-output SC-DSMPS composite converter topology, which can combine the advantages of switching capacitors and switching power converters: using SC converters for high power density voltage initial adjustment, reducing the demand for inductive components; using The differential structure of the DSMPS converter further reduces the operating voltage of the inductive element, and realizes a variable voltage regulation ratio, converting the dynamic discrete voltage into a continuous regulated output. The following takes the three-way output as an example for a specific description, as follows:

[0019] Under the power supply of 6~10V battery, the composite ...

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Abstract

The invention relates to the technical field of power electronics and integrated circuit design, and discloses a switched capacitor-differential switching power supply composite DC-DC converter. The composite DC-DC converter comprises a power supply module, a front-end switched capacitor converter and a rear-end differential switching power supply converter, the power supply module is connected with the front-end switched capacitor converter, and the rear-end differential switching power supply converter is connected with the rear-end switched capacitor converter. The output end of the front-end switched capacitor converter is connected with the input end of the rear-end differential switching power supply converter, each of the front-end switched capacitor converter and the rear-end differential switching power supply converter is provided with n paths of outputs, and n is a positive integer greater than or equal to 1. Compared with the prior art, a switched capacitor and the switching power supply converter are combined, and high-power-density voltage initial adjustment is carried out by utilizing an SC converter, so the requirement of an inductive element is reduced; and the differential structure of the DSMPS converter is utilized to further reduce the working voltage of the inductive element, the variable voltage regulation ratio is realized, and the dynamic discrete voltage is converted into continuous voltage stabilization output.

Description

technical field [0001] The invention relates to the technical fields of power electronics and integrated circuit design, in particular to a switched capacitor-differential switching power supply composite DC-DC converter. Background technique [0002] With the miniaturization and lightweight development of portable mobile devices, the system has continuously put forward higher requirements for the power density of the power converter. The main technical paths for DC-DC power conversion from the battery to the load include: Low Drop Out (LDO), Switched Capacitor (SC) and Switched Mode Power Supply (SMPS) technologies. Compared with LDO and SC technology, SMPS converter has better efficiency, ripple, dynamic response and stable voltage output capability, and is the first choice for high-quality power conversion. In Intel's fourth-generation Core processors, the integrated SMPS converter doubles the battery life of mobile PC products and extends battery life by 50%. However, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/156H02M1/14H02M1/32
CPCH02M3/156H02M1/14H02M1/32
Inventor 闵闰童乔凌申高帅
Owner HUAZHONG UNIV OF SCI & TECH
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