Techniques to Power Down Output Power Rails for a Storage Device
First Claim
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1. An apparatus comprising:
- power loss imminent (PLI) logic for a storage device, at least a portion of the PLI logic in hardware, the PLI logic to;
detect that a source voltage received from a power source has dropped below a threshold voltage, the power source arranged to provide operational power to the storage device;
cause a first output capacitor for a first output power rail of the storage device to discharge a first energy away from a first output capacitor and through a first voltage regulator for the first output power rail to a power input for the first output power rail and one or more other output power rails including a second output power rail; and
cause the first energy and a second energy discharging from an input capacitor for the power input to be a second power source to provide source power to a second voltage regulator for the second output power rail to enable the second output power rail to ramp down power provided to a second output load.
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Abstract
Examples include techniques to power down output power rails for a storage device. In some examples, energy discharged from output capacitors for output power rails and energy discharged from input capacitors may be used to facilitate power down of power rails for the storage device.
17 Citations
26 Claims
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1. An apparatus comprising:
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power loss imminent (PLI) logic for a storage device, at least a portion of the PLI logic in hardware, the PLI logic to; detect that a source voltage received from a power source has dropped below a threshold voltage, the power source arranged to provide operational power to the storage device; cause a first output capacitor for a first output power rail of the storage device to discharge a first energy away from a first output capacitor and through a first voltage regulator for the first output power rail to a power input for the first output power rail and one or more other output power rails including a second output power rail; and cause the first energy and a second energy discharging from an input capacitor for the power input to be a second power source to provide source power to a second voltage regulator for the second output power rail to enable the second output power rail to ramp down power provided to a second output load. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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detecting, at a processing circuit, that a source voltage received from a power source arranged to provide operational power to a storage device has dropped below a threshold voltage; causing a first output capacitor for a first output power rail of the storage device to discharge a first energy away from a first output capacitor and through a first voltage regulator for the first output power rail to a power input for the first output power rail and one or more other output power rails including a second output power rail; and combining the first energy and a second energy discharging from an input capacitor for the power input, the combined first and second energy to serve as a second power source to provide source power to a second voltage regulator for the second output power rail to enable the second output power rail to ramp down power provided to a second output load. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A system comprising:
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one or more memory devices; and a power management module to manage power provided to the one or more memory devices, the power management module including a power loss imminent (PLI) logic, at least a portion of the PLI logic in hardware, the PLI logic to; detect that a source voltage received from a power source has dropped below a threshold voltage, the power source arranged to provide operational power to the one or more memory devices; cause a first output capacitor for a first output power rail of the one or more memory devices to discharge a first energy away from a first output capacitor and through a first voltage regulator for the first output power rail to a power input for the first output power rail and one or more other output power rails including a second output power rail; and cause the first energy and a second energy discharging from an input capacitor for the power input to be a second power source to provide source power to a second voltage regulator for the second output power rail to enable the second output power rail to ramp down power provided to a second output load. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26)
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Specification