Auxiliary Power Circuit With Adaptive Charging for Sudden Power Off
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Solution Overview
Problem
Memory systems face data loss and incomplete operations due to sudden power off (SPO), where the memory controller uses volatile memory and external power is abruptly cut off.
Innovation Solution
An auxiliary power supply system that converts external power into multiple charging voltages, charges a charging circuit with a first voltage, monitors the circuit's capacitance, and adjusts the charging voltage to a higher second voltage when capacitance falls below a reference level, providing auxiliary power when external power is unavailable.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the auxiliary power supply uses a single charging voltage, then the circuit design is simple, but the auxiliary power is insufficient when capacitance degrades
Solution Approach 1:
The auxiliary power supply dynamically adjusts the charging voltage based on the capacitance level of the charging circuit. When capacitance is high, it uses a first charging voltage; when capacitance degrades below a threshold, it switches to a second charging voltage that is higher by a predetermined amount, optimizing power delivery across different operational states
Solution Approach 2:
The system changes the voltage parameter of the charging circuit based on capacitance degradation. By monitoring capacitance levels and adjusting the charging voltage accordingly, the system maintains adequate auxiliary power output even as the charging circuit ages and capacitance decreases
2Reliability
If the auxiliary power supply monitors capacitance continuously, then the power delivery is optimized, but the circuit complexity increases
Solution Approach 1:
The auxiliary power supply incorporates a feedback mechanism that monitors the capacitance of the charging circuit and uses this information to control the charging voltage. The monitoring circuit provides feedback signals to the power supply, enabling it to adjust operating parameters based on the actual state of the charging circuit
Solution Approach 2:
The system performs self-diagnosis and self-adjustment by monitoring its own capacitance levels. The auxiliary power supply automatically detects capacitance degradation and adjusts its charging voltage without external intervention, enabling the system to optimize its own performance
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
Prevents data loss and ensures operational continuity by maintaining auxiliary power during SPO events, effectively managing capacitance and voltage levels within the charging circuit.
Implementation Method 1
converting an external power to a plurality of charging voltages
Implementation Method 2
monitoring a voltage of the charging circuit; when capacitance of the charging circuit is less than a first reference capacitance
Data Source
AI summary
A method of providing an auxiliary power by an auxiliary power supply. The method may include converting an external power to a plurality of charging voltages; charging a charging circuit with a first charging voltage of the plurality of charging voltages; monitoring a voltage of the charging circuit; when capacitance of the charging circuit is less than a first reference capacitance, charging the charging circuit with a second charging voltage of the plurality of charging voltages, the second charging voltage being higher than the first charging voltage by a first voltage amount; and providing an auxiliary power to outside the auxiliary power supply. The auxiliary power may be generated based on the voltage of the charging circuit.