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DC constant-voltage output converter

A constant voltage output and converter technology, which is applied to output power conversion devices, instruments, DC power input conversion to DC power output, etc., can solve the problems of difficulty in integration and high cost of overall circuit implementation, and achieve high reliability , fast response effect

Pending Publication Date: 2018-08-03
SHUNDE POLYTECHNIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of the same performance, the response of the single-chip software programming method will not be as timely as the hardware circuit method, and it is not easy to integrate, and the implementation cost of the overall circuit is relatively high

Method used

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Embodiment Construction

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0035] In describing the present invention, it is to be understood that the terms "central", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, Constructed and o...

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Abstract

The invention discloses a DC constant-voltage output converter. The DC constant-voltage output converter comprises a 12V or 24V low-voltage power input end, an auxiliary power circuit, an automatic frequency switching circuit, a PWM control circuit, a boost output rectification filter circuit, a potential logic protection circuit, a push-pull type boost topology circuit and an output constant-voltage automatic switching circuit. Potential logic monitoring is judged according to different states (undervoltage, overvoltage, normal) of input bus voltage, so that starting and stopping of the entire circuit are controlled by controlling a PWM module. The output constant-voltage automatic switching circuit ensures safe and stable voltage output at different kinds of input voltage. A special winding distribution design is conducted for a high-frequency boost transformer connected to a push-pull topology to adapt to two different kinds of input voltage. The output constant-voltage automatic switching circuit can ensure constant-voltage output during different inputs.

Description

technical field [0001] The invention relates to the technical field of constant voltage output circuit design, in particular to a DC constant voltage output converter. Background technique [0002] With the rise of green renewable energy such as photovoltaic power generation, the application of inverter power supply and related research are becoming more and more extensive and in-depth. It is widely used in home, company server, satellite relay station and even aerospace industry. The boost circuit is a key part of the inverter power supply, and its key indicators such as working stability, safety, and response sensitivity all affect the normal operation of the entire inverter power supply system. [0003] Multi-input step-up DC constant voltage output converter is a common component in inverter power supply. In the boost circuit, the commonly used methods are: Push-Pull (push-pull topology), Weinberg Circuit (Weinberg circuit topology), Half-Bridge (half-bridge topology),...

Claims

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Application Information

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IPC IPC(8): H02M3/337H02H7/12
CPCH02H7/1213H02M3/3376Y02B70/10
Inventor 宋玉宏刘加松
Owner SHUNDE POLYTECHNIC
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