A power supply feedback apparatus

一种反馈装置、电源的技术，应用在输出功率的转换装置、电气元件、调节电变量等方向，能够解决功率密度低、电源反馈装置不能从根本上解决欠压问题等问题，达到电路简单、解决电压跌落问题、兼顾功率密度和成本的效果

Active Publication Date: 2014-02-19
EMERSON NETWORK POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a power supply feedback device in the prior art that can not fundamentally solve the problem of undervoltage and has low power density, and provide a device that can fundamentally solve the problem of undervoltage and ensure power Density Power Feedback Device

Method used

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Embodiment Construction

[0030] figure 1 is a functional block diagram of the power feedback device according to the first embodiment of the present invention. Such as figure 1 As shown, the power feedback device 100 of the present invention includes: a main feedback module 150 , an auxiliary feedback module 160 and a feedback control module 140 . The power supply 200 includes a converter module 110 , a main output branch 120 and an auxiliary output branch 130 .

[0031] The converter module 110 is used to receive an input voltage and convert the input voltage into a main output voltage and an auxiliary output voltage. For example, the converter module 110 may be a DC-DC converter, an AC-DC converter, or a forward converter or a flyback converter. Various transducers known in the art can be used in the present invention. The main output branch 120 receives the main output voltage from the main output terminal of the transformer module 110 and provides it to a main load (not shown). The auxiliary ...

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Abstract

The invention relates to a power supply feedback apparatus comprising a primary feedback module, an auxiliary feedback module and a feedback control module. The primary feedback module is used for sampling a voltage of a main output branch of the power supply and outputs a primary feedback voltage to the feedback control module. The auxiliary feedback module is used for reducing the primary feedback voltage when a voltage of an auxiliary output branch of the power supply decreases. The feedback control module is used for controlling the power supply to raise power output when the primary feedback voltage decreases so as to make the voltage of the auxiliary output branch back to normal. The circuit of the power supply feedback apparatus of the invention is simple. When circuit of the power supply feedback apparatus of the invention is implemented, a voltage dropping problem is easily solved, and power density and costs are also taken into consideration.

Description

technical field [0001] The invention relates to the field of switching power supplies, more specifically, to a power supply feedback device. Background technique [0002] Power supply is a very basic and very important part of electronic circuits. A common power supply has one main output branch, multiple auxiliary output branches and one main output branch feedback circuit. Therefore, there is only a feedback link in the main output branch, so it has a good load response speed, but because there is no feedback link in the auxiliary output branch, the load response speed is very poor, and undervoltage will occur, which will affect the normal operation of the circuit. Work. [0003] Aiming at this technical problem, the existing solution is to increase the number and capacity of capacitors in the auxiliary output branch. Relying on the capacity of a large enough capacitor, the auxiliary output branch has a long enough holding time, thereby reducing the probability of under...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/335
CPCH02M2001/0003H02M3/33507H02M2001/0025H02M3/33561H02M1/0003H02M1/0025
Inventor 吕华军张红波贾淑文
Owner EMERSON NETWORK POWER CO LTD
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