Startup performance and power isolation
First Claim
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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Accused Products
Abstract
The various implementations described herein include systems, methods and/or devices used to protect data in a storage device. In one aspect, a method includes (1) powering a power control processor (PCP) (also sometimes called a storage-level microcontroller) using a first input voltage, (2) while the PCP is powered using the first input voltage: (a) operating the PCP in a first mode, and (b) enabling charging of an energy storage device, (3) 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 (4) while the PCP is powered using the power supply voltage, operating the PCP in a second mode, where the PCP operates at a higher performance level in the second mode than in the first mode.
385 Citations
28 Claims
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1. A method of power management in a storage device, the method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A storage device, comprising:
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an interface for coupling the storage device to a host system; an energy storage device; and a power control processor (PCP), the storage device configured to; power the PCP using a first input voltage; while the PCP is powered using the first input voltage; operate the PCP in a first mode; and charge an energy storage device; after achieving a predefined internal state, which includes the energy storage device charged to a predefined level, power the PCP using a power supply voltage distinct from the first input voltage; and while the PCP is powered using the power supply voltage, operate the PCP in a second mode, wherein the PCP operates at a higher frequency in the second mode than in the first mode. - View Dependent Claims (20, 21, 22, 23)
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24. A non-transitory computer readable storage medium, storing one or more programs for execution by one or more processors of a storage device having a plurality of controllers and a power control processor (PCP), the one or more programs including instructions for:
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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. - View Dependent Claims (25, 26, 27, 28)
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Specification