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Floating type constant voltage circuit

A constant voltage circuit, floating technology, applied in the direction of adjusting electrical variables, control/regulating systems, instruments, etc., can solve the problems of slow response, real-time monitoring of output voltage, unfavorable voltage stable output, etc.

Active Publication Date: 2020-09-15
SHENZHEN KIWI MICROELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For the floating constant voltage circuit, the existing output sampling circuit can only work for a period of time after the input is disconnected, and cannot monitor the change of the output voltage in real time when the input is disconnected, which is not conducive to the stable output of the voltage. When the load increases the current Response is slow when requested

Method used

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  • Floating type constant voltage circuit
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Embodiment Construction

[0051] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention.

[0053] figure 1 It is a circuit block diagram of a floating constant voltage ci...

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Abstract

The invention relates to a floating type constant voltage circuit comprising an input switch module used for controlling voltage input; an output module connected with the input switch module and theground and used for outputting voltage; a first sampling module connected with the output module and used for sampling the output voltage to obtain a first sampling voltage, wherein the first samplingmodule comprises a first voltage dividing unit, one end of the first voltage dividing unit is connected with the output module, and the other end is grounded; the first voltage dividing unit comprises two or more than two first voltage dividing resistors which are connected in series; and a control module connected with the input switch module and the output module, also connected with a first node between the two first divider resistors, and used for receiving the first sampling voltage and controlling the input switch module. The floating type constant voltage circuit can continuously sample the output voltage when the input is disconnected, so that the voltage is output constantly, and the response speed is improved.

Description

technical field [0001] The invention relates to the technical field of voltage regulation, in particular to a floating constant voltage circuit. Background technique [0002] In the constant voltage circuit, in order to prevent the electromagnetic interference caused by the common ground impedance circuit coupling, the floating structure is generally adopted, and the ground pin of the control module is connected to the reference ground instead of the actual ground, that is, the floating ground technology is adopted. For the floating constant voltage circuit, the existing output sampling circuit can only work for a period of time after the input is disconnected, and cannot monitor the change of the output voltage in real time when the input is disconnected, which is not conducive to the stable output of the voltage. When the load increases the current Response is slow when requested. Contents of the invention [0003] Based on this, in order to solve the above problems, it...

Claims

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Application Information

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IPC IPC(8): G05F1/56
CPCG05F1/56
Inventor 金伟祥张波蓝舟
Owner SHENZHEN KIWI MICROELECTRONICS CO LTD
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