Storage Host Voltage Mapping for Data-Rate Power Control
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Solution Overview
Problem
Existing storage systems face inefficiencies in power management due to fixed voltage supply to device controllers, which do not adapt to varying data transmission rates, leading to suboptimal power consumption.
Innovation Solution
A storage system that dynamically adjusts the voltage levels of the VCCQL voltage based on data transmission rates, allowing the host device to provide a voltage level mapped to the desired transmission rate, thereby optimizing power efficiency by using the VCCQL voltage directly without additional regulation during normal operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed voltage supply is used to device controller, then power management is simplified, but power consumption efficiency deteriorates
Solution Approach 1:
The patent implements dynamic voltage adjustment where the host device changes the voltage level supplied to the device controller based on the current data transmission rate. The voltage can switch between first voltage level (higher) and second voltage level (lower), allowing the system to adapt power consumption to actual operational needs rather than maintaining a fixed voltage supply.
Solution Approach 2:
The patent changes the voltage parameter supplied to the device controller according to data transmission rate conditions. When data transmission rate changes, the host device adjusts the voltage level accordingly, optimizing power efficiency by matching voltage supply to actual performance requirements rather than using a constant voltage.
2Adaptability or versatility
If voltage regulation is performed in device controller, then voltage adaptability is improved, but power consumption increases
Solution Approach 1:
The patent extracts the voltage regulation function from the device controller and relocates it to the host device. The host device now performs the voltage adjustment and supplies the appropriately regulated voltage to the device controller, eliminating the need for voltage regulation circuitry within the device controller itself.
Solution Approach 2:
The host device acts as an intermediary that receives voltage from the power supply, regulates it to the appropriate level based on data transmission rate, and then supplies it to the device controller. This intermediary approach allows voltage adaptation without requiring regulation components in the device controller.
3Speed
If voltage level is increased for higher data transmission rate, then data transmission speed is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic voltage adjustment where the host device changes the voltage level supplied to the device controller based on the current data transmission rate. The voltage can switch between first voltage level (higher) and second voltage level (lower), allowing the system to adapt power consumption to actual operational needs rather than maintaining a fixed voltage supply.
Solution Approach 2:
The patent changes the voltage parameter supplied to the device controller according to data transmission rate conditions. When data transmission rate changes, the host device adjusts the voltage level accordingly, optimizing power efficiency by matching voltage supply to actual performance requirements rather than using a constant voltage.
Data Source
AI summary
Provided is an operating method of a storage device, the operating method including providing mapping information to a host when an initialization operation is performed, the mapping information including information about a plurality of data transmission rates and voltage levels of a first voltage, receiving the first voltage from the host through a first voltage pin, the first voltage having a first voltage level, receiving a first change request from the host, the first change request being a request to change a data transmission rate from a first data transmission rate to a second data transmission rate, and receiving the first voltage from the host through the first voltage pin, the first voltage having a second voltage level mapped to the second data transmission rate.