US 10,761,111 B2Granted

System and method for control of automated test equipment contactor

AssigneeTexas Instruments Incorporated

InventorsArun Adoni, Suvadip Banerjee, Sreeram Subramanyam Nasum, Prajkta Vyavahare

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Abstract

A system includes a controller for automated test equipment (ATE) contactor to interface with a device under test (DUT) including a power converter having a primary and secondary side, each side has an input/output (I/O) pin. The controller causes the ATE contactor to apply a load current on the secondary side of the power converter at a first value and vary the load current to a second value. The contactor receives first and second indications, at the first and second load currents, of a voltage on the primary side I/O pin, a voltage on the primary side of the power converter, an input current on the primary side of the power converter, a voltage on the secondary side I/O pin, and a voltage on the secondary side of the power converter. The controller determines a primary and secondary side ATE contactor resistances based on the first and second indications.

Claims18

Dependent claims

A system comprising:

a controller for an automated test equipment (ATE) contactor configured to interface with a device under test (DUT) comprising a power converter having a primary side and a secondary side, each of the primary and secondary sides additionally comprising an input/output (I/O) pin, the controller configured to:
cause the ATE contactor to apply a load current on the secondary side of the power converter at a first value;
receive a first indication from the ATE contactor of a voltage on the primary side I/O pin, a voltage on the primary side of the power converter, an input current on the primary side of the power converter, a voltage on the secondary side I/O pin, and a voltage on the secondary side of the power converter when the load current is the first value;
cause the ATE contactor to vary the load current to a second value;
receive a second indication from the ATE contactor of the voltage on the primary side I/O pin, the voltage on the primary side of the power converter, the input current on the primary side of the power converter, the voltage on the secondary side I/O pin, and the voltage on the secondary side of the power converter when the load current is the second value;
determine a primary side ATE contactor resistance based on the first and second indications of the voltage on the primary side I/O pin, the voltage on the primary side of the power converter, and the input current on the primary side of the power converter;
and
determine a secondary side ATE contactor resistance based on the first and second load current values and the first and second indications of the voltage on the secondary side I/O pin and the voltage on the secondary side of the power converter.

5 more elements

A method for controlling an automated test equipment (ATE) contactor, the method comprising:

providing the ATE contactor to interface with a device under test (DUT), the DUT comprising a power converter having a primary side and a secondary side, each of the primary and secondary sides additionally comprising an input/output (I/O) pin;
measuring each of a voltage on the primary side I/O pin, a voltage on the primary side of the power converter, an input current on the primary side of the power converter, a voltage on the secondary side I/O pin, and a voltage on the secondary side of the power converter at multiple load current values on the secondary side of the DUT;
determining a primary side ATE contactor resistance based on the voltages on the primary side I/O pin, the voltages on the primary side of the power converter, and the input currents on the primary side of the power converter measured at the multiple load current values;
and
determining a secondary side ATE contactor resistance based on the multiple load current values and the voltages on the secondary side I/O pin and the voltages on the secondary side of the power converter measured at the multiple load current values.

2 more elements

A system comprising:

a controller for an automated test equipment (ATE) contactor configured to interface with a device under test (DUT) comprising a power converter having a primary side and a secondary side, each of the primary and secondary sides additionally comprising an input/output (I/O) pin, the controller configured to:
measure each of a voltage on the primary side I/O pin, a voltage on the primary side of the power converter, an input current on the primary side of the power converter, a voltage on the secondary side I/O pin, and a voltage on the secondary side of the power converter, at multiple load current values on the secondary side of the DUT;
determine a primary side ATE contactor resistance based on the voltages on the primary side I/O pin, the voltages on the primary side of the power converter, and the input currents on the primary side of the power converter measured at the multiple load current values;
and
determine a secondary side ATE contactor resistance based on the multiple load current values and the voltages on the secondary side I/O pin and the voltages on the secondary side of the power converter measured at the multiple load current values.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/989,126Filed 24 May 2018
Priority: IN 20174101835125 May 2017
Published: US 2018/0340961 A129 Nov 2018
Granted: 1 Sep 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

G01R 1/06766
Measuring probes: input circuits therefor
G01R 31/2834
Specific tests of electronic circuits not provided for elsewhere: automated test systems [ATE]; using microprocessors or computers
G01R 35/00
Testing or calibrating of apparatus covered by the other groups of this
G01R
Measuring electric variables