Voltage Generator System for Non-Volatile Memory

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Solution Overview

Problem

Conventional non-volatile memory systems require multiple voltage generator systems to control temperature-dependent and temperature-independent voltage components for different operational modes, leading to increased cost and space usage.

Innovation Solution

A system that includes a temperature-dependent voltage generator and a temperature-independent voltage generator, combined with a time multiplexing system to select input values for controlling voltage components, allowing independent control of temperature-dependent and temperature-independent voltage components across multiple operational modes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If multiple voltage generator systems are used to control temperature-dependent and temperature-independent voltage components for different operational modes, then precise voltage control is achieved, but device complexity and space usage increase

Engineering Contradiction:

Improvevoltage control precisionVSAvoidvoltage generator system complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent combines multiple voltage generator systems into a single integrated system that can generate both temperature-dependent and temperature-independent voltage components. The voltage generator includes a temperature sensor, a temperature-dependent voltage generator, and a temperature-independent voltage generator, all integrated into one unit that can operate across multiple operational modes (read mode, program mode, verify mode) without requiring separate generator systems for each mode.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The voltage generator system is designed to be universal and multi-functional, capable of operating in multiple operational modes (read mode, program mode, verify mode) while independently controlling temperature-dependent and temperature-independent voltage components. This single system replaces what would traditionally require multiple separate voltage generator systems, making the device more versatile without increasing complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Adaptability or versatility

If separate voltage generator systems are used for different operational modes, then mode-specific voltage control is achieved, but manufacturing cost increases

Engineering Contradiction:

Improveoperational mode adaptabilityVSAvoidmanufacturing cost

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The patent merges multiple voltage generator systems into one integrated unit that can handle all operational modes (read, program, verify). This consolidation reduces the total number of components that need to be manufactured and assembled, thereby lowering manufacturing costs while maintaining the ability to adapt to different operational modes through internal mode detection and automatic configuration.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The voltage generator is designed as a universal system that can adapt to multiple operational modes without requiring separate generator systems for each mode. This multi-functionality reduces the bill of materials and assembly complexity, directly impacting manufacturing cost positively while preserving operational versatility.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If multiple voltage generator systems are implemented, then comprehensive voltage control for all modes is achieved, but power consumption increases

Engineering Contradiction:

Improveoperational mode coverageVSAvoidpower consumption

Core Design Contradiction:

Adaptability or versatilityVSUse of energy by moving object

Solution Approach 1:

The patent combines multiple voltage generator systems into a single integrated system that serves all operational modes (read, program, verify). This consolidation eliminates redundant components and reduces overall power consumption while maintaining comprehensive voltage control across all modes through efficient resource sharing and mode-specific activation.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The voltage generator system employs periodic action by activating specific voltage generation components only when needed for particular operational modes. The system detects the current mode and selectively enables the appropriate voltage generation pathways, reducing unnecessary power consumption while ensuring comprehensive voltage control is available when required.

Inventive Principle:

Principle #19Periodic action

Data Source

PatentUS7403434B1System for controlling voltage in non-volatile memory systems

Publication Date: 2008.07.22 SANDISK TECHNOLOGIES LLC

AI summary

System for a non-volatile memory system is provided. The non-volatile memory system includes a voltage generator system operating in one of a plurality of modes for generating a voltage applied to a memory cell of the non-volatile memory system. For one of the plurality of modes, a first input value is selected for controlling a temperature dependent component of the voltage and a second input value is selected for controlling a temperature independent component of the voltage. The temperature dependent component of the voltage and the temperature independent component of the voltage are controlled independently in response to the first input value and the second input value.