Low Voltage Detector Dynamic Mode Control
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Solution Overview
Problem
Existing brownout detection circuits in electronic systems face a trade-off between response time and power consumption, often resulting in insufficient time to retain logic states and register values during power supply failures due to high power consumption or slow operation.
Innovation Solution
A low voltage detection system that includes a voltage monitoring device and a mode control device, which transitions from a low power mode to a fast response mode by adjusting the current supplied to the voltage monitoring device, allowing for quick detection of brownout events while minimizing power consumption during normal operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the brownout detection circuit operates in high power consumption mode, then the response time to brownout events is improved, but the power consumption increases
Solution Approach 1:
The patent implements a voltage monitoring device that can dynamically switch between two operational modes: a first mode with higher current draw for faster response time, and a second mode with lower current draw for reduced power consumption. The mode control device selects the appropriate mode based on system conditions, allowing the response time and power consumption to be optimized dynamically rather than being fixed.
Solution Approach 2:
The patent changes the operational parameters of the voltage monitoring device by adjusting the current draw level. By switching between a first current level (higher) and a second current level (lower), the system can alter the response characteristics and power consumption of the brownout detection circuit, thereby resolving the contradiction between fast response and low power usage.
2Use of energy by moving object
If the brownout detection circuit operates slowly with low power consumption, then the power consumption is reduced, but the response time to brownout events increases
Solution Approach 1:
The system dynamically adjusts its operational mode based on conditions. When brownout events are detected or suspected, the mode control device switches to the first mode with higher current and faster response. During normal operation, it operates in the second mode with lower power consumption, thus adapting the response time to match the operational context.
Solution Approach 2:
The patent enables the system to prepare for potential brownout events by having the capability to quickly switch to high-speed detection mode when conditions warrant it. This preliminary preparation allows the system to maintain low power consumption during normal operation while being ready to respond rapidly when needed.
Data Source
AI summary
An apparatus includes a voltage monitoring device to generate a brownout indication signal in response to a change in a power supply voltage. The apparatus also includes a mode control device to control a temporal response of the voltage monitoring device to the change in the power supply voltage based, at least in part, on a voltage level of the power supply voltage.