Memory Power Supply Circuit for Voltage Fluctuation Write Protection
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Solution Overview
Problem
Existing memory systems face challenges in reducing power consumption, particularly in scenarios where power fluctuations can lead to data corruption during write operations in flash memory devices.
Innovation Solution
A power supply apparatus with a configuration that includes a step-up circuit, multiple step-down circuits, a switching device, a capacitor, and reverse-flow prevention diodes, allowing for efficient voltage generation and distribution to memory devices, with adaptive power routes based on input voltage thresholds to minimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If a single step-down circuit is used to generate voltage for the memory device, then the device complexity is reduced, but power consumption cannot be optimized during power fluctuations
Solution Approach 1:
The power supply circuit is segmented into multiple independent step-down circuits (first step-down circuit and second step-down circuit), each capable of operating autonomously. This segmentation allows the system to select between different power supply paths based on input voltage conditions, optimizing power consumption without requiring a complex centralized control mechanism.
Solution Approach 2:
The system changes the operating parameter (input voltage threshold) to determine which step-down circuit should be active. When the input voltage exceeds a predetermined threshold, the first step-down circuit operates; otherwise, the second step-down circuit operates. This parameter-based switching optimizes power consumption adaptively.
2Reliability
If voltage supply is interrupted during write operations to prevent data corruption, then data integrity is maintained, but write operation speed decreases
Solution Approach 1:
The system performs preliminary assessment of the input voltage level before initiating write operations. By detecting whether the input voltage exceeds the predetermined threshold, the system can proactively select the appropriate step-down circuit to ensure stable voltage supply throughout the write operation, preventing interruptions that would compromise data integrity while maintaining write speed.
Solution Approach 2:
The first step-down circuit acts as an intermediary power supply path that provides stable voltage transformation when input voltage is high. This intermediary circuit allows the system to maintain reliable voltage supply to the memory device during write operations without directly connecting high-voltage input to the memory, thus preventing data corruption while enabling continuous write operations.
3Use of energy by moving object
If the input voltage is directly supplied to the memory device, then power consumption is minimized, but voltage stability cannot be ensured during power fluctuations
Solution Approach 1:
The power supply system dynamically adapts its configuration based on real-time input voltage conditions. The switching between first and second step-down circuits is not static but responds dynamically to voltage fluctuations, ensuring that the memory device receives stable voltage regardless of input variations while minimizing power consumption through selective circuit operation.
Solution Approach 2:
The system incorporates voltage threshold detection that provides feedback on input voltage levels. Based on this feedback, the control logic determines whether to activate the first or second step-down circuit, creating a closed-loop system that maintains voltage stability while optimizing power consumption through condition-based circuit selection.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces power consumption and ensures data integrity during power fluctuations by maintaining voltage supply to memory devices, particularly during write operations, thereby preventing data corruption.
Implementation Method 1
a step-up circuit disposed on the first coupling line at a location between the power supply terminal and the first step-down circuit, and configured to step up the input voltage supplied from the power supply terminal
Implementation Method 2
a first step-down circuit configured to generate a first output voltage to be supplied to the memory device, and a second step-down circuit configured to generate a second output voltage to be supplied to the memory device
Implementation Method 3
a capacitor disposed on the first coupling line at a location between the switching device and the first step-down circuit
Implementation Method 4
a first reverse-flow prevention diode disposed on the second coupling line at a location between the power supply terminal and the second step-down circuit
Data Source
AI summary
A power supply apparatus includes: a power supply terminal receiving an input voltage from outside; first and second step-down circuits respectively generating first and second output voltages to be supplied to a memory device; first and second coupling lines coupling the power supply terminal and the first and second step-down circuits, respectively; a step-up circuit disposed on the first coupling line at a location between the power supply terminal and the first step-down circuit, and stepping up the input voltage; a switching device disposed on the first coupling line at a location between the step-up circuit and the first step-down circuit; a capacitor disposed on the first coupling line at a location between the switching device and the first step-down circuit; and a first reverse-flow prevention diode disposed on the second coupling line at a location between the power supply terminal and the second step-down circuit.