Universal power supply apparatus
There is provided a universal power supply apparatus including a power supply unit switching input power into driving power having a preset voltage level and supplying the driving power, a power recognition unit outputting a recognition voltage having a preset voltage level to an output terminal from which the power is output to recognize connection of a device, controlling a power output of the power supply unit according to a detected rated output, and recognizing disconnection of the device after the connection of the device according to a power state of the driving power of the power supply unit, and a detection unit providing a detection voltage having a preset voltage level to the output terminal.
1. A universal power supply apparatus, comprising:
a power supply unit switching input power into driving power having a preset voltage level and supplying the driving power;
a power recognition unit outputting a recognition voltage having a preset voltage level to an output terminal from which the power is output to recognize connection of a device, controlling a power output of the power supply unit according to a detected rated output, and recognizing disconnection of the device after the connection of the device according to a power state of the driving power of the power supply unit; and
a detection unit providing a detection voltage having a preset voltage level to the output terminal,
wherein the power recognition unit recognizes the disconnection of the device based on the power state of the driving power according o changes in a switching mode of the power supply unit during the disconnection of the device.
2. The universal power supply apparatus of claim 1 , wherein the power supply unit includes:
a switching unit switching the input power in a preset normal mode and switching the input power in a preset burst mode when the connection of the device is released after the input power is switched in the normal mode;
an outputting unit transforming the power switched by the switching unit to output the power; and
a connection and disconnection detecting unit detecting the connection and disconnection of the device based on the power switched by the switching unit.
3. The universal power supply apparatus of claim 2 , wherein the power recognition unit stops the power output of the power supply unit when the connection of the device is released, according to a detection signal from the connection and disconnection detecting unit.
4. The universal power supply apparatus of claim 1 , wherein the detection voltage has the same voltage level as the voltage level of the driving power.
5. The universal power supply apparatus of claim 1 , wherein the detection unit changes the voltage level of the driving power to set the voltage level of the detection voltage.
6. A universal power supply apparatus of, comprising:
a power supply unit switching input power into driving power having a preset voltage level and supplying the driving power;
a power recognition unit outputting a recognition voltage having a preset voltage level to an output terminal from which the power is output to recognize connection of a device, controlling a power output of the power supply unit according to a detected rated output, and recognizing disconnection of the device after the connection of the device according to a power state of the driving power of the power supply unit; and
a detection unit providing a detection voltage having a preset voltage level to the output terminal,
wherein the power recognition unit controls the voltage level of the detection voltage to be changed to a preset voltage level when the detection voltage of which the voltage level is reduced is equal to or greater than a reference voltage reduction level.
7. The universal power supply apparatus of claim 6 , wherein the power recognition unit outputs the driving power of the power supply unit when the reduced voltage level of the detection voltage is equal to or less than the reference voltage reduction level.
8. A universal power supply apparatus, comprising:
a power supply unit switching input power into driving power having a preset voltage level and supplying the driving power;
a power recognition unit recognizing connection of a device according to impedance fluctuations in an output terminal from which the power is output, controlling power supply of the power supply unit according to a detected rated output, and recognizing disconnection of the device after the connection of the device according to a power state of the driving power of the power supply unit; and
a detection unit providing a detection voltage having a preset voltage level to the output terminal,
wherein the power recognition unit recognizes the disconnection of the device based on the power state of the driving power according to changes in a switching mode of the power supply unit during the disconnection of the device.
9. The universal power supply apparatus of claim 8 , wherein the power supply unit includes:
a switching unit switching the input power in a preset normal mode and switching the input power in a preset burst mode when the connection of the device is released after the input power is switched in the normal mode;
an outputting unit transforming the power switched by the switching unit to output the power; and
a connection and disconnection detecting unit detecting the connection and disconnection of the device based on the power switched by the switching unit.
10. The universal power supply apparatus of claim 9 . wherein the power recognition unit stops the power output of the power supply unit when the connection of the device is released, according to a detection signal from the connection and disconnection detecting unit.
11. The universal power supply apparatus of claim 8 , wherein the detection voltage has the same voltage level as the voltage level of the driving power.
12. The universal power supply apparatus of claim 8 , wherein the detection unit changes the voltage level of the driving power to set the voltage level of the detection voltage.
13. A universal power supply apparatus, comprising:
a power supply unit switching input power into driving power having a preset voltage level and supplying the driving power;
a power recognition unit recognizing connection of a device according to impedance fluctuations in an output terminal from which the power is output, controlling power supply of the power supply unit according to a detected rated output, and recognizing disconnection of the device after the connection of the device according to a power state of the driving power of the power supply unit; and
a detection unit providing a detection voltage having a preset voltage level to the output terminal,
wherein the power recognition unit controls the voltage level of the detection voltage to be changed to a preset voltage level when the detection voltage of which the voltage level is reduced is equal to or greater than a reference voltage reduction level.
14. The universal power supply apparatus of claim 13 , wherein the power recognition unit outputs the driving power of the power supply unit when the reduced voltage level of the detection voltage is equal to or less than the reference voltage reduction level.