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Voltage regulation method, pre-stabilized voltage power circuit and system

A power supply circuit and pre-regulated technology, applied in the field of electronics, can solve the problems of low output efficiency, low output voltage accuracy, complex circuit structure, etc., and achieve high-efficiency output, improve voltage output accuracy, and reduce switching frequency.

Active Publication Date: 2015-04-08
HUAWEI DIGITAL POWER TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing DC stabilized power supply mainly adopts a completely isolated circuit structure and a non-isolated fully direct circuit structure. Among them, the circuit structure of the isolated structure is complex, the output efficiency of the power supply is low, and the output voltage accuracy is low.

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Embodiment Construction

[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0024] Embodiments of the present invention provide a pre-regulated power supply circuit, such as figure 1 As shown, including, step-up unit 11 and step-down unit 12, wherein:

[0025] The boost unit 11 includes a positive line input terminal 111, a negative line input terminal 112, a first positive line output terminal 113 corresponding to the positive line input terminal 111, and a first negative line output terminal 114 corresponding to the negative line in...

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Abstract

A voltage adjustment method, and a voltage pre-regulator power supply circuit and system, that implements highly-efficient output of a power supply in a quasi straight-through state and increases voltage output precision of a circuit. The voltage adjustment method includes receiving a to-be-adjusted voltage through a positive wire input end and a negative wire input end; changing, in a control mode in which a connection time is fixed and a disconnection time is adjusted, a duty cycle for the to-be-adjusted voltage to obtain a primary adjusted voltage; and changing, in a control mode in which a disconnection time is fixed and a connection time is adjusted, a duty cycle for the primary adjusted voltage to obtain an output voltage. The present disclosure is applied to a non-isolated direct-current quasi straight-through pre-regulator power supply.

Description

technical field [0001] The invention relates to the field of electronics, in particular to a voltage regulation method, a pre-stabilized power supply circuit and a system. Background technique [0002] The power module (power module) is a power supply that can be directly mounted on the printed circuit board. The simulated load provides power. Generally, such modules are called point-of-load power supply systems or point-of-use power supply systems. Due to the many advantages of the modular structure, the module power supply is widely used in communication fields such as switching equipment, access equipment, mobile communication, microwave communication, optical transmission, routers, automotive electronics, aerospace, etc. The module power supply has isolation function, strong anti-interference ability, built-in protection function, and is easy to integrate. In application scenarios requiring voltage conversion, the power module includes an AC converter or a DC converte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02M3/156H02M1/00
CPCH02M3/1582H02M2001/007H02M3/1584H02M3/156H02M1/007
Inventor 朱品华王恒彪曹文宗
Owner HUAWEI DIGITAL POWER TECH CO LTD