UUT power supply management method and ID identification circuit thereof

Abstract

The invention relates to a UUT power supply management method and an ID identification circuit thereof. The UUT power supply management method comprises the following steps: 1) the ID number of a module UUT to be tested is read and whether the ID number is correct is judged, and a static test is conducted to the module UUT to be tested if the ID number is correct; and the power supply of an adapter is cut off and fault handling is conducted if the ID number is incorrect; 2) if the static test indicates that the condition of the module UUT is normal, power is supplied to the module UUT to be tested and an ATE automatically tests the UUT; and if the static test indicates that the condition of the module UUT is abnormal, fault handling is conducted; and 3) the electrical characteristics and the ID number of the module UUT to be tested are monitored during the automatic testing, the monitoring to the electrical characteristics and the ID number of the module UUT to be tested is ended if the electrical characteristics and the ID number of the module UUT to be tested are incorrect, the power is cut off and the testing result is output. The invention has the advantages that the impacts on the UUT caused by faults such as power supply errors or UUT circuit abnormality itself are avoided, the security of the UUT is improved and the ATE is protected.

Description

technical field [0001] The invention relates to a power supply management method for protecting a module under test (UUT, Unit Under Test) and an automatic test equipment ATE during the working process of an automatic test equipment (ATE, Automatic Test Equipment) and an ID identification circuit for realizing the method . Background technique [0002] At present, the automatic test system does not protect the UUT or only do some simple overcurrent and overvoltage protection designs on the circuit during the working process. Because when designing an automatic test system, the automatic test strategy for UUT is the design focus, but the protection of UUT usually does not attract enough attention. [0003] When the UUT is performing automatic testing, it is easy to have the problem of power supply error caused by inserting the module wrongly and causing the power supply to be connected to the bus. Due to the lack of sufficient consideration of the operator's mistakes and th...

AI Technical Summary

Problems solved by technology

[0003] During the automatic test of UUT, it is easy to have the problem of power supply error caused by inserting the module wrongly and causing the power supply to connect to the bus, etc.

The protection of UUT and ATE is inefficient and one-sided due to insufficient consideration of operator error and insufficient consideration of adapter design when designing ATE

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