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Digital power control circuit and method

A technology of power supply control circuit and switching power supply circuit, which is applied in the direction of control/adjustment system, electrical components, and adjustment of electrical variables, etc., which can solve the problems of low output voltage accuracy and poor stability, and achieve the effect of improving accuracy and stability

Active Publication Date: 2019-10-01
MOSO POWER SUPPLY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it is widely used in the small and medium power switching power supply market; however, the traditional switching power supply is easily affected by the environment, the output voltage accuracy is low, and the stability is poor

Method used

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Embodiment Construction

[0050] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiment of the application. Obviously, the described embodiment is only 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 making creative efforts belong to the scope of protection of this application.

[0051] The terms "first", "second" and the like in the specification and claims of the present application and the above drawings are used to distinguish different objects, rather than to describe a specific order. Furthermore, the terms "include" and "have", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process...

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Abstract

An embodiment of the invention discloses a digital power control circuit and method. The digital power control circuit includes a switching power supply circuit, a voltage comparison circuit, a voltage detection circuit and a microprocessor. A first output end of the switching power supply circuit is connected to a first input end of the voltage comparison circuit and an input end of the voltage detection circuit, a second input end of the voltage comparison circuit is connected to a first input end of the microprocessor, and an output end of the voltage comparison circuit is connected to a feedback control terminal of the switching power supply circuit. In the embodiment of the invention, the output voltage of the switching power supply circuit can be dynamically adjusted through a reference voltage signal outputted by the microprocessor, and therefore, the stability and accuracy of the output voltage are improved.

Description

technical field [0001] The present application relates to the technical field of digital power supply control circuits, in particular to a digital power supply control circuit and method. Background technique [0002] Switching power supply is a kind of power supply that uses modern power electronic technology to control the time ratio of switching tube on and off to maintain a stable output voltage. Switching power supply is generally composed of pulse width modulation (Pulse Width Modulation, PWM) control switching tube, such as Forward switching power supply and flyback switching power supply. At present, it is widely used in the small and medium power switching power supply market; however, the traditional switching power supply is easily affected by the environment, and the output voltage accuracy is low and the stability is poor. Contents of the invention [0003] The embodiment of the present application provides a digital power supply control circuit, which can dy...

Claims

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Application Information

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IPC IPC(8): H02M1/00H02M3/335
CPCH02M1/00H02M3/33515H02M3/33523H02M1/0012H02M1/0016
Inventor 蒋阳王志勇俞建悦顾永德
Owner MOSO POWER SUPPLY TECH