Active Interposer Switching for Voltage Control
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Solution Overview
Problem
Integrated circuit devices face challenges in efficiently managing different voltage levels across logic regions due to voltage drops and the need for additional space to accommodate switches, which can lead to increased power leakage and reduced performance.
Innovation Solution
The use of an active interposer with embedded switching elements that can provide different power supply signals to various logic regions, allowing for the selection and distribution of appropriate voltage levels, thereby minimizing voltage drops and optimizing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If switches are placed within their respective logic regions to control voltage islands, then voltage control and power management are improved, but the area of the integrated circuit increases due to additional space needed for switches
Solution Approach 1:
The patent moves the switching elements from the traditional planar location within logic regions to a three-dimensional location on the underside of the substrate. This dimensional transition allows switches to be positioned outside the main circuit area while maintaining electrical connection to logic regions through vertical vias, thereby controlling voltage islands without increasing the footprint of the integrated circuit.
Solution Approach 2:
The patent introduces an intermediate layer of conductive vias that connect the underside-mounted switches to the logic regions on the top surface of the substrate. These vias act as intermediaries, transmitting control signals and power from the switches located on the bottom surface to the logic regions on the top surface, enabling voltage control without direct placement of switches within logic regions.
2Reliability
If switches are made sufficiently large to mitigate IR drop problems, then voltage stability is improved, but the area of the integrated circuit increases
Solution Approach 1:
By relocating switches to the underside of the substrate, the patent allows these components to be made larger without consuming area within the logic regions. The increased size of switches on the bottom surface reduces their resistance and mitigates IR drop problems, while the vertical via connections maintain electrical functionality without expanding the top-down footprint of the circuit.
3Adaptability or versatility
If additional area is reserved for switches to control logic regions, then power management capability is improved, but the productivity of the integrated circuit decreases
Solution Approach 1:
The patent utilizes the third dimension (vertical space on the underside of the substrate) to house switching elements and power management circuitry. This approach provides enhanced power management capability with multiple switches for controlling different logic regions while maintaining high circuit density on the top surface, as the additional components do not occupy planar area within the active circuit region.
Data Source
AI summary
An integrated circuit package may include a substrate and an interposer. The interposer is disposed over the substrate. The interposer may include embedded switching elements that may be used to receive different power supply signals. An integrated circuit with multiple logic blocks is disposed over the substrate. The switching elements embedded in the interposer may be used to select a power supply signal from the power supply signals and may be used to provide at least one circuit block in the integrated circuit with a selected power supply signal.