Multi-Chip Package Enable Signal Circulation for Voltage Stability
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Solution Overview
Problem
In multi-chip semiconductor packages, overlapping peak current operations among semiconductor chips can cause voltage drops, leading to malfunctions due to miniaturization and the need for low-level voltage control.
Innovation Solution
A multi-chip package system where semiconductor chips perform operations based on an enable control signal that circulates among them, preventing peak current operations from overlapping by using a controller to select and generate the signal based on operation information or select signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple semiconductor chips operate simultaneously in a multi-chip package, then productivity and performance are improved, but peak current overlap causes voltage drops leading to malfunctions
Solution Approach 1:
The patent implements periodic action by sequentially enabling peak current operations across multiple semiconductor chips using a circulating enable control signal. Instead of allowing simultaneous operations, the system activates chips in a time-multiplexed manner where each chip receives the enable signal in sequence, ensuring that peak current operations occur periodically but non-overlappingly. This resolves the contradiction by maintaining high productivity through continuous operation while preventing voltage drops by staggering peak current demands.
Solution Approach 2:
The patent applies preliminary action by having the enable control signal circulate through the semiconductor chips before each peak current operation occurs. The controller pre-coordinates operation schedules and sends enable signals in advance to specific chips, allowing them to prepare for peak current operations at predetermined times. This prevents simultaneous peak current events by establishing operation sequences beforehand, thus maintaining voltage stability while achieving high throughput.
2Productivity
If semiconductor chips are miniaturized to increase integration density, then device complexity is reduced and productivity increases, but control precision deteriorates due to low-level voltage requirements
Solution Approach 1:
The patent applies segmentation by dividing the multi-chip package into independently controllable operational units. Each semiconductor chip is equipped with individual enable control signals that can be activated independently. This segmentation allows the system to control peak current operations at the chip level, preventing simultaneous activation that would cause voltage drops. By segmenting control, the system maintains precise voltage control despite miniaturization and high integration density.
3Reliability
If an enable control signal circulates among semiconductor chips to coordinate operations, then voltage stability is improved, but device complexity increases due to signal circulation infrastructure
Solution Approach 1:
The patent applies merging by combining multiple control functions into a single circulating enable control signal. Rather than implementing separate control circuits for each chip, the system uses one signal that traverses through all chips in sequence, performing coordination, timing, and enablement functions simultaneously. This merging approach maintains voltage stability through coordinated operation while minimizing the added complexity by using a unified control mechanism rather than multiple independent control systems.
Data Source
AI summary
A multi-chip package includes first and second semiconductor chips each configured to perform first and second operations having different current consumptions. The first and second semiconductor chips perform the first operation in response to an enable control signal transmitted from one of the first and second semiconductor chips to the other and transmitted from the other back to the one.