AUXILIARY POWER SUPPLY AND USER DEVICE INCLUDING THE SAME
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Abstract
A user device is provided. The device includes a main power supply, and an auxiliary power supply. The main power supply provides a main power. The auxiliary power supply cuts off the main power according to a power level of the main power supply and provides an auxiliary power upon Sudden Power-Off (SPO).
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Citations
19 Claims
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1. (canceled)
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2. A solid state drive, comprising:
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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 configured to permit current to flow in a first direction, the first direction being from a 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 current path being from the main power supply to the auxiliary power source, and a second one directional device configured to permit current to flow in a second direction, the second direction being from the auxiliary power source to the controller, wherein the current path for charging power of the main power supply is different from that of the second one directional device for discharging auxiliary power. - View Dependent Claims (3, 4, 5, 6)
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7. A solid state drive, comprising:
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a memory system, the memory system including at least one memory; a first controller configured to control the memory system; an auxiliary power system configured to provide auxiliary power to at least the memory system, the auxiliary power system including, a first detector configured to detect a sudden main power off of a main power supply; an auxiliary power source configured to be charged by supplying a power of the main power supply to provide auxiliary power through a current path being from the main power supply to the auxiliary power source; a second detector configured to detect a power level of the auxiliary power source; a second controller configured to perform at least one memory protection operation using power from the auxiliary power source if the first detector detects the sudden main power off, and configured to perform the memory protection operation until the second detector indicates the power level of the auxiliary power source drops below a threshold; and wherein the auxiliary power source is configured to provide the auxiliary power before and after the second detector indicates the power level of the auxiliary power source drops below the threshold. - View Dependent Claims (8)
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9. An auxiliary power system associated with a memory system, comprising:
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a first one directional device configured to only permit current to flow there through in a first direction, the first direction being from a main power supply to the memory system; an auxiliary power source configured to be charged by supplying a power of the main power supply through a current path being from the main power supply to the auxiliary power source; and a second one directional device configured to only permit current to flow there though in a second direction, the second direction being from the auxiliary power source to the memory system, wherein the current path for charging power of the main power supply is different from that of the second one directional device for discharging auxiliary power. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification