Misplug prevention power supply, misplug prevention load and pluggable power supply misplug prevention system

Abstract

The invention relates to the communication technology. In an existing misplug prevention method, a mainboard of a power supply load requires to be electrified or a shape of a power supply interface needs to be changed. In the invention, the above problems are solved and a misplug prevention power supply, a misplug prevention load and a pluggable power supply misplug prevention system are provided.The misplug prevention power supply includes a power supply unit, a secondary control power supply output end, two power supply output ends, a control unit, a first power supply enable signal input end, a second power supply enable signal input end, and an in-position signal input end. The power supply output end and the secondary control power supply output end are connected with the power supply unit, and the in-position signal input end is connected to the control unit. If voltages output by the two power supply output ends are consistent, the first power supply enable signal input end andthe second power supply enable signal input end are in a short circuit state and are connected to the control unit, otherwise, the first power supply enable signal input end and the second power supply enable signal input end are connected to the control unit respectively. The power supply, the load and the system have advantages that a mainboard is not burnt and the power supply, the load and the system are suitable for a pluggable power supply system.

Description

technical field [0001] The invention relates to communication technology, in particular to a technology for preventing wrong insertion of a pluggable power supply in the field of communication. Background technique [0002] In electronic products, for communication equipment with reliability requirements, there is usually a need for dual power supply hot backup and hot-swappable power supply replacement; for standardization considerations (compatibility and scalability), and in the structure Restrictions, usually the power modules are of standard size, and the dimensions of power modules with different output specifications (the output power voltage may be different, different power, etc.) are the same. If the whole machine is inserted into a mismatched power module by mistake, it will easily cause damage to the main board of the device. [0003] Existing anti-wrong insertion solutions are generally divided into the following two types: [0004] Option 1: Set and read the p...

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Problems solved by technology

[0005] Solution 2: Prevention through structure, such as small changes to the power interface shells of different output specifications to achieve differentiation. If it is not a matching power interface, the physical structure restriction will be implemented during the insertion process, making it impossible to insert. This method has the following defects: 1) The power interface shell is not universal, and may produce a lot of structural types (if a more comprehensive anti-wrong insertion is to be achieved, each power supply specification needs a power interface shell), which increases the difficulty of inventory and assembly identification. To manage the problem of increased costs and cost; 2) For the production stage or debugging stage, it is impossible to prevent wrong insertion when directly operating the bare board

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