Voltage Regulation Circuit Dynamic Threshold Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional semiconductor voltage regulation circuits face challenges in reducing circuit area while maintaining or increasing current driving force, as larger transistors are required to enhance current driving capability, leading to increased parasitic capacitance and degraded operation speed.
Innovation Solution
A voltage regulation circuit design that includes a first and second current driving force control unit, a current driving unit, and a voltage divider, which dynamically adjusts the threshold voltage of transistors based on the regulation voltage level to control current driving force without increasing transistor size, using a differential amplifier and voltage dividers to generate control signals that adjust the current driving force in response to voltage variations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the size of the PMOS transistor is increased to enhance current driving force, then the current driving capability is improved, but the circuit area increases and parasitic capacitance increases leading to degraded operation speed
Solution Approach 1:
The patent changes the threshold voltage parameter of the PMOS transistor dynamically through a control voltage signal. By adjusting the threshold voltage based on the output voltage level, the transistor can achieve enhanced current driving force without increasing its physical size, thus resolving the contradiction between current driving capability and circuit area.
2Power
If the size of the PMOS transistor is increased to enhance current driving force, then the current driving capability is improved, but the parasitic capacitance increases leading to degraded operation speed
Solution Approach 1:
The patent dynamically adjusts the threshold voltage parameter of the PMOS transistor using a control voltage generated by the voltage divider and comparison circuitry. This parameter change enables the transistor to deliver higher current driving force without increasing its size, thereby avoiding increased parasitic capacitance and maintaining high operation speed.
3Power
If the transistor size is increased to increase current driving force, then the current output capability is improved, but the circuit area increases
Solution Approach 1:
The patent employs dynamic threshold voltage adjustment through a control circuit that monitors the output voltage and generates an appropriate control signal. This allows the PMOS transistor to achieve increased current driving force through parameter modulation rather than size increase, thereby maintaining a compact circuit area.
4Area of moving object
If conventional voltage regulation circuit is used with fixed transistor size, then the circuit area is reduced, but the current driving force is insufficient and leakage current cannot be prevented
Solution Approach 1:
The patent transforms the static transistor configuration into a dynamic one by introducing a control voltage that adjusts the threshold voltage based on operating conditions. This dynamic adjustment enables the transistor to optimize its current driving force and prevent leakage current while maintaining a small circuit area, resolving the contradiction between compact size and sufficient current capability.
Data Source
AI summary
A voltage regulation circuit includes: a first voltage divider that divides a regulation voltage with a predetermined division ratio to generate a division voltage; a first current driving force control unit configured to compare a reference voltage with the division voltage and generate a first control signal; a current driving unit configured to generate a driving current with a variable driving force based on the first control signal and a second control signal, and generate the regulation voltage; and a second current driving force control unit configured to generate the second control signal in accordance with a level variation of the regulation voltage.