Dynamic Current-Source Voltage Regulation for Low-Noise Power Rails
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Solution Overview
Problem
Existing voltage regulators face issues of high power consumption and low stability, particularly in low-voltage power supply systems, which are sensitive to ripple and noise, affecting the performance of integrated circuits.
Innovation Solution
A voltage regulator system with a detection circuit that controls the connection and disconnection of current source units based on load states, optimizing performance by reducing power consumption and improving stability through dynamic adjustment of current output.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing voltage regulators are used, then power supply voltage regulation is provided, but power consumption is high and stability is low
Solution Approach 1:
The patent implements dynamic adjustment of current source units based on load detection. The detection circuit monitors load conditions and dynamically connects or disconnects current source units from the output terminal, transitioning the system from a static configuration to a dynamic one that adapts to changing load requirements, thereby resolving the contradiction between stability and power consumption
Solution Approach 2:
The patent changes the operational parameters of the voltage regulator by adjusting the number of active current source units based on load conditions. Under light-load conditions, fewer current source units are activated to reduce power consumption, while under heavy-load conditions, more units are activated to maintain stability, thus dynamically optimizing the parameter configuration
2Stability of the object's composition
If current source units are continuously connected to maintain stability, then voltage regulation stability is improved, but power consumption increases
Solution Approach 1:
The patent employs periodic load detection and corresponding periodic connection/disconnection of current source units. The detection circuit continuously monitors load conditions and periodically adjusts the configuration of current source units based on detected load states, implementing a rhythmical on-off pattern that maintains stability when needed while conserving energy during light-load periods
Solution Approach 2:
The patent extracts unnecessary current source units from the active circuit configuration under light-load conditions. By detecting light-load states and disconnecting excess current source units from the output terminal, the system removes unnecessary energy-consuming components from the active configuration, thereby reducing power loss while maintaining adequate stability
3Adaptability or versatility
If detection circuit dynamically controls current source units, then power consumption and stability are optimized, but device complexity increases
Solution Approach 1:
The patent segments the current source units into multiple independent modules that can be individually controlled. Each current source unit can be independently connected or disconnected based on load conditions, allowing fine-grained control over power consumption and stability. This modular segmentation enables adaptive operation without requiring complete redesign of the entire circuit
Data Source
AI summary
The voltage regulator comprises: a voltage regulation circuit, a detection circuit and at least one current source unit. An output terminal of the voltage regulation circuit is electrically connected to a first terminal of each of the current source units, and is configured to be electrically connected to a load; and a second terminal of each of the current source units is electrically connected to a first voltage terminal. The detection circuit is electrically connected to the voltage regulation circuit, and is configured to: when the voltage regulation circuit is in a light-load state, control a designed number of the current source units to connect to the output terminal of the voltage regulation circuit to output designed current, and when the voltage regulation circuit is in a heavy-load state, control each of the current source units to disconnect from the output terminal of the voltage regulation circuit.