Auxiliary power supply and user device including the auxiliary power supply
AssigneeSamsung Electronics Co., Ltd.
InventorsSang-hun Jeon, Ho-jun Shim
Life of this patent
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Abstract
Auxiliary power supplies include a capacitor (e.g., super capacitor) and a capacitor charging circuit, which is configured to provide a charging current to a first terminal of the capacitor. Enhanced failure detection is provided by a capacitor monitoring circuit, which may be electrically coupled to at least one terminal of the capacitor. The capacitor monitoring circuit is configured to detect when the capacitor is malfunctioning in an open condition as well as when the capacitor is malfunctioning in a short condition.
Claims23
An auxiliary power supply, comprising:
- a capacitor;
- a capacitor charging circuit configured to provide a charging current to a first terminal of said capacitor;
- and
- a capacitor monitoring circuit electrically coupled to at least one terminal of said capacitor, said capacitor monitoring circuit configured to detect when said capacitor is malfunctioning in an open condition and when said capacitor is malfunctioning in a short condition.
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An auxiliary power supply comprising:
- a capacitor;
- a charge circuit unit for controlling charge power supplied to the capacitor;
- and
- a monitoring unit for monitoring a state of the capacitor,
- wherein the monitoring unit comprises:
- a resistor connected in series to the capacitor;
- and
- a capacitor state determination unit for determining the state of the capacitor based on a difference between voltages of two terminals of the resistor.
A user device comprising:
- a storage device;
- a main power supply for supplying power to the storage device;
- and
- an auxiliary power supply for supplying auxiliary power to the storage device if the power supplied from the main power supply is blocked,
- wherein the auxiliary power supply comprises:
- a capacitor;
- a charge circuit unit for controlling the power supplied from the main power supply, and supplying charge power to the capacitor;
- a resistor connected in series to the capacitor;
- and
- a capacitor state determination unit for monitoring a state of the capacitor based on a detection signal generated according to a difference between voltages of two terminals of the resistor.
Dependencies are inferred from the claim text.