Power-on and power-off control system, method and device for service board of frame type equipment and main control board

Abstract

The invention provides a power-on and power-off control system for a service board of frame type equipment. The system comprises a main control board, a main power supply and the service board comprising a power supply slow starting module, a programmable logic module, an auxiliary power supply and at least one secondary power supply, the auxiliary power supply is connected with the programmable logic module and is used for supplying power to the programmable logic module, and the main control board is respectively connected with the power supply slow starting module and the programmable logicmodule. The main control board controls the power supply slow starting module to connect or disconnect the main power supply and a secondary power supply in the service board; the main control boardcontrols the editable logic module to control the power-on and power-off and power-on and power-off time sequence of the secondary power supply of the business board; the power-on and power-off control of the service board in different application scenarios such as main control restart, continuous working or power-off of the service board, main control pull-out and power-off of the service board can be realized, and the power-on and power-off time sequence of the secondary power supply in the service board can be controlled.

Description

technical field [0001] The present application relates to the technical field of power-on and power-off control of frame-type equipment, and in particular to a system, method, device and main control board for power-on and power-off control of a business board of frame-type equipment. Background technique [0002] A framed device includes a main control board and a service board (also called a plug-in board). The service board is a board that implements various network services, security services, and application functions. The main control board is responsible for the initialization and management of the service board. The power supply from the main power supply to the service board is controlled by the main control board. Generally, there is a power supply slow-start module on the service board. There is a power switching device on the power slow-start module. The main control controls the switching on the power slow-start module through the I2C bus The power on and off of...

AI Technical Summary

Problems solved by technology

Some solutions in the prior art control the power-on sequence of the secondary power supply in the service board through a separate integrated IC, but the number of power supplies that can be controlled by this solution is small, and an additional power control integrated IC is required, which increases the cost , and the power-off sequence cannot be controlled. There is also a solution to add a programmable logic module CPLD (Complex Programmable Logic Device) to the service board. The CPLD is connected to the power supply slow-start module in the service board. The Power_good signal sent by the slow start module controls the CPLD to control the power on and off of the secondary power supply in the service board

Compared with the first integrated IC solution, the number of secondary power sources that can be controlled by this solution has increased a lot. However, since the power-off control of this solution is triggered by the falling edge of the Power_good signal reported by the power supply slow-start module, the Power_good It takes only 6ms from the falling edge to the time when the main power supply drops to 0V. During this period, only part of the power supply sequence control can be realized. The power supplies that have not completed the sequential power-off within 6ms will be powered off disorderly. It can be seen that the existing technology still exists. The following disadvantages: First, it cannot meet the power-on and power-off requirements of the service board in some application scenarios. For example, when the main control is restarted or the main control is pulled out, some scenarios require the service board to continue to work, and some scenarios require the service board to be powered off.

Secondly, it is impossible to control the power-off sequence of all secondary power supplies in the service board

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