Voltage Regulation Device Dynamic Load Stabilization
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Solution Overview
Problem
Existing voltage regulation devices fail to maintain stable output voltage when the loading current increases suddenly, leading to instability in load circuits due to a constant reference voltage, causing output voltage to drop and potentially resulting in abnormal operations.
Innovation Solution
A voltage regulation device comprising a first bias current source, a first transistor, a bias resistor, a second transistor, a second bias current source, and a detection adjustment circuit, which includes a compensation current source, a third transistor, and a fourth transistor, allowing for dynamic adjustment of the output voltage by increasing the control voltage of the second transistor when load current increases, thereby maintaining a stable output voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a constant reference voltage is used to regulate output voltage, then the circuit structure is simple, but the output voltage becomes unstable when load current increases suddenly
Solution Approach 1:
The patent implements a feedback mechanism where the detection adjustment circuit continuously monitors the output voltage and adjusts the control voltage of the second transistor accordingly. When load current increases and output voltage drops, the circuit detects this change and increases the control voltage to restore the output voltage to its predetermined level, creating a closed-loop control system that maintains voltage stability.
Solution Approach 2:
The patent transitions from a static reference voltage system to a dynamic control system. The control voltage of the second transistor is no longer fixed but is dynamically adjusted by the detection adjustment circuit based on real-time output voltage conditions. This dynamic adjustment allows the system to adapt to changing load conditions and maintain stable output voltage.
2Power
If the transistor generates greater current to meet increased load demand, then the power supply capability is improved, but the output voltage is pulled down to a lower level
Solution Approach 1:
The detection adjustment circuit anticipates and counteracts the voltage drop before it significantly impacts the output. By continuously monitoring the output voltage and immediately adjusting the control voltage of the second transistor in response to load changes, the circuit applies a preliminary corrective action that prevents the output voltage from being pulled down to problematic levels.
Data Source
AI summary
A voltage regulation device includes a first transistor, a first bias current source, a bias resistor, a second transistor, a second bias current source, and a detection adjustment circuit. The first transistor is coupled to the first bias current source for outputting a reference voltage. The bias resistor is coupled to the first transistor for receiving a regulation current. The second transistor has a first terminal for receiving a system voltage, a second terminal for outputting an output voltage, and a control terminal for receiving the reference voltage. The second bias current source is coupled to the second terminal of the second transistor. The detection adjustment circuit is coupled to the first transistor and the second transistor. When the output voltage is too low, the detection adjustment circuit activates the compensation current source to increase the voltage at the control terminal of the second transistor.