IIC leakage current detection circuit, detection method and test tool

Abstract

The invention discloses an IIC (Inter-Integrated Circuit) leakage current detection circuit, a detection method and a test tool, and the IIC leakage current detection circuit comprises a test unit, a switching unit and a tool interface, the tool interface is used for connecting a target product to be tested, and the target product communicates based on an IIC protocol; the test unit is used for providing a driving voltage for the switching unit and providing a working voltage and a test voltage for the target product through the tool interface; the switching unit is used for switching the working voltage of the target product into the test voltage when the test unit provides the driving voltage, and disconnecting the target product from the IIC end of the tool interface; and the test unit is also used for reading the leakage current of the IIC end after the switching unit switches the working voltage of the target product into the test voltage and disconnects the tool interface and the IIC end of the target product. When the target product is the camera module chip, the IIC leakage current test can be carried out when the camera module chip is subjected to the lightening test, and the test efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of testing, in particular to an IIC leakage current detection circuit, a detection method and a testing tooling. Background technique [0002] Currently, the camera module needs to be inspected during the production process of the camera module. When the existing methods are used for monitoring, the conventional shooting performance is generally detected, but the IIC (Inter-Integrated Circuit, integrated circuit bus) leakage current of the camera module cannot be detected. However, there are defects in this aspect in existing products. If a single station is designed for leakage current detection, the production and testing efficiency will be reduced, and there is no corresponding existing detection means at present. [0003] Therefore, there is an urgent need for a test current that can simultaneously light up the camera module and test the IIC leakage current of the camera module to ensure high-efficiency...

AI Technical Summary

Problems solved by technology

When the existing method is used for monitoring, it generally detects its conventional shooting performance, but cannot detect the IIC (Inter-Integrated Circuit, integrated circuit bus) leakage current of the camera module.

However, there are already defects in this aspect in existing products. If a single station is designed for leakage current detection, the production and testing efficiency will be reduced, and there is no corresponding existing detection method at present.

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