Voltage Controlling Circuit Power Sharing Thermal Management
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Solution Overview
Problem
Typical voltage regulator power parameters fail to meet customer requirements for power supply input and thermal ambient conditions, leading to suboptimal power dissipation and distribution, which prevents systems from satisfying voltage and thermal requirements.
Innovation Solution
The implementation of a voltage controlling circuit with power sharing components, including a voltage regulator, a resistor, and additional components like zener diodes and transistors, which allows for efficient power dissipation and distribution across the circuit, enabling operation at high ambient temperatures up to 120°C and a wide supply voltage range of 6 to 18 VDC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a voltage regulator is used to control output voltage, then voltage regulation is achieved, but power dissipation exceeds thermal ambient requirements
Solution Approach 1:
The power dissipation function is segmented from the voltage regulator by introducing a separate power-sharing component (resistor or transistor). This divides the total power handling into two parts: the voltage regulator handles voltage control while the power-sharing component handles excess power dissipation, allowing the regulator to operate within its thermal limits while maintaining voltage regulation.
Solution Approach 2:
A power-sharing component acts as an intermediary between the voltage regulator and the load. This intermediary component absorbs excess power that would otherwise overheat the voltage regulator, enabling the system to meet thermal ambient requirements while preserving voltage regulation functionality.
2Power
If power dissipation is increased to meet power supply input requirements, then power supply capability is improved, but thermal ambient requirements are not satisfied
Solution Approach 1:
The power dissipation task is segmented into two separate components: the voltage regulator and the power-sharing component. This allows the system to achieve high power supply input capability by combining the power handling capacity of both components, while each component operates within its own thermal limits, satisfying thermal ambient requirements.
Solution Approach 2:
Different parts of the circuit are assigned different functional qualities: the voltage regulator is optimized for voltage control with limited power dissipation capability, while the power-sharing component is optimized for high power dissipation. This local specialization allows the system to meet both power supply input requirements and thermal ambient requirements simultaneously.
3Device complexity
If a single voltage regulator is used, then circuit simplicity is maintained, but power distribution is suboptimal
Solution Approach 1:
The power distribution function is segmented by adding a power-sharing component working in parallel with the voltage regulator. This segmentation enables optimal power distribution where the power-sharing component handles excess power dissipation while the voltage regulator maintains voltage control, improving overall power efficiency without significantly increasing circuit complexity.
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
The solution ensures optimal power sharing and distribution, allowing the circuit to operate effectively within the specified temperature and voltage ranges, enhancing the reliability and efficiency of the power supply system.
Implementation Method 1
a voltage regulator for controlling an output voltage for a load
Implementation Method 2
a device in communication with the voltage regulator for dissipating power
Data Source
AI summary
A voltage controlling circuit with power sharing components is provided. The circuit includes a voltage regulator for controlling an output voltage for a load and a device in communication with the voltage regulator for power sharing.