Programming Voltage Supply with Sequential Generator Shutoff
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Solution Overview
Problem
Existing flash memory programming processes result in unnecessary power consumption due to continuous provision of programming voltage, which does not significantly alter the threshold voltage or drain-source current, leading to inefficiency and potential electromagnetic interference.
Innovation Solution
A programming voltage supply system with controllers and voltage generators that activate and sequentially turn off generators to adjust the programming voltage based on cut-off signals and a clock signal, transitioning between stages to optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If programming voltage is continuously provided to the drain structure, then the programming operation can be maintained, but unnecessary power consumption occurs when threshold voltage and drain-source current stabilize
Solution Approach 1:
The patent applies periodic action by dividing the programming operation into two stages: a first stage where multiple voltage generators are activated to provide programming voltage, and a second stage where voltage generators are sequentially turned off. This periodic switching pattern allows the system to maintain programming effectiveness while reducing power consumption during the stabilization phase when continuous voltage supply becomes unnecessary.
Solution Approach 2:
The patent implements dynamics by making the voltage generator configuration adjustable based on operational requirements. The system transitions from a static state where all voltage generators remain continuously activated to a dynamic state where voltage generators are selectively activated or deactivated based on whether the programming operation is in the first or second stage, optimizing power consumption at different operational phases.
2Power
If multiple voltage generators are activated simultaneously, then programming voltage can be provided with sufficient driving capability, but instantaneous current peaks and electromagnetic interference increase
Solution Approach 1:
The patent applies segmentation by dividing the voltage generation function across multiple independent voltage generators. During the first stage, all generators are activated to provide sufficient driving capability. During the second stage, the system sequentially turns off voltage generators one by one, breaking the simultaneous operation into discrete time segments. This segmentation reduces instantaneous current peaks and electromagnetic interference while maintaining the required power output.
Data Source
AI summary
A programming voltage supply and a programming voltage generating method are provided. The programming voltage supply includes a plurality of controllers and a plurality of voltage generators. The controllers respectively receive a plurality of cut-off signals, and commonly receive a clock signal. The controllers generate a plurality of activation signals according to the cut-off signals respectively. The voltage generators are configured to provide a programming voltage. In a first stage, the voltage generators are commonly activated to provide the programming voltage, and in a second stage, a plurality of first voltage generators of the voltage generators are sequentially turned-off one by one according to the corresponding activation signals respectively.