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Startup performance and power isolation

  • US 9,235,245 B2
  • Filed: 12/19/2013
  • Issued: 01/12/2016
  • Est. Priority Date: 12/04/2013
  • Status: Active Grant
First Claim
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1. A method of power management in a storage device, the method comprising:

  • powering a power control processor (PCP) using a first input voltage;

    while the PCP is powered using the first input voltage;

    operating the PCP in a first mode; and

    enabling charging of an energy storage device;

    after achieving a predefined internal state, which includes the energy storage device charged to a predefined level, powering the PCP using a power supply voltage distinct from the first input voltage; and

    while the PCP is powered using the power supply voltage, operating the PCP in a second mode, wherein the PCP operates at a higher performance level in the second mode than in the first mode.

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