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An enabling control circuit

A technology for controlling circuits and circuits, applied to electrical components, electronic switches, pulse technology, etc., can solve problems such as long operation time and board card damage, and achieve the effect of short operation time

Active Publication Date: 2021-10-29
ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an enabling control circuit, which can solve the problem that the operation takes a long time and is easy to cause damage to the board existing in the way of controlling the enabling input end of the VR circuit in the prior art

Method used

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Embodiment Construction

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. 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.

[0023] see figure 2 , which shows a schematic diagram of an enabling control circuit provided by an embodiment of the present invention, which may include a first level adjustment module, a second level adjustment module, and a switching module; the enabling of the switching module and the VR circuit of the board card The input end is connected through a flying wire; one end of the first level adjustment module is connected to the switch module, and the other...

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Abstract

The invention discloses an enabling control circuit, which includes a first level adjustment module, a second level adjustment module and a switching module; the switching module is connected to the enabling input end of the VR circuit of the board through a flying wire; One end of the level adjustment module is connected to the switch module, and the other end is grounded, and is used to change the input level of the control enable input end from high level to low level when the control enable input end of the switch module is connected to the first level adjustment module. level; one end of the second level adjustment module is connected to the switch module, and the other end is connected to the pull-up power supply of the board, which is used to control the enable input when the control enable input of the switch module is connected to the second level adjustment module. The input level of the terminal changes from low level to high level. It can be seen that in the technical solution disclosed in the present application, the operation of removing the resistor R13 is cancelled, only the flying leads used are soldered, the operation time is short, and the damage to the board is avoided to a large extent.

Description

technical field [0001] The invention relates to the technical field of board VR sequence testing, and more specifically relates to an enabling control circuit. Background technique [0002] When performing board card VR (voltage conversion circuit / voltage converter) timing test, due to the circuit delay of multi-level VR and the firmware difference of the control signal, the AC terminal of the power module that supplies power to the board normally cannot be collected accurately. The waveform reflecting the timing sequence of VR. At this time, it is necessary to directly control the EN enable pin (enable input terminal) of VR to measure the timing sequence of powering on and off of VR. [0003] figure 1 It is the EN pin enabling circuit commonly used in VR. Among them, U1 and the right circuit are VR circuits. The existing measurement method is to remove the R13 resistor and replace it with a single-way switch. By adjusting the on and off of the switch, VR can be realized. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03K17/687
CPCH03K17/687
Inventor 齐雪宝
Owner ZHENGZHOU YUNHAI INFORMATION TECH CO LTD
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