Semiconductor Power Voltage Drop Detection Circuit
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Solution Overview
Problem
Semiconductor devices face challenges in efficiently managing and monitoring power voltage stability, particularly when external power is unstable or electrical loads within the device are excessive, leading to voltage drops that can affect device performance and cause errors.
Innovation Solution
The implementation of a power circuit with multiple sensing circuits and a comparison circuit that detects power voltage drops across multiple pins or pads, allowing for the adjustment of external power voltage to compensate for internal voltage fluctuations without directly affecting the internal power voltage, thereby maintaining stability and identifying the location of voltage drops.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a sensing circuit is used to monitor voltage output from the regulator, then voltage drops can be detected, but the monitoring process may be affected by electrical noise and interference
Solution Approach 1:
The patent introduces a dedicated sensing circuit that acts as an intermediary between the power distribution network and the monitoring system. This sensing circuit is specifically designed to detect voltage drops without being significantly affected by electrical noise, thereby providing accurate voltage monitoring while isolating the main system from noise interference.
Solution Approach 2:
The patent creates a simplified copy of the power monitoring function through a dedicated sensing circuit that mirrors the voltage conditions without handling the full power load. This copying approach allows for accurate voltage detection while minimizing the impact of electrical noise and interference on the monitoring system.
2Reliability
If multiple sensing circuits are implemented to monitor different regions, then comprehensive voltage monitoring is achieved, but device complexity increases
Solution Approach 1:
The patent divides the power monitoring function into multiple sensing circuits, each responsible for monitoring voltage drops in specific regions or pins of the semiconductor device. This segmentation allows for comprehensive voltage monitoring across different power distribution points while maintaining manageable circuit complexity through modular design.
Solution Approach 2:
The patent designs the sensing circuits with universal functionality, where each sensing circuit can monitor voltage drops across multiple pins or pads. This multi-functionality reduces the overall number of sensing circuits needed, thereby decreasing device complexity while still achieving comprehensive voltage monitoring coverage.
Data Source
AI summary
A power circuit includes at least one power detector coupled to both a first power voltage input via a pin or pad and a second power voltage supplied into a component, and configured to output a sensed power voltage changed from the first power voltage in response to a drop of the second power voltage, and a comparator configured to compare the sensed power voltage with a reference voltage to output a power sensing result.