Step-down DC conversion circuit structure

A circuit structure, DC conversion technology, applied in high-efficiency power electronic conversion, output power conversion devices, conversion equipment without intermediate conversion to AC, etc., can solve problems such as difficult to track, difficult to trace, and signal performance indicators.

Active Publication Date: 2020-10-30
NAWA ELECTRONICS SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This phenomenon is indeed easy to occur in actual use, and it is difficult to track, and this damage is invisible and difficult to trace
[0007] At the same time, due to the existence of the 0 ohm resistor R100, it was originally used for the convenience of testing the current, but in fact 0 ohm is not a complete 0 ohm resistor, often with 0.01 ohm or even 0.05 ohm resistance inside, in a certain In some applications where the current is relatively large and the voltage fluctuation has a relatively large impact on the signal, the 0 ohm resistor R100 will have a practical impact
For example, when the current is 1A, there will be a maximum voltage fluctuation of 0.05V. This voltage fluctuation seems small, but it will cause changes in signal performance indicators in many power supply scenarios.

Method used

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  • Step-down DC conversion circuit structure
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  • Step-down DC conversion circuit structure

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Embodiment Construction

[0035] The following description serves to disclose the present invention to enable those skilled in the art to carry out the present invention. The preferred embodiments described below are only examples, and those skilled in the art can devise other obvious variations. The basic principles of the present invention defined in the following description can be applied to other embodiments, variations, improvements, equivalents and other technical solutions without departing from the spirit and scope of the present invention.

[0036] It can be understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element The quantity can be multiple, and the term "a" cannot be understood as a limitation on the quantity.

[0037]In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example",...

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Abstract

The invention provides a step-down DC (direct current) conversion circuit structure which comprises a BUCK circuit structure, the BUCK circuit structure comprises a first voltage stabilizing capacitor, a second voltage stabilizing capacitor, a first divider resistor and a second divider resistor, wherein the first voltage stabilizing capacitor and the second voltage stabilizing capacitor are arranged in parallel and form an accommodating channel; and the first voltage dividing resistor and the second voltage dividing resistor are arranged in the accommodating channel between the first voltagestabilizing capacitor and the second voltage stabilizing capacitor, so that fingers of an operator cannot touch the first voltage dividing resistor and the second voltage dividing resistor.

Description

technical field [0001] The invention relates to the field of wireless device communication, and further relates to a step-down DC conversion circuit structure with a protective structure and capable of stabilizing output current. Background technique [0002] With the development of electronic technology and the widespread use of consumer electronics equipment, the research and application of high-efficiency DC power conversion (DC-DC) has become an increasingly important direction. With its excellent characteristics, the DC-DC circuit has become the main application object in most consumer electronic devices, replacing the linear power conversion circuit. [0003] The DC-DC circuit is divided into two types of voltage mode and current mode control. The basic principle is that the output of the error amplifier is compared with the triangle wave to generate a PWM signal, and then the PWM signal drives the power tube to achieve conversion. Usually, the buck circuit in the DC-...

Claims

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Application Information

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IPC IPC(8): H02M3/04H02M1/00
CPCH02M3/04H02M1/00Y02B70/10
Inventor 赵丙南
Owner NAWA ELECTRONICS SHANGHAI CO LTD
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