A voltage regulating output switching power supply

A technology of output switch and output voltage, which is applied in the field of output voltage adjustable switching power supply, which can solve the problems of inconvenient and unsafe manual adjustment of the output voltage of switching power supply, and achieves the effect of being practical, reliable, easy to popularize, and simple in principle

Active Publication Date: 2022-06-28
SHANGHAI INST OF SPACE POWER SOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a voltage-regulated output switching power supply to solve the problem of unsafe and inconvenient manual adjustment of the output voltage of the switching power supply

Method used

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  • A voltage regulating output switching power supply
  • A voltage regulating output switching power supply
  • A voltage regulating output switching power supply

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Embodiment Construction

[0040] The technical solutions proposed by the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the accompanying drawings are in a very simplified form and all use inaccurate scales, and are only used to facilitate and clearly assist the purpose of explaining the embodiments of the present invention. For the purpose, features and advantages of the present invention to be more clearly understood, please refer to the accompanying drawings. It should be noted that the structures, proportions, sizes, etc. shown in the drawings in this specification are only used to cooperate with the contents disclosed in the specification, so as to be understood and read by those who are familiar with the technology, and are not used to limit the implementation of the present inventio...

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Abstract

The present invention provides a voltage regulation output switching power supply, including a DC / DC converter main circuit, a switch tube drive signal control circuit and a relay switch circuit for controlling voltage regulation output; the DC / DC converter main circuit includes a DC / DC converter and voltage dividing sampling resistor; the switch tube drive signal control circuit is used to send a drive signal to control the opening and closing of the switch tube of the DC / DC converter; the relay switch circuit includes a plurality of The relay switch and a plurality of gear-adjusting resistors, by controlling the switching states of a plurality of the relay switches, the multiple gear-adjusting resistors and the voltage-dividing sampling resistors realize different series-parallel relationships, so that the DC / DC converter main circuit has different output voltage V out . The invention can solve the problem of unsafe and inconvenient manual adjustment of the output voltage of the switching power supply.

Description

technical field [0001] The invention relates to the technical field of switching power supplies, in particular to an output voltage adjustable switching power supply with multiple output voltage levels. Background technique [0002] Power plays a pivotal role in today's era. Whether it is industrial production or daily life, higher requirements are placed on the power system, such as small size and high efficiency. Based on this, switching power supply technology using power semiconductor devices as switches was born. Compared with the traditional linear power supply, the switching power supply has the advantages of small size, high efficiency and large output power, and has become the most widely used power supply type. [0003] For applications where the same power supply produces different voltage output gears and the sampling feedback voltage remains unchanged, it can be achieved by changing the distribution of sampling voltage resistances. , the process is complicated...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/00H02M1/08
CPCH02M3/00H02M1/08
Inventor 蔡婧璐邹锦浪蓝兴盛徐正军张智芳段永辉王新征
Owner SHANGHAI INST OF SPACE POWER SOURCES
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