Power provider and driving method thereof

A power provider comprising:

• a first power source configured to convert an input voltage received from a first input terminal to provide a first power voltage greater than the input voltage to a first output terminal;
• a second power source configured to convert the input voltage received from a second input terminal to provide a second power voltage less than the input voltage to a second output terminal;
• and
• a low voltage detection circuit configured to provide a low voltage detection signal of an enable level in response to the input voltage being less than a reference low voltage, and to provide the low voltage detection signal of a disable level in response to the input voltage being greater than the reference low voltage,
• wherein the first power source and the second power source are configured to stop the conversion of the input voltage in response to the low voltage detection signal being changed from the disable level to the enable level,
• wherein the first power source is configured to increase a level of the first power voltage during a first period in response to the low voltage detection signal being changed from the enable level to the disable level, and
• wherein the second power source is configured to decrease a level of the second power voltage during at least a portion of the first period.

A driving method of a power provider,

• wherein the power provider includes:
• a first power source configured to receive an input voltage from a first input terminal and to provide a first power voltage to a first output terminal;
• and
• a low voltage detection circuit configured to provide a low voltage detection signal of an enable level in response to the input voltage being less than a reference low voltage, and to provide the low voltage detection signal of a disable level in response to the input voltage being greater than the reference low voltage, and
• wherein the driving method includes:
• connecting the first input terminal to the first output terminal during a first period in response to a first control signal for the first power source being changed from a disable level to an enable level;
• converting the input voltage to provide the first power voltage greater than the input voltage to the first output terminal after the first period;
• stopping the conversion of the input voltage by the first power source in response to the low voltage detection signal being changed from the disable level to the enable level;
• and
• connecting the first input terminal to the first output terminal during a second period in response to the low voltage detection signal being changed from the enable level to the disable level.