Samsung Electronics Co., Ltd.

Minsung Kil

Youngsang Cho

Chunghyun Ryu

Ho-Jin Chun

Hyoungtaek Lim

Hojin Chun

Suckhyun Nam

Taesun Park

A storage device includes a plurality of power circuits configured to operate sequentially to drive the storage device, a control circuit configured to, monitor a plurality of first monitoring signals received from the plurality of power circuits, and generate a retry request in response to detection of hardware initialization failure in at least one of the plurality of power circuits based on the plurality of first monitoring signals, and a power sequence circuit configured to, monitor a plurality of second monitoring signals received from the plurality of power circuits and the control circuit, and retry a hardware initialization operation for at least one power circuit of the plurality of power circuits based on the retry request and the plurality of second monitoring signals.

Storage device providing hardware initialization retry function and method of operating the same

A storage device includes a main system; a power loss protection integrated circuit (PLP IC) configured to provide output power to the main system based on external or internal power; and an auxiliary power supply configured to provide the internal power to the PLP IC. The main system may operate in a dump mode where data is backed up in response to at least one of a first condition or a second condition being satisfied. The PLP IC may provide the output power based on the internal power in response to a sudden power off (SPO) occurring. The first condition is satisfied when the SPO occurs and an SPO time is longer than a maximum filtering time. The second condition is satisfied when the SPO occurs and a voltage level of the internal power provided by the auxiliary power supply is lower than a voltage level of a threshold voltage.

Storage device including auxiliary power supply and method of operating the same

In a method of resetting a storage device, an internal power supply voltage is generated based on an external power supply voltage. A first reset control signal that is activated when a level of the internal power supply voltage is higher than a reference level. A second reset control signal that is activated after a power-on of the storage device is completed or deactivated after a predetermined delay time from when the external power supply voltage is turned off. A final reset control signal is generated based on the first reset control signal and the second reset control signal. The final reset control signal is activated when at least one of the first and second reset control signals is activated. After the external power supply voltage is turned off, a reset operation is performed when the final reset control signal is activated.

Method of resetting storage device, storage device performing the same and data center including the same

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Hwaseong-si, South Korea

Minsung Kil