Auxiliary power supply and user device including the same
First Claim
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1. A solid state drive, comprising:
- 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 disposed in a sole power path connecting a main power supply to the controller, the first one directional device configured to permit current to flow only in a first direction, the first direction being from the 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 charging current path from the main power supply to the auxiliary power source, anda second one directional device configured to permit current to flow in a second direction along a discharging current path, the second direction being from the auxiliary power source to the controller, and whereinthe charging current path is different from the discharging current path, andthe first one directional device is disposed on the sole power path before the charging current path splits off of the sole power path.
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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. 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 disposed in a sole power path connecting a main power supply to the controller, the first one directional device configured to permit current to flow only in a first direction, the first direction being from the 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 charging current path 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 along a discharging current path, the second direction being from the auxiliary power source to the controller, and wherein the charging current path is different from the discharging current path, and the first one directional device is disposed on the sole power path before the charging current path splits off of the sole power path. - View Dependent Claims (2, 3, 4, 5)
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6. 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 through a current path 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 auxiliary power before and after the second detector indicates the power level of the auxiliary power source drops below the threshold. - View Dependent Claims (7)
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8. An auxiliary power system associated with a memory system, comprising:
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a first one directional device disposed in a sole power path connecting a main power supply to the memory system, the 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 charging current path from the main power supply to the auxiliary power source; and a second one directional device configured to only permit current to flow in a second direction through a discharging current path, the second direction being from the auxiliary power source to the memory system, and wherein the charging current path is different from the discharging current path and the first one directional device is disposed on the sole power path before the charging current path splits off of the sole power path. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. 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 charge an auxiliary power through a first power line and a second power line, and provide the auxiliary power to the at least one memory through the second power line, the auxiliary power system including, a first one directional device configured to electrically disconnect the first power line with the second power line according to a level of the first power line, the first power line and the second power line forming part of a sole power path from a main power supply to the controller; and a second one directional device configured to provide the auxiliary power to the second power line according to a level of the second power line.
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Specification