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.

Date of Patent:
Apr. 14, 2020

Filed:

May. 03, 2017
Applicant:

Dell Products, Lp, Round Rock, TX (US);

Inventors:

Tsai-Fu Hung, New Taipei, TW;

Rita Joy F. Miranda, New Taipei, TW;

Shih-Chieh Wang, Taipei, TW;

Assignee:

Dell Products, L.P., Round Rock, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 9/06 (2006.01); H02M 1/10 (2006.01); H02J 7/00 (2006.01); H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
H02J 9/061 (2013.01); H02M 1/10 (2013.01); H02J 7/0068 (2013.01); H02M 3/33584 (2013.01);
Abstract

A multiple power supply system includes first and second power supply units. The first power supply unit provides a main output voltage while in a normal mode of operation. The first power supply unit includes a first bulk capacitor, and first standby power circuitry. The first standby power circuitry provides a standby voltage while the first power supply unit is in the normal mode of operation. The second power supply unit provides the main output voltage while in the normal mode of operation. The first power supply unit includes a second bulk capacitor, and second standby power circuitry. The second standby power circuitry provides the standby voltage while the first power supply unit is in the normal mode of operation, and enables reverse charging of the second bulk capacitor by the first power supply unit while the second power supply unit is in a reverse charging mode of operation.


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