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Circuit and method for shortening switching dead time of network card power supply

A power supply switching and dead time technology, applied in circuit devices, emergency protection circuit devices, electrical components, etc., can solve the problems of long power supply switching dead time, shortening switching dead time, and reducing production costs, so as to shorten the switching time. Dead time, fast detection of voltage changes, effect of reducing production cost

Active Publication Date: 2020-06-26
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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Problems solved by technology

[0007] The purpose of the present invention is to provide a circuit and method for shortening the dead time of network card power supply switching, aiming to solve the problem of too long dead time of power supply switching in the prior art, realize shortening the dead time of switching, and reduce production costs at the same time

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  • Circuit and method for shortening switching dead time of network card power supply
  • Circuit and method for shortening switching dead time of network card power supply
  • Circuit and method for shortening switching dead time of network card power supply

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Embodiment Construction

[0023] In order to clearly illustrate the technical features of the present solution, the present invention will be described in detail below through specific implementation methods and in conjunction with the accompanying drawings. The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and arrangements of specific examples are described below. Furthermore, the present invention may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. It should be noted that components illustrated in the figures are not necessarily drawn to scale. Descriptions of well-known components and processing techniques and processes are omitted herein to avoid unnecessarily lim...

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Abstract

The invention provides a circuit and a method for shortening the switching dead time of network card power supply. According to the invention, a main power supply in-place state detection unit is removed, a switching control line is added, and a control source is replaced, so that time delay in a signal transmission process can be solved, and the voltage change is rapidly detected. The switching dead time is shortened and the production cost is reduced by controlling the switching-on speed of the NMOS and the PMOS during switching. In addition, the situation in which a network card leaks electricity in an S5 state when an NCSI cable is not connected is avoided by using the P3V3_ DUAL as a pull-up source of a network card chip.

Description

technical field [0001] The invention relates to the technical field of server network card power supply, in particular to a circuit and method for shortening the switching dead time of network card power supply. Background technique [0002] With the development of cloud computing applications, the demand for servers is also increasing. In order to enhance the functions of servers, PCIE adapter cards are often used to transfer multiple external cards with different functions and performances through the motherboard PCIE, such as gigabit Network card, 10 Gigabit network card, SAS card and RAID card, etc. By matching different sub-cards, the server can meet the application requirements of different users, and can meet the customer's demand for the best cost performance of server products. [0003] In order to improve the performance of the server and reduce the power consumption and PUE value of the server, the general network card will support function switching in S0 and S5...

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Application Information

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IPC IPC(8): H02J9/06H02M1/38H02H7/20H02H3/32
CPCH02H3/32H02H7/20H02J9/061H02M1/38
Inventor 刘溪张松涛
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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