Semiconductor Standby Mode Current Variation Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In semiconductor devices with a standby mode, current variation amounts often exceed predetermined values during transitions between normal operating states and standby modes, leading to inefficient current usage and prolonged transition times.
Innovation Solution
A semiconductor device with a control circuit that predicts current variation values using register information and current profile data, optimizing the control of a constant current source to minimize current variation and transition time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If current variation is controlled with a predetermined setting at transition to standby mode, then the transition process is simple, but current more than needed flows wastefully from current source
Solution Approach 1:
The control circuit predicts the current variation value in advance by acquiring register information indicating the operating state before standby mode and current profile information, then determines the optimal current variation amount before the transition occurs. This preliminary prediction and determination prevents wasteful current flow by preparing the appropriate control parameters ahead of time.
Solution Approach 2:
The invention dynamically adjusts the current variation amount based on the predicted operating state and current profile. Instead of using a fixed predetermined setting, the control circuit varies the current control amount according to the specific transition requirements, optimizing current usage while maintaining transition simplicity.
2Ease of operation
If current variation is controlled with a predetermined setting, then the control process is straightforward, but the transition time is prolonged
Solution Approach 1:
The control circuit performs current variation prediction and determination in advance by acquiring register information and current profile information before the mode transition. This preliminary action allows the optimal current variation amount to be ready beforehand, enabling faster transition without complex real-time adjustments during the transition process.
Solution Approach 2:
The invention replaces traditional hardware monitor circuits with a software-based prediction method using register information and current profiles. This substitution eliminates the need for complex hardware circuits while achieving accurate current variation control, thereby reducing transition time without sacrificing control simplicity.
3Measurement precision
If a dedicated hardware monitor circuit is used to predict current variation, then prediction accuracy is high, but device complexity increases
Solution Approach 1:
The invention replaces dedicated hardware monitor circuits with a software-based prediction method that uses existing register information and current profile data. This substitution maintains high prediction accuracy by utilizing available operational data while eliminating the need for additional hardware circuits, thereby reducing device complexity.
Solution Approach 2:
Instead of using physical monitor circuits, the invention creates a virtual model of current behavior by storing current profiles and using register information to predict current variation. This copying approach replicates the functionality of hardware monitoring through software, achieving the same prediction accuracy without the hardware overhead.
Data Source
AI summary
A semiconductor device includes a control circuit configured to suppress a current variation by turning on or off a constant current source when transitioning to a standby mode. The control circuit has a function of predicting a current variation value from register information and information of current profile. The control circuit has a function of optimizing single control amount of the current source and the number of times of control of the current source based on the predicted current variation value.