Logic Controller Circuit for Low Power Serial Bus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing serial bus systems face challenges in providing low power solutions with high accuracy and efficiency, particularly in managing power delivery and consuming less current during hibernation modes, while accommodating variations in process, voltage, and temperature.
Innovation Solution
A logic controller circuit with analog and digital components that includes trimming circuitry for configuring analog components, capable of switching between active and hibernation modes, and a voltage regulator circuit that enables power management by determining threshold voltage levels to optimize power delivery and consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the digital circuitry operates in active mode to provide full functionality, then the power delivery control and communication capabilities are improved, but the current consumption increases
Solution Approach 1:
The digital circuitry dynamically switches between active mode and hibernation mode based on operational requirements. The reset generation circuit monitors voltage thresholds and transitions the circuitry between modes, enabling full functionality when needed while reducing current consumption during low-activity periods.
Solution Approach 2:
The system changes operational parameters by adjusting the power state of digital circuitry. The reset generation circuit detects voltage threshold crossings and modifies the operational mode accordingly, transitioning from active to hibernation state to optimize the balance between functionality and power consumption.
2Speed
If the voltage regulator circuit enables early to ensure sufficient voltage supply, then the power delivery speed is improved, but the risk of unstable operation increases
Solution Approach 1:
The reset generation circuit implements voltage threshold monitoring with feedback control. It detects when the supply voltage reaches the first threshold and when the regulated voltage reaches the second threshold, enabling the voltage regulator at the appropriate moment to ensure stable operation while maintaining fast response.
Solution Approach 2:
The system performs preliminary voltage threshold detection before enabling the voltage regulator. The reset generation circuit monitors voltage levels in advance and triggers regulator enablement only when predetermined threshold conditions are met, ensuring readiness without premature activation.
3Manufacturing precision
If trimming circuitry is added to configure analog components for high accuracy, then the manufacturing precision is improved, but the device complexity increases
Solution Approach 1:
Trimming circuitry is selectively applied only to analog components that require high precision, such as reference voltage generators and current sources. This localized approach improves manufacturing precision for critical components while minimizing the overall increase in device complexity.
Data Source
Figure 1A
Figure 1B
Figure 2
AI summary
Low power solutions can be provided in a serial bus system with a logic controller circuit. The logic controller circuit can include analog circuitry that includes a plurality of analog components and trimming circuitry for configuring the analog components. Digital circuitry can be configured to switch between an active mode and a hibernation mode, wherein the hibernation mode consumes less current than the active mode. A voltage regulator circuit can be configured to generate a regulated voltage from a supply voltage. A reset generation circuit can be configured to determine that the supply voltage has reached a first threshold voltage level and enable the voltage regulator circuit. When the regulated voltage has reached a second threshold voltage level and the supply voltage has reached a third threshold voltage level, the digital circuitry can be switched to the active mode.