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DC-to-DC DC/DC conversion topology circuit and device

A DC-to-DC, topological circuit technology, applied in the direction of output power conversion device, DC power input conversion to DC power output, no intermediate conversion to AC conversion equipment, etc., to achieve the effect of flexible adjustment and flexible voltage regulation

Active Publication Date: 2020-04-17
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The embodiment of the present application provides a DC / DC conversion topology circuit and device to overcome the problem that neither the conventional switched inductor converter nor the switched capacitor converter can realize flexible voltage regulation on the basis of high power density

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  • DC-to-DC DC/DC conversion topology circuit and device

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Embodiment Construction

[0030] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments It is a part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0031]In the embodiments of the present application, "at least one" means one or more, and "multiple" means two or more. "And / or" describes the association relationship of associated objects, indicating that there can be three types of relationships, for example, A and / or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone, w...

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Abstract

The embodiment of the invention provides a DC-to-DC DC / DC conversion topology circuit and device. The circuit comprises an inductive energy storage module and a switched capacitor conversion topologymodule, wherein one end of the inductive energy storage module is connected with a voltage jump node of the switched capacitor conversion topology module. According to the embodiment of the invention,the inductive energy storage module is connected to the voltage jump node of the switched capacitor conversion topology module, through the current limiting role played by the inductive energy storage module, the impulse current of charging and discharging between capacitors in the switched capacitor conversion topology module is suppressed. Thus, when the duty ratio of a switching tube in the switched capacitor conversion topology module is changed, the influence on the effective value of the overall current of the circuit is relatively small, so that the duty ratio of the switching tube canbe changed at will in the switched capacitor conversion topology module, the output voltage can be flexibly adjusted, and the effect of flexibly adjusting the voltage on the basis of high power density is achieved.

Description

technical field [0001] The embodiments of the present application relate to circuit technology, and in particular to a DC / DC (direct current / direct current, DC / DC) conversion topology circuit and device. Background technique [0002] In a switching power supply, a switching converter is usually used to perform DC / DC conversion, thereby realizing an adjustable output voltage of the switching power supply. [0003] Generally, switching converters include switched inductor converters and switched capacitor converters. example, figure 1 The boost topology of the switched inductor converter is shown. By adjusting the duty cycle of the switch tube S1, the output voltage can be adjusted. In theory, figure 1 The output voltage of the boost topology shown has the following relationship to the input voltage: output voltage=input voltage / (1-duty cycle). figure 2 It shows the step-down (buck) topology of the switched inductor converter. By adjusting the duty cycle of the switch tube...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/07H02M3/155
CPCH02M3/07H02M3/155
Inventor 望庆磊蔡定辉吴建权
Owner HUAWEI DIGITAL POWER TECH CO LTD