Gate charge measurements using two source measure units

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United States of America Patent

PATENT NO 10962585
APP PUB NO 20190346501A1
SERIAL NO

16403387

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Abstract

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A testing environment includes a first measuring unit connected to a gate of a MOSFET device and a second measuring unit connected to a drain of the MOSFET device. The testing environment is particularly useful for testing gate charge for MOSFET devices. In a first phase, the gate of the device is driven with electrical current while the drain is driven with a constant voltage. As the MOSFET device turns on, the second measuring unit switches from providing the constant voltage to providing a constant current to the drain of the MOSFET, while measuring the drain voltage. The switching of modes is automatic and occurs without user intervention. After the MOSFET device has been driven to VgsMax by the gate current, all of the relevant data is stored, which may be analyzed and presented to a user in a User Interface or presented in other manner.

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Patent Owner(s)

  • KEITHLEY INSTRUMENTS, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pronin, Alexander N Twinsburg, US 5 2
Tupta, Mary Anne Twinsburg, US 2 0

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