Voltage Regulator Circuit with Segmented Auxiliary Branches
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Solution Overview
Problem
Traditional voltage regulator circuits face limitations in handling high output currents, leading to reduced output voltage and overheating issues due to excessive current demand.
Innovation Solution
A voltage regulator circuit comprising a main regulator and multiple auxiliary regulators, where each regulator provides a branch current of equal magnitude, allowing shared output current distribution to manage high loads and disperse heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a single voltage regulator is used, then the circuit structure is simple, but the output current capability is limited and overheating occurs
Solution Approach 1:
The voltage regulator system is segmented into a main regulator and multiple auxiliary regulators. Each regulator operates independently to provide a portion of the total output current, thereby increasing the overall current capability while distributing the power dissipation to prevent overheating. The auxiliary regulators are coupled to the main regulator through current mirroring mechanisms that ensure equal current distribution.
2Power
If output current is increased, then high current applications are achieved, but output voltage stability deteriorates and heat generation increases
Solution Approach 1:
The total output current is segmented and distributed across multiple regulators (main regulator and auxiliary regulators). Each regulator handles a portion of the current, which prevents any single regulator from overheating and maintains voltage stability. The current mirroring circuitry ensures that each regulator contributes equally to the total output current.
Solution Approach 2:
The system employs feedback mechanisms where the main regulator monitors the output voltage and current, and adjusts the operating points of the auxiliary regulators accordingly. This feedback control ensures that the output voltage remains stable even when the total output current is high, as the regulators dynamically adjust to maintain proper operating conditions.
Data Source
AI summary
A voltage regulator circuit is provided, which includes a main regulator and at least one auxiliary regulator. The main regulator provides an output voltage and regulates the output voltage according to the output voltage and a reference voltage. Each auxiliary regulator is coupled to the main regulator. Each auxiliary regulator also provides the output voltage and regulates the output voltage according to the output voltage and the reference voltage. Each of the main regulator and the at least one auxiliary regulator provides a branch current of the same magnitude. An output current of the voltage regulator circuit includes the branch currents provided by the main regulator and the at least one auxiliary regulator.