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DC 5V output power supply

A technology of output power supply and output rectification, which is applied in the direction of converting AC power input to DC power output, output power conversion device, electrical components, etc., which can solve the problems of limited equipment space, remote control switch of power supply, etc., to achieve small size, Easy installation and simple circuit

Pending Publication Date: 2020-09-01
TIANJIN RAILWAY SIGNAL
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  • Abstract
  • Description
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Problems solved by technology

[0003] At the same time, due to the limited space of the equipment, there is an urgent need for a power supply with small size and high power, and the existing power supply cannot be remotely controlled on and off. At the same time, it must have the advantages of light weight, high efficiency, low heat generation, convenient use, and stable performance. The power supply is designed according to the above requirements

Method used

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  • DC 5V output power supply
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Embodiment Construction

[0019] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0020] The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0021] In order to solve the shortage of the existing power supply, this application provides a DC 5V output power supply, such as image 3 As shown, it includes an input rectification module U1, a DC / DC module U2, an output rectification filter circuit unit and a hot-swappable circuit unit connected in sequence, and the DC / DC module U2 and optocoupler U8 form an external control port.

[0022] The model of the input rectification module U1 is FARM1C21, and the model of the DC / DC module U2 is V300C5C100BL, wherein,

[0023] The N pin of the input rectifier module U1 is connected to the 220V-L terminal through the varistor Z1, the L pin is connected to the 220V-N, the + pin is connected ...

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Abstract

The invention provides a DC 5V output power supply, which comprises an input rectifier module U1, a DC / DC module U2, an output rectifier filter circuit unit and a hot plug circuit unit which are connected in sequence, and the DC / DC module U2 and an optocoupler U8 form an external control port. Due to the adoption of the technical scheme, the controllable small-type DC 5V output power supply is simple in circuit, small in size and stable and controllable in output; and a modular circuit is adopted, and the functions of input overvoltage and overcurrent, output current-limiting protection, output short-circuit protection and the like are achieved. Remote control of the power switch is realized. A board card structure is adopted, the board card can be directly inserted into a hump control system board card cage, installation is convenient, and the size is small.

Description

technical field [0001] The invention belongs to the technical field of switching power supplies, and in particular relates to a DC 5V output power supply, which is used in railway system power supply equipment. The main purpose is to provide stable DC 5V for electrical equipment. The power module has multiple protection functions and can meet requirements of different applications. Background technique [0002] With the rapid development of power electronics technology, the workload of the railway hump field is increasing, the power consumption of the hump system board is large, and the power consumption of the intelligent control board is also increasing sharply. Such equipment is inseparable from reliable power supply. [0003] At the same time, due to the limited space of the equipment, there is an urgent need for a power supply with small size and high power, and the existing power supply cannot be remotely controlled on and off. At the same time, it must have the advan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/00
CPCH02M7/003
Inventor 栾凤仁鞠宏伟杨怡杨瑜郑娜陈新杨建
Owner TIANJIN RAILWAY SIGNAL
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