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Power supply hot swap control circuit and system

A technology of control circuit and switching power supply circuit, applied in the field of communication, can solve the problems of increasing the cost of the whole machine, high price of the special control IC for hot swap, etc., and achieve the effects of low reliability, low cost, and reduced equipment cost.

Active Publication Date: 2016-08-03
RUIJIE NETWORKS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the prior art, when multiple boards are hot-swappable in the entire system, each board needs to use a set of figure 1 The circuit shown, and because the price of the special control IC for hot-swapping is more expensive, the cost of the whole machine will eventually increase significantly

Method used

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  • Power supply hot swap control circuit and system
  • Power supply hot swap control circuit and system
  • Power supply hot swap control circuit and system

Examples

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Embodiment Construction

[0018] figure 2 It is a schematic diagram of the circuit structure of Embodiment 1 of the power supply hot swap control circuit of the present invention, as shown in figure 2 As shown, this embodiment provides a power supply hot swap control circuit, which may specifically include a set of switching power supply circuits 1 and multiple sets of switching circuits 2 . Wherein, the input end of each set of switching circuit 2 is connected with the output end of switching power supply circuit 1, and the output end of each set of switching circuit 2 is respectively connected with a first power connector 3, and the first power connector 3 can be set Connectors on the power backplane. The switching power supply circuit 1 can serve multiple sets of switching circuits 2 at the same time. It is used to obtain the power supply voltage from the switching power supply located outside the power backplane, and output the driving voltage to multiple sets of switching circuits 2 respectivel...

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Abstract

The invention provides a hot-plug control circuit and system of a power supply. The hot-plug control circuit of the power supply comprises a set of switch power supply circuit and a plurality of sets of switch circuits, wherein each set of switch circuits is connected with a first power supply connector; the switch power supply circuit is used for acquiring power supply voltage from a switch power supply and outputting driving voltage to each of the plurality of sets of the switch circuits; and the switch circuit is used for controlling a hot-plug board where the second power supply connector is placed to power on and power off according to a connection state between the first power supply connector and a corresponding second power supply connector and the driving voltage. The invention also provides a hot-plug control system of the power supply. According to the invention, the equipment cost can be reduced on the basis of guaranteeing the reliability.

Description

technical field [0001] The invention relates to communication technology, in particular to a power supply hot swap control circuit and system. Background technique [0002] In order to meet the needs of configuration flexibility, communication devices such as routers are usually implemented with a replaceable plug-in card structure, and it is required that when replacing some boards, the operation of the whole machine cannot be affected, which requires the realization of each line card or management board. hot swap. When the board is hot-swapped, the power supply must be uninterrupted first, so as not to affect the power supply to other boards. In order to stabilize the power supply of each board, a large capacitor is usually added to the input terminal. If the board does not use current limiting measures, and the board is hot-swapped directly with capacitors, these capacitors will generate a large charging current, directly The power supply voltage of the entire system is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/735
Inventor 陈楚
Owner RUIJIE NETWORKS CO LTD
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