Memory I/O Power Switching for Balanced Dual Voltage Supply
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Solution Overview
Problem
Existing memory devices face inefficiencies in current consumption management due to reliance on a single voltage source, leading to power losses and design issues when the current budget limit is exceeded, particularly in larger memory devices with increased I/O circuitry.
Innovation Solution
A memory device that selectively uses both a first and second voltage source, transitioning between them during operation to optimize current draw, employing a voltage regulator and transistors controlled by logic to manage power distribution efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single voltage source is used to power I/O circuitry, then the device structure is simpler, but power losses increase and current budget limits are exceeded
Solution Approach 1:
The patent divides the power supply system into two separate voltage sources (first voltage source and second voltage source) that can independently power different portions of the I/O circuitry. This segmentation allows optimized power distribution where each voltage source can be tailored to specific circuit requirements, reducing overall power losses while managing current budget constraints effectively
Solution Approach 2:
The patent implements dynamic switching between single and dual voltage source modes based on operational conditions. The controller selectively activates the first voltage source, second voltage source, or both simultaneously depending on current draw requirements, enabling the system to adapt power configuration to match actual operational needs and minimize energy losses
2Quantity of substance
If a single voltage source is used, then the design is simpler, but current budget limit is exceeded in larger memory devices
Solution Approach 1:
The patent segments the I/O circuitry into multiple power domains, each supplied by appropriate voltage sources. This allows the system to distribute current draw across multiple sources, preventing any single source from exceeding current budget limits while maintaining adequate power supply for all circuit functions
Solution Approach 2:
The patent changes the electrical parameters of the power supply system by introducing a second voltage source with different characteristics. This parameter change enables the system to handle higher current demands in larger memory devices by distributing the load, effectively increasing the available current budget without proportionally increasing design complexity
3Speed
If voltage regulation is implemented quickly, then response time is improved, but large capacitive filters are required
Solution Approach 1:
The patent implements dynamic voltage regulation where the controller adjusts voltage output in real-time based on detected current draw conditions. This dynamic approach allows quick response to changing power requirements without relying on large capacitive filters, as the regulation is achieved through active control rather than passive energy storage
Solution Approach 2:
The patent employs feedback mechanisms where the controller continuously monitors current draw from the I/O circuitry and adjusts voltage source activation accordingly. This feedback-driven regulation achieves fast response times by detecting and responding to power needs in real-time, eliminating the need for large capacitive filters that would be required for passive voltage stabilization
Data Source
AI summary
An apparatus includes a first switch coupled between a first voltage source and input/output (I/O) circuitry of a memory device, wherein the first voltage source is to supply power to core memory circuitry of the memory device. A second switch is coupled between a second voltage source and the I/O circuitry. Control logic is coupled with the first and second switches and to cause the second switch to be activated to permit current to flow from the second voltage source to the I/O circuitry. The control logic, in response to detecting a current draw from the I/O circuitry that satisfies a first threshold criterion, causes the first switch to be activated.