Server VR chip OCP point setting method and control circuit

A control circuit and switch control circuit technology, applied in the server field, can solve the problems of unable to trigger the VROCP protection mechanism, no longer functioning of the protection circuit, and failure of the OCP function, and achieve the effect of reliable design principle, simple structure, and improved overcurrent protection

Inactive Publication Date: 2021-03-16
INSPUR SUZHOU INTELLIGENT TECH CO LTD
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  • Description
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  • Application Information

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Problems solved by technology

But in actual use, in different application scenarios, the number of loads on the VR backend is not fixed. The above setting method will cause a problem. The current value may not exceed the set OCP point, and then the OCP protection mechanism of VR cannot be triggered. In this case, the OCP function will fail and can no longer protect the circuit

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  • Server VR chip OCP point setting method and control circuit
  • Server VR chip OCP point setting method and control circuit
  • Server VR chip OCP point setting method and control circuit

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Embodiment Construction

[0064] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0065] figure 2 It is an application schematic diagram of the method for setting the OCP point of the server VR chip according to an embodiment of the present invention.

[0066] In this embodiment, the method for setting the OCP point of the server VR chip is used when N loads are configured at the back end of the server VR chip.

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Abstract

The invention provides a server VR chip OCP point setting method and a control circuit, which are used when N loads are configured at the rear end of a server VR chip, can dynamically adjust the OCP points of the server VR chip according to in-place signals of the loads at the rear end of the server VR chip, and specifically comprises the following steps: configuring a resistor access circuit foreach of the N loads, wherein each resistor access circuit comprises a setting resistor accessed between the OCP pin of the server VR chip and the ground and a switch control circuit for controlling the conduction and disconnection of the circuit where the setting resistor is located, and the control end of the switch control circuit of each resistor access circuit is connected with an in-place signal of a corresponding load. The method and the circuit are used for improving the overcurrent protection of the server circuit.

Description

technical field [0001] The invention relates to the field of servers, in particular to a method for setting an OCP point of a server VR chip and a control circuit. Background technique [0002] VR (Voltage Regulator, voltage regulator) is a chip commonly used in servers. It converts the power input by the PSU (Power Supply Unit, power supply module) into a power supply with a fixed voltage value used by the back-end load. The VR chip usually has OCP (Over Current Protection, over-current protection) function. When the circuit at the back end of the VR is short-circuited and the current is too large due to a fault, the output is cut off to prevent serious failures of the server from burning the board. [0003] The OCP point of the VR chip, that is, the current value that triggers the overcurrent protection function, is set by a resistor connected between the OCP pin of the VR chip and the ground, and different resistance values ​​correspond to different OCP points. For examp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/08H02H3/05
CPCH02H3/006H02H3/05H02H3/08
Inventor 何业缘
Owner INSPUR SUZHOU INTELLIGENT TECH CO LTD
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