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Design method for solving high-current hot plug problem

A design method and hot-swap technology, applied in the fields of RACK cabinet power supply, server, and data center, which can solve problems such as hot-swap line requirements, reduce inrush current, reduce the difficulty of selection, and facilitate selection. Effect

Inactive Publication Date: 2015-10-14
LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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Problems solved by technology

[0005] In order to solve the above problem of hot-swap line demand for high current demand, this paper proposes a design method to solve high-current hot-swap

Method used

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  • Design method for solving high-current hot plug problem

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Embodiment Construction

[0021] In order to clearly explain the innovation of this article, the design of the 3-way hot-swappable power supply circuit is taken as an example.

[0022] Such as figure 1 As shown, the traditional hot-swap design circuit is composed of SENSE resistor (current sampling resistor), power Mos tube Q1 and hot-swap control IC U1. This topology can cope with the needs of general small current (30A-120A). However, for the demand for higher current (200A-300A, or even higher), it is very difficult to select power devices (sampling resistors, power Mosfet), PCB layout, and heat dissipation. At the same time, since the loss of the high-current system will also increase a lot, when the hot-swap line starts to work in this design, the surge current will be abnormally large, which will bring risks to the stability of the system power supply.

[0023] Such as figure 2 As shown, will figure 1 One output in is changed to figure 2 P12V_A\P12V_B\P12V_C in the three-way output. The c...

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Abstract

The invention provides a design method for solving a high-current hot plug problem, and relates to the field of servers, data centers and RACK power supply. According to the method, input high current is artificially divided into two or more one-way hot plug lines. A time-division peak-avoiding starting mode is adopted for starting each hot plug line. Therefore, very high surge current caused by power-on instant starting is reduced; and meanwhile, the difficulty in material type selection is correspondingly lowered.

Description

technical field [0001] The invention relates to the field of power supply for servers, data centers and RACK cabinets, in particular to a design method for solving high-current hot swapping. Background technique [0002] With the development of cloud computing and big data, many fields have begun to migrate traditional business to the cloud. With the increase of business volume, the amount of data storage and processing in the server system is also increasing. The number and density of GPUs in data center computing nodes is also increasing. In a data center or RACK cabinet, the more the number of single-node GPUs, the greater the current demand for the power supply input voltage 12V. However, in a data center or RACK cabinet, a single node needs a hot-swappable function for maintenance; this inevitably requires a hot-swappable line that supports higher current. [0003] At present, there are more and more servers in the data center, and the performance of a single node is ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
CPCG06F13/4081
Inventor 廖明超
Owner LANGCHAO ELECTRONIC INFORMATION IND CO LTD
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