Bipolar voltage detection circuit and server
A voltage detection circuit and bipolar technology, applied in the field of bipolar voltage detection circuits and servers, can solve the problems of board card leakage, voltage signal failure, undervoltage, etc., to ensure accuracy, expand sampling range and sampling characteristics Effect
Pending Publication Date: 2022-05-13
SUZHOU LANGCHAO INTELLIGENT TECH CO LTD
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Problems solved by technology
[0002] With the development of the server system, various types of boards are integrated in the system. The power supply of each board and the number of voltage signal crossing levels between boards are more and more, so the sampling of voltage signals has been improved. High requirements, especially in the case of high-speed signal transmission, if the power rail of the voltage signal and the power rail of the voltage sampling chip are not in the same reference plane and the transmission signal is a signal in the negative direction, it may cause the voltage of the voltage signal Sampling fails, which may cause leakage between boards, undervoltage, large signal fluctuations, loss of level sampling signals, etc., which seriously affects the management and monitoring of the server system
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[0023] The core of the invention is to provide a bipolar voltage detection circuit and server, which expands the sampling range and sampling characteristics of the output voltage of the sampling signal power supply, and ensures the accuracy of voltage sampling.
[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, 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 embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0025] Please refer to figure 1 , figure 1 It is a schematic structural diagra...
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The invention discloses a bipolar voltage detection circuit and a server, the bipolar voltage detection circuit is applied to a sampling signal power supply, the bipolar voltage detection circuit comprises a voltage division circuit, a summing circuit, an amplification circuit and a voltage sampling chip, and the voltage division circuit can divide the output voltage of the sampling signal power supply to obtain a first voltage; the summing circuit superposes a summing voltage on the first voltage value to obtain a second voltage, the second voltage is a positive voltage, the amplifying circuit amplifies the second voltage to obtain a third voltage, and finally the voltage sampling chip obtains an output voltage of the sampling signal power supply according to the third voltage. Therefore, the power supply rail of the amplifying circuit and the power supply rail of the voltage sampling chip are in the same reference plane, the output voltage is positive voltage, the polarity of the voltage is normalized, positive voltage and negative voltage bipolar voltage signals output by the sampling signal power supply are detected, the sampling range and the sampling characteristics of the output voltage of the sampling signal power supply are expanded, and the sampling accuracy is improved. And the accuracy of voltage sampling is ensured.
Description
technical field [0001] The invention relates to the field of voltage detection, in particular to a bipolar voltage detection circuit and a server. Background technique [0002] With the development of the server system, various types of boards are integrated in the system. The power supply of each board and the number of voltage signal crossing levels between boards are more and more, so the sampling of voltage signals has been improved. High requirements, especially in the case of high-speed signal transmission, if the power rail of the voltage signal and the power rail of the voltage sampling chip are not in the same reference plane and the transmission signal is a signal in the negative direction, it may cause the voltage of the voltage signal Sampling fails, which may cause leakage between boards, undervoltage, large signal fluctuations, loss of level sampling signals, etc., seriously affecting the management and monitoring of the server system. Contents of the inventi...
Claims
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Login to View More IPC IPC(8): G01R31/28
CPCG01R31/28
Inventor 石波
Owner SUZHOU LANGCHAO INTELLIGENT TECH CO LTD