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Signal overshoot analysis method and device

An analysis method and analysis device technology, applied in the direction of measuring devices, instruments, measuring electrical variables, etc., can solve the problems of lack of system analysis methods, chip function impact, etc.

Pending Publication Date: 2020-07-07
UBTECH ROBOTICS CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a signal overshoot analysis method and device to solve the serious impact of signal overshoot on the chip function, and the lack of a systematic analysis method to analyze the overshoot parameters when the signal overshoot The problem

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  • Signal overshoot analysis method and device

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0048] In the embodiment of the present invention, the execution subject of the process is the terminal device of the signal overshoot analysis method, and the terminal device includes a server, a computer device, a tablet computer, a smart phone, a router, a switch and other terminal devices with local storage capabilities. The storage module saves the obtained signal overshoot data, so that the administrator can obtain it offline. figure 1 It shows the implementation flow chart of the signal overshoot analysis method provided by the first embodiment of the present invention, which is described in...

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Abstract

The invention is suitable for the technical field of electronic circuits, and provides a signal overshoot analysis method and device. The signal overshoot analysis method comprises the following steps: drawing a voltage oscillogram of a signal; obtaining a capacitance value between a chip port and a ground wire, and obtaining a resonant frequency of a signal according to the voltage oscillogram; calculating an inductance value when the chip port is in short circuit with the ground wire; and calculating an overshoot current value according to the inductance value. According to the invention, detailed and systematic analysis is carried out on signal overshoot parameters, an effective analysis method is provided for signal overshoot, parameters of the buffer circuit are configured according to the overshoot parameters, and the influence of signal overshoot on chip functions is avoided.

Description

technical field [0001] The invention belongs to the technical field of electronic circuits, in particular to an analysis method and device for signal overshoot. Background technique [0002] Overshoot is the first peak or valley above the set voltage—highest voltage for a rising edge and lowest voltage for a falling edge, and undershoot is the next valley or peak. Excessive overshoot can cause protection diodes to operate, leading to premature failure, and excessive undershoot can cause spurious clock or data errors. [0003] Effective suppression of output overshoot is an essential part of power supply products, and in the actual development or use process, switching power supply will be applied to a variety of output devices, and the preset ramp-up time inside the control chip port, and It cannot meet the requirements of various output devices for output overshoot and ramp time, which greatly restricts the versatility and compatibility of switching power supplies. In addi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R19/165
CPCG01R19/16528
Inventor 熊友军王浩
Owner UBTECH ROBOTICS CORP LTD
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