Semiconductor Amplifier Voltage Divider Dynamics
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Solution Overview
Problem
Semiconductor devices face challenges in achieving quick circuit activation while minimizing power consumption in steady states, and addressing element dispersion that leads to amplifier output fluctuations.
Innovation Solution
A semiconductor device with an amplifier and a voltage divider system, including first and second voltage dividing paths with adjustable resistance, and switching circuits to control current flow, allowing for dynamic adjustment of current amounts and mitigating element dispersion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If current is increased to speed up circuit activation, then activation speed is improved, but power consumption in steady state increases
Solution Approach 1:
The patent applies dynamics by making the resistance values of the voltage dividing paths adjustable during operation. The switching circuit changes the resistance configuration from a high-resistance state during activation (to speed up response) to a low-resistance state in steady state (to reduce power consumption), allowing the system to adapt its electrical characteristics based on operational phase
Solution Approach 2:
The patent changes the resistance parameter of the voltage divider dynamically. By switching between different resistance configurations in the first and second voltage dividing paths, the system adjusts the current flow and power consumption levels according to whether it is in activation or steady state, directly resolving the contradiction between speed and energy use
2Use of energy by moving object
If current is reduced to lower power consumption in steady state, then power consumption is improved, but circuit activation speed decreases
Solution Approach 1:
The system dynamically switches resistance configurations based on operational state. During activation, high resistance is used to limit current and save power, while during steady state, low resistance is used to enable quick response when current increase is needed, effectively reversing the typical trade-off timing
Solution Approach 2:
The switching circuit periodically or conditionally changes the resistance state of the voltage divider, alternating between high-resistance (power-saving) and low-resistance (speed-optimizing) modes according to the circuit's operational requirements, enabling both low power consumption and fast activation
3Ease of manufacture
If element dispersion is present, then manufacturing is simplified, but amplifier output stability deteriorates
Solution Approach 1:
The patent uses feedback by feeding back a portion of the amplifier output through the voltage divider to the inverting input. This negative feedback mechanism compensates for variations caused by element dispersion, automatically adjusting the output to maintain stability despite manufacturing variations in the amplifier components
Solution Approach 2:
The switching circuit changes the feedback ratio by selecting different resistance combinations in the voltage dividing paths. This allows dynamic adjustment of the feedback amount to compensate for element dispersion and maintain amplifier output stability across different operating conditions and manufacturing variations
Data Source
AI summary
There is to provide a semiconductor device capable of activating a circuit quickly, operating with a lower power consumption in a steady state, and coping with the dispersion of the elements. The semiconductor device includes an amplifier coupled to a power voltage, to output a voltage based on a reference voltage and a voltage of a negative feedback node, to an output node; and a voltage divider coupled to the output node, to output the divided voltage to the negative feedback node. The voltage divider includes first and second voltage dividing paths with different resistance, a first switching circuit coupled to the first and the second voltage dividing paths, in a dividing ratio adjustable way, and a second switching circuit for controlling the first and the second voltage dividing paths.