Patent ID: 11942868
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A power supply device comprising:
a first inductor;
a second inductor;
a third inductor;
a first transistor including a first electrode configured to receive an input voltage, and a second electrode connected to the second inductor;
a second transistor including a first electrode configured to receive the input voltage, and a second electrode connected to the third inductor; and
a power integrated chip (IC) including input terminals respectively connected to the first inductor, the second inductor, and the third inductor, and an output terminal connected to a power line,
wherein the power supply device is configured to supply a power voltage using the first inductor and the power IC when power current flowing through the power line is less than a first reference value, supply the power voltage using the second inductor, the first transistor, and the power IC when the power current is increased and is greater than the first reference value and less than a second reference value, and supply the power voltage using the second inductor, the third inductor, the first transistor, the second transistor, and the power IC when the power current is increased and is greater than the second reference value.