Test apparatus, additional circuit and test board for calculating load current of a device under test
AssigneeAdvantest Corporation
InventorYoshihiro Hashimoto
Life of this patent
Estimating the term…
Abstract
Provided is a test apparatus that measures charge/discharge current of an intermediate capacitor provided between a transmission path transmitting power from a power supply to a device under test and a ground potential, and calculates a load current flowing through a device under test, based on the charge/discharge current.
Claims17
A test apparatus that tests a device under test, comprising:
- a power supply that generates power supplied to the device under test;
- a transmission path that transmits the power generated by the power supply to the device under test;
- an intermediate capacitor that is provided between the transmission path and a ground potential;
- a charge/discharge current measuring section that measures a charge/discharge current of the intermediate capacitor;
- and
- a load current calculating section that calculates a load current flowing through the device under test, based on the charge/discharge current.
An additional circuit that is used in a test apparatus for testing a device under test, the test apparatus including a power supply that generates power supplied to the device under test, a transmission path that transmits the power generated by the power supply to the device under test, and a load current calculating section that calculates a load current flowing through the device under test, the additional circuit comprising:
- an intermediate capacitor that is connected between the transmission path and a ground potential;
- and
- a charge/discharge current measuring section that measures charge/discharge current of the intermediate capacitor and notifies the load current calculating section concerning the measurement result.
A test board that is used in a test apparatus for testing device under test, comprising:
- a transmission path that transmits power generated by a power supply to the device under test;
- an intermediate capacitor provided between the transmission path and a ground potential;
- and
- a charge/discharge current measuring section that measures a charge/discharge current of the intermediate capacitor, and notifies a load current calculating section concerning the charge/discharge current.
Dependencies are inferred from the claim text.