Multi-Die Voltage Regulation Using Cross-Die Capacitors
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Solution Overview
Problem
Existing memory devices face challenges in efficiently regulating voltages across multiple dies, leading to space wastage and increased package size due to the use of internal capacitors, and external discrete capacitors are not cost-effective or space-efficient, especially in mobile applications.
Innovation Solution
Regulating voltages using capacitors on a second die, connected via conductive lines to components on a first die, which are isolated from memory cells, providing cost-effective and space-efficient voltage regulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If internal capacitors are used for voltage regulation on each die, then voltage regulation is achieved, but package size increases and space is wasted
Solution Approach 1:
The patent extracts the voltage regulation function from individual dies and consolidates it to a separate location. Specifically, voltage regulation is performed using capacitors and regulation circuitry on a second die (or external to the first die), allowing the first die to operate without dedicated internal regulation components, thus reducing its area and package size.
Solution Approach 2:
The patent implements a universal voltage regulation approach where a single regulation mechanism serves multiple dies. The second die provides voltage regulation for the first die, and potentially other components, eliminating the need for separate regulation circuitry on each die and reducing overall package size.
2Reliability
If external discrete capacitors are used for voltage regulation, then voltage regulation is achieved, but cost increases and space efficiency decreases
Solution Approach 1:
The patent merges the voltage regulation function with the memory device structure itself by implementing it on a second die within the same package. This integration eliminates the need for external discrete capacitors while maintaining effective voltage regulation, thereby reducing cost and improving space efficiency.
Solution Approach 2:
The patent introduces a second die as an intermediary component that provides voltage regulation services to the first die. This mediator approach allows regulation without requiring expensive external discrete capacitors, as the second die serves as an integrated intermediate solution within the package.
3Reliability
If internal capacitors are used on the first die, then voltage regulation is achieved, but die area is wasted
Solution Approach 1:
The patent extracts the voltage regulation function from the first die and relocates it to a second die. This extraction allows the first die to be dedicated solely to its primary function (e.g., memory storage), maximizing its usable area without the overhead of internal regulation capacitors.
Solution Approach 2:
The patent segments the voltage regulation function from the main functional die. By separating regulation circuitry onto a second die, the first die's area is optimized for its primary purpose, while the second die handles the regulation function, achieving efficient area utilization across the system.
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 enhances reliability and reduces package size while maintaining voltage regulation efficiency, addressing the limitations of internal and external capacitors.
Implementation Method 1
the voltage produced by the component may be regulated by a capacitor
Data Source
AI summary
Methods, systems, and devices for die voltage regulation are described. A device may include a first die and second die. A component that generates voltage on the first die may be connected to a capacitor on the second die through a conductive line. The conductive line may allow the capacitor on the second die to regulate voltage generated by the component on the first die.