Integrated Package Power Sharing Across Core Power Planes
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Solution Overview
Problem
Existing packages with integrated devices struggle to optimize performance due to suboptimal power distribution, as separating power planes weakens the power distribution network and results in inadequate power allocation to cores, leading to subpar device performance.
Innovation Solution
Incorporating switches in the substrate to enable sharing of power resources between cores, allowing for rerouting of power from one core to another based on need, using transistors with gate, source, and drain interconnects to control power flow through power planes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If power planes are separated to provide dedicated power paths to each core, then power allocation control is improved, but the power distribution network strength deteriorates
Solution Approach 1:
The power distribution network is segmented into multiple power planes, with each plane dedicated to specific cores. This segmentation enables independent power allocation control to each core while maintaining a structured network architecture that preserves overall strength through organized distribution paths.
Solution Approach 2:
Switches are introduced into the power distribution network to enable dynamic rerouting of power between planes and cores. This dynamic capability allows the system to adapt power allocation in real-time based on computational demands, improving adaptability while the switches maintain network integrity through controlled connectivity.
2Adaptability or versatility
If switches are added to enable power sharing between cores, then power resource flexibility is improved, but device complexity increases
Solution Approach 1:
The switches serve multiple functions: they enable power sharing between cores, allow dynamic power allocation, and maintain network integrity. This multi-functionality justifies the added complexity by providing comprehensive power management capabilities that benefit overall system performance and adaptability.
Solution Approach 2:
Switches act as intermediary components between power planes and cores, mediating power flow to achieve flexible allocation. These intermediary elements enable sophisticated power management while isolating the complexity from the cores themselves, allowing the cores to receive optimized power without directly managing the complexity of power distribution.
3Device complexity
If power is statically allocated to each core, then power distribution simplicity is maintained, but device performance deteriorates due to inadequate power allocation
Solution Approach 1:
The power distribution system transitions from static to dynamic allocation through the introduction of controllable switches. This enables the system to adapt power distribution to real-time computational demands of each core, significantly improving device performance while maintaining manageable complexity through systematic control mechanisms.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor power demands of different cores and dynamically adjust power allocation accordingly. This feedback-driven approach ensures that each core receives adequate power based on its actual computational needs, optimizing overall device performance while maintaining a relatively simple control architecture.
Data Source
AI summary
A package that includes a substrate and integrated device coupled to the substrate. The integrated device includes a first core and a second core. The substrate includes a first power interconnect configured to provide a first electrical path for a first power resource to the first core of the integrated device. The first power interconnect includes a first power plane. The substrate includes a second power interconnect configured to provide a second electrical path for a second power resource to the second core of the integrated device. The second power interconnect includes a second power plane. The substrate includes a switch coupled to the first power interconnect and the second power interconnect, where if the switch is turned on, the switch is configured to enable at least some of the power resource from the second power resource to contribute to the first core of the integrated device.