Voltage Regulator Control Circuit for Voltage Drop Compensation
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Solution Overview
Problem
Existing information handling systems face challenges in reliably delivering voltage to loads due to voltage drops across electrical connections, which can lead to improper device operation or damage, especially when remote sensing lines are not properly connected, increasing hardware costs and design complexity.
Innovation Solution
A non-remote-sensing power connection method using a voltage regulator control circuit with a programming resistor input pin and ammeter input to compensate for electrical connection resistance, allowing local voltage sensing and eliminating the need for physical remote sense lines, thereby ensuring stable voltage delivery to loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If remote sensing lines are used to compensate for voltage drops, then voltage delivery reliability is improved, but hardware cost and design complexity increase
Solution Approach 1:
The patent extracts the voltage sensing function from the physical remote sensing lines and implements it through a programming resistor connected to a dedicated input pin. This removes the need for complex remote sensing circuitry while maintaining voltage drop compensation capability, thereby reducing hardware complexity while preserving reliability
Solution Approach 2:
The patent changes the parameter representation by using a programming resistor value to represent the voltage drop characteristic instead of using physical voltage sensing. This parameter transformation allows the system to compensate for voltage drops through a simple resistor connection rather than complex sensing lines, reducing design complexity
2Measurement precision
If remote sensing lines are properly connected, then voltage regulation accuracy is improved, but hardware cost increases
Solution Approach 1:
The patent creates a simplified model of the voltage drop characteristic using a programming resistor that represents the connection resistance. This copy allows the system to calculate and compensate for voltage drops without needing actual remote sensing connections, maintaining accuracy while reducing hardware cost
Solution Approach 2:
The programming resistor acts as an intermediary that mediates between the voltage regulator and the load, providing a representation of the connection resistance without requiring physical remote sensing lines. This intermediary enables accurate voltage regulation through a simpler, lower-cost implementation
3Ease of manufacture
If non-remote-sensing power connection is used, then circuit design is simplified, but voltage drop compensation reliability may be compromised
Solution Approach 1:
The patent applies preliminary action by pre-configuring the programming resistor to represent the expected connection resistance before the system operates. This allows the voltage regulator to pre-calculate compensation values, ensuring reliable voltage drop compensation while maintaining simple circuit design
Solution Approach 2:
The system uses feedback through the programming resistor input to continuously monitor and adjust for voltage drops. The voltage regulator controller uses the programming resistor value to calculate appropriate compensation, providing reliable voltage regulation through a simple feedback mechanism without complex remote sensing
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach prevents damage from false voltage operations, simplifies circuit design and layout, and ensures reliable voltage regulation at the load side without the need for remote sensing lines, reducing hardware costs and complexity.
Implementation Method 1
compensate for electrical connection resistance
Data Source
AI summary
An information handling system includes a voltage regulator control circuit having a programming resistor input pin for receiving an input from a programming resistor and an ammeter input for receiving a current value. A power source provides power to a load circuit coupled to the power source via a non-remote-sensing power connection. In accordance with at least one embodiment, the voltage regulator control circuit assures a reliable input to an overvoltage protection circuit of the voltage regulator control circuit regardless of states of connections of the load circuit to the power source.