Patent ID: 11869602
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method of providing an auxiliary power by an auxiliary power supply to a Solid State Drive (SSD), the method comprising:
receiving an external power at the auxiliary power supply through a first power line;
providing the received external power to the SSD through a second power line;
converting the external power to a plurality of charging voltages;
charging a charging circuit including at least one capacitor with a first charging voltage of the plurality of charging voltages;
monitoring a change in capacitance of the charging circuit by measuring a voltage of the charging circuit;
when capacitance of the charging circuit is less than a first reference capacitance, increasing the first charging voltage of the charging circuit by charging the charging circuit with a second charging voltage of the plurality of charging voltages, the second charging voltage higher than the first charging voltage by a first voltage amount; and
when sudden power off (SPO) occurs and the external power is not normally supplied to the auxiliary power supply through the first power line:
providing an auxiliary power to the SSD through the second power line for retaining data stored in the SSD, and
blocking the external power from being output to the second power line by turning off a switching circuit,
wherein the auxiliary power is generated based on the voltage of the charging circuit.