The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 21, 2025
Filed:
May. 04, 2023
Applicant:
Advantest Corporation, Tokyo, JP;
Inventors:
Takahiko Shimizu, Tokyo, JP;
Shoichiro Imai, Tokyo, JP;
Assignee:
ADVANTEST CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 1/00 (2007.01); H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33523 (2013.01); H02M 1/0009 (2021.05); H02M 1/0019 (2021.05); H02M 3/33515 (2013.01);
Abstract
A power supply apparatus includes multiple channels of power supply units coupled in a stack connection. Each power supply unit includes an output stage configured to generate an output voltage across a positive output and a negative output according to a control signal. A current detector of a master channel generates a current detection signal that indicates an output current of the output stage. A feedback controller generates the control signal such that the current detection signal approaches a target value.