Multi-Input Regulator Current Sharing for Peak Load Control
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Solution Overview
Problem
Memory systems face challenges in managing current consumption when desired current draw exceeds specification limits, leading to reduced system performance and potential thermal issues.
Innovation Solution
A regulator is designed to share load current from multiple input supply voltages, with an adjustable current sharing point and ratio, allowing peak current draw beyond individual supply limits, optimizing power consumption and thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current draw is increased to improve system performance, then productivity is improved, but current consumption exceeds specification limits and thermal issues occur
Solution Approach 1:
The patent divides the current supply into multiple independent input supplies (first input supply and second input supply), each capable of providing current to the regulator. This segmentation allows the system to draw current from multiple sources simultaneously, enabling higher total current draw while keeping individual supply current consumption within specification limits, thus resolving the contradiction between productivity and energy use.
2Productivity
If current draw is increased to improve system performance, then productivity is improved, but thermal impact increases
Solution Approach 1:
By segmenting the current draw across multiple input supplies, the patent distributes the thermal load across multiple power delivery paths. This reduces the thermal impact on any single supply path while maintaining the required total current draw for system performance, effectively resolving the contradiction between productivity and temperature.
3Use of energy by moving object
If current sharing point is made adjustable to optimize power consumption, then use of energy is improved, but device complexity increases
Solution Approach 1:
The patent implements a dynamic current sharing point that can be adjusted based on system conditions. The regulator includes control circuitry that can modify the current sharing threshold to optimize power consumption under different operating conditions. This dynamic adjustment capability allows the system to adapt to varying load requirements and supply conditions, improving energy efficiency while the control logic manages the added complexity.
Solution Approach 2:
The patent changes the parameter of current sharing point from a fixed value to an adjustable parameter. By allowing the current sharing threshold to be modified, the system can optimize power consumption for different operating scenarios. This parameter change enables flexible power management while the control circuitry handles the complexity of adjustment, resolving the contradiction between energy efficiency and device complexity.
Data Source
AI summary
Various embodiments of the present disclosure relate to apparatuses and methods for regulators providing shared current from multiple input supplies. A regulator can include a first portion configured to receive a first supply voltage and to output a first current drawn from the first supply voltage by a load, and a second portion configured to receive a second supply voltage. The regulator can include a current control circuit configured to, responsive to a load current corresponding the load meeting a particular criteria, initiate current sharing such that the load current is subsequently shared between the first supply voltage and the second supply voltage.