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Auxiliary power supply and user device including the same

  • US 9,626,259 B2
  • Filed: 07/22/2014
  • Issued: 04/18/2017
  • Est. Priority Date: 12/09/2008
  • Status: Active Grant
First Claim
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1. A solid state drive, comprising:

  • at least one memory;

    a controller configured to control the at least one memory; and

    an auxiliary power system configured to provide auxiliary power to the at least one memory,the auxiliary power system including,a first one directional device disposed in a sole power path connecting a main power supply to the controller, the first one directional device configured to permit current to flow only in a first direction, the first direction being from the main power supply to the controller,an auxiliary power source configured to be charged by supplying a power of the main power supply through a charging current path from the main power supply to the auxiliary power source, anda second one directional device configured to permit current to flow in a second direction along a discharging current path, the second direction being from the auxiliary power source to the controller, and whereinthe charging current path is different from the discharging current path, andthe first one directional device is disposed on the sole power path before the charging current path splits off of the sole power path.

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