US Patent 9188633 Power supply apparatus for test apparatus

Patent 9188633 was granted and assigned to Advantest on November, 2015 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors Activity

Is a

Patent

Patent attributes

Current Assignee

Advantest

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

9188633

Date of Patent

November 17, 2015

Patent Application Number

13402502

Date Filed

February 22, 2012

Patent Primary Examiner

‌

Huy Q Phan

Patent abstract

A first A/D converter converts an analog observed value, which corresponds to a power supply signal supplied to a power supply terminal of a DUT, into a digital observed value. By means of digital calculation processing, a digital signal processing circuit generates a control value that is adjusted such that the digital observed value matches a predetermined reference value. A first D/A converter supplies, via a power supply line to the power supply terminal of the DUT, an analog power supply signal obtained by performing digital/analog conversion of the control value. A load estimating unit applies a test signal containing a predetermined frequency component via the power supply line to a node via which the power supply terminal is to be connected, and generates a control parameter for the digital signal processing circuit according to the test signal and the observed signal.