Variable Dead Band Power Generator for Memory Devices
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Solution Overview
Problem
Conventional power generators in semiconductor memory devices have a fixed dead band, which affects the stability and magnitude of the reference voltage, leading to increased current consumption and operational challenges, particularly in varying temperature and power modes.
Innovation Solution
A power generator system with a variable dead band is implemented, using a control device and control signal generator to adjust the upper and lower reference voltages based on operational modes, temperature, and voltage sensors to optimize the dead band range for reduced current consumption and improved voltage control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a fixed dead band is used in the power generator, then the circuit structure is simple, but the reference voltage stability deteriorates under varying temperature and power modes
Solution Approach 1:
The patent implements a variable dead band mechanism where the dead band width dynamically adjusts based on operating conditions (temperature, power mode). The control device receives sensor inputs and modifies the dead band parameters accordingly, transforming the fixed dead band into a dynamic parameter that adapts to environmental changes, thereby maintaining reference voltage stability across different operating conditions.
Solution Approach 2:
The patent changes the dead band parameter from a fixed value to a variable parameter that can be adjusted based on temperature and power mode. The control device modifies the upper and lower reference voltages dynamically, changing the dead band width to optimize reference voltage stability under varying operating conditions, directly addressing the stability issue without excessive circuit complexity.
2Device complexity
If a fixed dead band is used in the power generator, then the device complexity is low, but current consumption increases
Solution Approach 1:
The patent employs dynamic adjustment of the dead band width based on operating conditions. During low-power modes or stable temperature conditions, the dead band is reduced or eliminated, minimizing unnecessary current consumption. The control device actively manages the dead band parameter to reduce power usage while maintaining adequate reference voltage control only when necessary.
Solution Approach 2:
The patent modifies the dead band parameter dynamically to optimize power consumption. By adjusting the dead band width based on temperature and power mode sensors, the system reduces current consumption during conditions where tight voltage control is less critical, thereby lowering overall energy usage without requiring fundamentally more complex device architecture.
3Measurement precision
If a variable dead band is implemented with sensors and control devices, then reference voltage control is improved, but device complexity increases
Solution Approach 1:
The patent implements feedback control where temperature sensors and power mode sensors provide input to the control device, which adjusts the dead band parameters accordingly. This closed-loop feedback mechanism enables precise reference voltage control by continuously monitoring operating conditions and making real-time adjustments to the power generator's dead band, achieving high measurement precision while managing complexity through systematic control architecture.
Solution Approach 2:
The control device performs multiple functions: it receives temperature sensor inputs, processes power mode signals, adjusts dead band parameters, and controls reference voltage output. By consolidating these functions into a single control device rather than separate circuits for each function, the patent achieves precise reference voltage control while minimizing the increase in overall device complexity through functional integration.
4Use of energy by moving object
If a variable dead band is implemented, then power consumption is reduced, but device complexity increases
Solution Approach 1:
The patent implements periodic or conditional adjustment of the dead band based on operating mode transitions rather than continuous adjustment. The control device monitors power mode and temperature conditions, adjusting the dead band parameter only when conditions change, thereby reducing power consumption associated with constant parameter adjustment while minimizing the complexity overhead of the control mechanism.
Data Source
AI summary
Methods, devices, and systems are provided for a power generator system. The power generator system may include a control device configured to output a first reference voltage and a second reference voltage that define a dead band range. The control device may be configured to independently adjust the first reference voltage and the second reference voltage. The power generator system may also include a power generator operably coupled to the control device, and the power generator may be configured to receive the first reference voltage and the second reference voltage and to output a voltage that is greater than or substantially equal to the first reference voltage and less than or substantially equal to the second reference voltage.