POWER SUPPLY CIRCUIT OF TERMINAL AND METHOD FOR SUPPLYING POWER USING THE SAME
First Claim
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1. A power supply circuit of a terminal, the circuit comprising:
- a power interface to which power is supplied;
a converter and a charging circuit connected to the power interface;
a battery for receiving power from the charging circuit and for providing stored power to a system;
a system for selectively receiving power from the battery or the system;
a main switch disposed between the battery and the system for selectively interrupting the power of the battery to the system; and
a control logic unit for switching the main switch according to the presence of power supplied from the power interface.
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Abstract
A power supply circuit and a power supply method using the same are provided. The power supply circuit includes a power interface to which power is supplied, a converter and a charging circuit connected to the power interface, a battery for receiving power from the charging circuit and for providing stored power to a system, the system for selectively receiving power from the battery or the system, a main switch disposed between the battery and the system for selectively interrupting the power of the battery to the system, and a control logic unit for switching the main switch according to presence of power supplied from the power interface.
13 Citations
19 Claims
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1. A power supply circuit of a terminal, the circuit comprising:
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a power interface to which power is supplied; a converter and a charging circuit connected to the power interface; a battery for receiving power from the charging circuit and for providing stored power to a system; a system for selectively receiving power from the battery or the system; a main switch disposed between the battery and the system for selectively interrupting the power of the battery to the system; and a control logic unit for switching the main switch according to the presence of power supplied from the power interface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power supply method of a terminal, the method comprising:
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supplying power of a battery to a system; comparing a voltage of the adapter power with a voltage of the battery power when the power of an adapter is supplied during the supplying of the battery power; and supplying the adapter power to the system and isolating the battery when the voltage of the adapter power is greater than that of the battery power. - View Dependent Claims (12, 13)
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14. A power supply method of a terminal, the method comprising:
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supplying power of a battery to a system; and interrupting the power supply of the battery to the system and supplying external power to the system when the external power is supplied during the supply of the battery power. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification