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Configurable pin reuse method and system applicable to current sensor chip

A current sensor and chip technology, applied in the improvement of basic electrical components and the use of digital measurement technology for measurement, etc., can solve problems such as the inability to meet high-speed overcurrent indication, and achieve the effect of pin multiplexing

Active Publication Date: 2017-11-24
杭州思泰微电子有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned problems that cannot meet the high-speed overcurrent indication, the present invention provides a configurable pin multiplexing method and system applied to current sensor chips, and users can realize pin multiplexing of current sensor chips when using

Method used

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  • Configurable pin reuse method and system applicable to current sensor chip
  • Configurable pin reuse method and system applicable to current sensor chip
  • Configurable pin reuse method and system applicable to current sensor chip

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Experimental program
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Embodiment Construction

[0018] See Figure 4 , Figure 5 A configurable pin system applied to a current sensor chip is shown, which includes a current sensor chip, the current sensor chip is provided with a signal output module 500 to be tested and a low-pass filter 501, and the current sensor chip is also provided with a A voltage processing module 504, an output terminal of the signal output module 500 to be tested is connected to an input terminal of the low-pass filter 501 and an input terminal of the voltage processing module 504, and the output terminal of the low-pass filter 500 is the detection signal output pin 502, The other output terminal of the signal output module 500 to be tested is connected to the other input terminal of the voltage processing module 504, the output terminal of the voltage processing module 504 is a zero current bias voltage signal pin 504, and the voltage processing module 504 includes three comparators 504D , 504F, 504J, wherein the output terminals of the compara...

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PUM

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Abstract

The invention relates to the technical field of current sensor chip pin reuse and particularly relates to a configurable pin reuse method and a system applicable to a current sensor chip, so as to solve the problem that high speed overcurrent indication can not be met and enable current sensor chip pin reuse in the case of use by the user. The system comprises the current sensor chip, and is characterized in that a voltage value outputted by a detection signal output pin of the current sensor chip is processed before output, a zero current bias voltage signal pin of the current sensor chip is connected with an external power supply through a pull-up resistor or is grounded through a capacitor, and when to-be-detected current flowing through the current sensor chip exceeds a threshold, a voltage value curve outputted by the zero current bias voltage signal pin changes indication features.

Description

technical field [0001] The invention relates to the technical field of multiplexing pins of a current sensor chip, in particular to a configurable pin multiplexing method and system applied to a current sensor chip. Background technique [0002] The current sensor chip is a chip that uses magnetic sensor technology to obtain the amplitude and polarity of the current signal flowing through the conductor by sensing the magnetic field formed by the internal (or external) energized conductor of the chip. This chip is widely used in industrial control, home appliances and other fields. Due to the decreasing size of equipment, users hope that while obtaining a current sensor chip with good performance, they also hope that the area occupied by the current sensor chip and its peripheral circuits should be as small as possible on the PCB. [0003] figure 1 The pin definition and application circuit of a typical current sensor chip are shown: 100 is a current sensor chip; 101~104 ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R1/20G01R19/25
CPCG01R1/20G01R19/25Y02D10/00
Inventor 黄海滨徐飞魏昊
Owner 杭州思泰微电子有限公司