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Method and device for controlling power supply sequence of single board

A technology for controlling veneer and veneer, which is applied in the direction of current supply device, telephone communication, electrical components, etc., can solve the problems of low reliability and high cost, and achieve the effect of solving high cost

Inactive Publication Date: 2009-10-28
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aiming at the above-mentioned problems of high cost and low reliability, the present invention proposes a method and device for controlling the power-on sequence of a single board

Method used

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  • Method and device for controlling power supply sequence of single board
  • Method and device for controlling power supply sequence of single board
  • Method and device for controlling power supply sequence of single board

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Embodiment Construction

[0035] figure 2 It is a simplified circuit schematic diagram of the slow start of the power supply often used in the communication equipment business board. The slow start circuit adopts the -48V power supply of discrete devices, which has the characteristics of simple circuit and low cost. It utilizes the switching characteristics of power MOS tubes to achieve relatively accurate control of the mature technology of transient current, and is widely used in the industry. The slow start circuit is not affected by the parasitic capacitance characteristics of the MOS tube, and is not affected by the discreteness caused by the different manufacturers and batches of the MOS tube. figure 2 The left side is the power input part, which is the power input port of the board, and the output terminal on the right side is connected to the power conversion device of the board.

[0036] figure 2 The voltage at point G controls the opening of the MOS tube. The formula for calculating the ...

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Abstract

The invention relates to the connection between a mother board and a single board in communication transmission equipment, and particularly discloses a method and a device for controlling the power-on sequence of the single board. The device for controlling the power-on sequence of a single board of the present invention is specifically: when the motherboard is connected to M single boards, the N first pins of each slot in the motherboard are connected to the Nth pins of the corresponding single board respectively. A socket is connected, and the second pin in the motherboard is connected with the second socket in the single board; wherein for M single boards, the resistance corresponding to the first pin connected to one end of the power supply is selected to be The resistance values ​​are not all the same, thus causing the power supply slow start circuits of the M single boards to start at different times. The invention also correspondingly provides a method for controlling the power-on sequence of a single board. The invention effectively solves the problems of high cost caused by using a set of circuits alone to control the power-on sequence of the single board in the prior art solution and low reliability caused by centralized control by software.

Description

technical field [0001] The invention relates to the connection between a mother board and a single board in communication transmission equipment, and particularly discloses a method and a device for controlling the power-on sequence of the single board. Background technique [0002] A communication system usually consists of different subsystem racks and subracks. Each subrack includes a motherboard, at least one main control board, one or more power supplies, and various service boards. Different single boards are usually connected by a motherboard, and power is provided by a power bus to each main control board and the slot of the motherboard where each single board is located. [0003] If the module needs to be replaced during system operation, the hot swap requirement needs to be considered. Hot swapping, also known as hot swapping (Hot Insertion or Live Insertion), refers to safely inserting a single board into a running system, or safely pulling it out from a running...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M19/00
Inventor 崔秀国李晓东
Owner HUAWEI TECH CO LTD