Energy Borrowing Structure for IC Voltage Drop Reduction
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Solution Overview
Problem
Integrated circuits face performance bottlenecks due to excessive current sinking, which lowers supply voltage, and existing solutions like additional decoupling capacitors or external power sources are either unsuitable for small IC sizes or complicate the design.
Innovation Solution
An energy borrowing structure with low resistance is implemented to supply unused stored energy from source components in other sections of the IC to the sinking component, stabilizing the supply voltage without adding extra capacitors or complex routing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If additional decoupling capacitors are added to provide more current to the sinking component, then the voltage stability improves, but the IC package size increases and manufacturing cost rises
Solution Approach 1:
The patent merges the decoupling capacitor function into the power switch device itself by integrating a second capacitor coupled to the control electrode. This integration allows the power switch to provide additional current during switching transitions without requiring separate external decoupling capacitors, thereby maintaining voltage stability while reducing IC package size.
Solution Approach 2:
The power switch device is designed to perform multiple functions: it acts as both the switching element and the decoupling element. The second capacitor integrated into the power switch provides decoupling functionality that was previously required from separate components, allowing one component to serve universal purposes and reduce overall circuit complexity and size.
2Stability of the object's composition
If external power sources are used to supply additional current to the sinking component, then the voltage stability improves, but the system complexity and routing complexity increase
Solution Approach 1:
The patent combines the decoupling capacitor and power switch into a single integrated device, eliminating the need for external power sources and complex routing. The integrated second capacitor is directly coupled to the control electrode of the power switch, providing a simple internal current path that avoids external routing complexity.
Solution Approach 2:
The power switch device serves itself by integrating the decoupling capacitor internally. During switching transitions, the second capacitor provides the necessary current to the control electrode without requiring external power sources or complex routing, allowing the device to self-regulate its own switching behavior and maintain voltage stability.
3Productivity
If the sinking component draws excessive current, then the switching performance improves, but the supply voltage drops and system performance deteriorates
Solution Approach 1:
The second capacitor is pre-charged during the off-state of the power switch and is positioned to provide current to the control electrode during the on-transition. This preliminary energy storage ensures that when the switch needs to turn on rapidly, the control electrode receives the necessary current immediately from the integrated capacitor, enabling high switching performance without excessive voltage drop.
Solution Approach 2:
By integrating the second capacitor with the power switch, the system enables the sinking component to draw excessive current during switching transitions without causing supply voltage drop. The merged structure provides a local current source that satisfies the high current demand during switching while maintaining overall supply voltage stability.
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 effectively reduces voltage fluctuations, improves IC performance by minimizing energy loss and fly time, and enhances overall system stability with reduced manufacturing costs.
Implementation Method 1
a structure to provide the stored energy from the at least one sourcing component to the sinking component
Data Source
AI summary
An integrated circuit (IC) includes a first section having a sinking component sinking excessive current. A second section includes at least one sourcing component that, in operation, stores energy. A structure is provided to provide the stored energy from the at least one sourcing component to the sinking component, the stored energy being utilized by a load component included within the second section.