US 12,407,181 B2
Dual output uninterruptible power supply
Banha Sok, Kirkland, WA (US); Rameez K. Kazi, Bellevue, WA (US); Shaun L. Harris, Redmond, WA (US); and John J. Siegler, Redmond, WA (US)
Assigned to Microsoft Technology Licensing, LLC., Redmond, WA (US)
Filed by Microsoft Technology Licensing, LLC, Redmond, WA (US)
Filed on Jun. 14, 2023, as Appl. No. 18/335,095.
Application 18/335,095 is a continuation of application No. 16/675,213, filed on Nov. 5, 2019, granted, now 11,715,973.
Prior Publication US 2023/0327478 A1, Oct. 12, 2023
Int. Cl. H02J 9/06 (2006.01); G06F 1/30 (2006.01)
CPC H02J 9/062 (2013.01) [G06F 1/30 (2013.01); H02J 9/068 (2020.01)] 20 Claims
OG exemplary drawing
 
1. A rack comprising:
a power shelf configured to receive power from a first power source or a second power source, and provide alternating current (AC) power and direct current (DC) power to a device in the rack;
the first power source configured to provide AC power to the power shelf; and
the second power source comprises an uninterruptable power supply (UPS) that is configured to, upon failure of the first power source, receive input DC power from a battery, convert the input DC power to an AC power, and provide the AC power to the power shelf,
the UPS being further configured to:
current share DC power with an output of the power shelf upon the device drawing more DC power than a rated level from the output of the power shelf, and
provide DC power to the device upon failure of the rack.