Compensation Voltage Circuit for Stable DRAM Memory Supply
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Solution Overview
Problem
As memory cells in DRAMs are increasingly integrated, voltage fluctuations occur in control circuits, leading to inaccurate voltages provided to the memory cells, necessitating an improved voltage generating circuit for enhanced accuracy.
Innovation Solution
A voltage generating circuit comprising a voltage output module, a voltage stabilizing module, and a compensation module that stabilizes the power supply node voltage by generating a second output voltage in response to a flag signal, ensuring the voltage remains at a first output voltage level despite load consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If memory cells are increasingly integrated to improve storage density, then storage capacity increases, but voltage fluctuations occur in control circuits leading to reduced voltage accuracy
Solution Approach 1:
The voltage generating circuit is segmented into multiple functional modules: a voltage output module for generating the initial voltage, a voltage stabilizing module for maintaining voltage levels, and a compensation module for correcting voltage fluctuations. This segmentation allows each module to specialize in a specific aspect of voltage management, thereby maintaining voltage accuracy despite high integration density.
Solution Approach 2:
The compensation module receives a control signal from the voltage stabilizing module and uses feedback mechanisms to detect and correct voltage fluctuations at the power supply node. This closed-loop feedback system continuously monitors and adjusts the voltage to compensate for fluctuations caused by load variations in highly integrated memory circuits.
2Ease of operation
If more components are connected to control circuits to enable one-by-one control of memory cells, then control precision improves, but voltage fluctuations increase reducing voltage stability
Solution Approach 1:
The voltage stabilizing module acts as an intermediary between the voltage output module and the power supply node. It receives the generated voltage and conditions it before supplying to the power supply node, isolating the sensitive control circuits from voltage fluctuations caused by multiple connected components.
Solution Approach 2:
The compensation module dynamically changes electrical parameters (voltage levels) in response to detected fluctuations. By adjusting the compensation voltage based on the control signal, the system maintains stable power supply voltage despite variations in control circuit loading from multiple connected components.
3Measurement precision
If a voltage generating circuit is added to improve voltage accuracy, then voltage precision improves, but circuit complexity increases
Solution Approach 1:
The voltage output module, voltage stabilizing module, and compensation module are merged into a single integrated voltage generating circuit. This consolidation achieves high voltage precision through coordinated operation of multiple functions while avoiding the complexity of separate discrete circuits, as the modules share common structures and signals within the unified circuit design.
Data Source
AI summary
The present disclosure provides a voltage generating circuit and a memory. The voltage generating circuit includes: a voltage output module configured to receive a reference voltage, generate a first output voltage, and provide the first output voltage to a power supply node, where the power supply node is connected to a load to supply power to the load; a voltage stabilizing module configured to receive the reference voltage and generate and output a control signal; and a compensation module configured to receive a power voltage, a flag signal and the control signal, be turned on in response to the flag signal, and configured to provide a second output voltage to the power supply node in response to a voltage value of the control signal, such that a voltage of the power supply node is recovered to the first output voltage.