Storage Device Voltage Control During Booting
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Solution Overview
Problem
During the initial booting of a storage system, the host faces challenges in determining the source voltage supported by the storage device, leading to potential reliability and durability issues due to mismatched voltage levels.
Innovation Solution
An operating method is provided where the storage device receives a target voltage during initial booting and minimizes the supply of a source voltage higher than its operation voltage, by controlling the voltage levels using a power management integrated circuit and a voltage controller.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the host supplies a default source voltage during initial booting, then the storage device can be powered on, but the voltage level may not match the storage device's operation voltage, causing reliability and durability issues
Solution Approach 1:
The storage device performs voltage detection and control actions during the initial booting phase before normal operation begins. The voltage controller detects the supplied source voltage and adjusts it to match the operation voltage in advance, ensuring reliable operation from the start without requiring complex runtime voltage negotiation mechanisms
Solution Approach 2:
The storage device autonomously detects the supplied source voltage and self-adjusts the voltage level through its internal voltage controller without requiring external intervention or complex host-side voltage negotiation. The device serves itself by automatically matching the operation voltage to the supplied source voltage during booting
2Reliability
If the storage device autonomously controls voltage during booting, then voltage matching is achieved, but the device complexity increases due to additional voltage control circuitry
Solution Approach 1:
The voltage controller functionality is merged with the existing power management infrastructure of the storage device. The voltage control circuitry is integrated into the device's existing power management architecture rather than being implemented as a separate standalone system, reducing overall device complexity while maintaining autonomous voltage control capability
Solution Approach 2:
The voltage controller is designed to perform multiple functions: detecting the supplied source voltage, determining the appropriate operation voltage, and adjusting the voltage level. This multi-functional approach consolidates what could be separate circuits into a single integrated component, reducing device complexity while achieving reliable voltage matching
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach ensures that the storage device operates within a reliable voltage range, enhancing its durability and preventing potential failures caused by unsupported voltage levels.
Implementation Method 1
providing a first voltage control signal to a power management integrated circuit to control a first source voltage to be provided to a storage device
Data Source
AI summary
An operating method of a storage device including a non-volatile memory is provided. The operating method includes: receiving a first source voltage through a first voltage signal pin; based on the first source voltage different from a target voltage of the storage device, controlling the first source voltage to the target voltage; receiving a command, which indicates an information request associated with an operation voltage of the storage device, from a host; transmitting a response, which corresponds to the information request, to the host by using the storage device; receiving a second source voltage which has a voltage level different from the first source voltage, through the first voltage signal pin; and providing the second source voltage to the non-volatile memory.