×

Holdup time measurement for solid state drives

  • US 10,521,305 B2
  • Filed: 04/29/2016
  • Issued: 12/31/2019
  • Est. Priority Date: 04/29/2016
  • Status: Active Grant
First Claim
Patent Images

1. A solid state drive (SSD) comprising:

  • a primary controller operable at a first minimum operable voltage;

    a secondary controller operable at a second minimum operable voltage that is less than the first minimum operable voltage; and

    a power circuit configured to supply power to the primary controller and the secondary controller from a power source during normal operation of the SSD and from a backup power source in response to a loss of power supplied by the power source, whereinthe secondary controller is configured to track a time from the loss of power supplied by the power source to a reset of the primary controller,wherein the primary controller is not operable at a supply voltage below the first minimum operable voltage, and the secondary controller is operable at the supply voltage below the first minimum operable voltage.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×