3D Chip Power Delivery via Voltage Selection Logic
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Solution Overview
Problem
Three-dimensional (3D) integrated circuits face challenges with power delivery due to increased current density, heat generation, and varying voltage requirements across different dies, leading to thermal issues and power delivery problems.
Innovation Solution
A power delivery system for 3D integrated circuits that utilizes multiple supply voltages and voltage selection logic to dynamically adjust voltage levels based on die-specific requirements, using a power header to generate multiple voltages and voltage selection logic to select the appropriate voltage line for each die, allowing for flexible and efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single supply voltage is used for all dies in a 3D integrated circuit, then the power delivery system is simple, but it cannot accommodate varying voltage requirements of different dies leading to inefficiency and thermal issues
Solution Approach 1:
The power delivery system is segmented by providing multiple supply voltage lines (first voltage line, second voltage line) instead of a single unified voltage line. Each die can be connected to different voltage lines based on its specific voltage requirements, allowing the system to accommodate varying voltage needs while maintaining manageable complexity through modular voltage selection logic.
Solution Approach 2:
The system dynamically selects which voltage line to connect to each die using voltage selection logic that can switch between different voltage lines based on real-time power considerations. This dynamic adaptability allows the system to optimize power delivery for each die individually without requiring a completely complex static architecture.
2Productivity
If multiple supply voltages are provided to different dies, then voltage requirements can be met efficiently, but the power delivery system becomes more complex with multiple voltage lines and selection logic
Solution Approach 1:
The voltage selection logic serves multiple functions: it selects appropriate voltage lines for different dies, monitors power considerations, and dynamically adjusts connections. This multi-functional component enables the system to achieve high power delivery efficiency without proportionally increasing overall system complexity, as the same logic handles multiple voltage routing decisions.
Solution Approach 2:
The system changes the voltage parameter delivered to each die based on its specific requirements by selecting from multiple available voltage lines. This parameter flexibility allows efficient power delivery tailored to each die's needs while the selection logic manages the complexity of handling multiple voltage parameters through a unified control mechanism.
3Reliability
If voltage selection logic is implemented on each die, then voltage can be optimized for each die independently, but the overall device complexity increases
Solution Approach 1:
Each die is equipped with its own voltage selection logic that independently determines the appropriate voltage line based on its local power considerations and requirements. This local quality approach ensures that each die receives optimally tailored power delivery, improving reliability by allowing independent optimization without requiring complex centralized control for the entire 3D integrated circuit.
Data Source
AI summary
The present disclosure includes a three dimensional (3D) integrated device comprising a first die having a first supply line and a second die having a second supply line, a power header, and voltage selection logic. The power header is connected to the first die and the second die and configured to generate a first voltage on a first voltage line and a second voltage on a second voltage line. The voltage selection logic is connected to the first supply line and the second supply line and configured to select between the first voltage line and the second voltage line for each of the first supply line and the second supply line.