Regulator Heat Dissipation Circuit External Resistor Switching
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Solution Overview
Problem
Regulators face increased power consumption and heat generation when input voltage increases, leading to serious heat issues that existing technologies have not adequately addressed.
Innovation Solution
A heat dissipation circuit that senses changes in input voltage and switches to a dropped input voltage path through a resistor outside the chip when the voltage exceeds a preset level, reducing internal heat generation by dissipating heat through this external resistor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the input voltage is increased to provide sufficient power to the load, then the power delivery capability is improved, but the internal heat generation of the regulator increases
Solution Approach 1:
The patent segments the voltage regulation function into two parts: the regulator chip handles voltage regulation while an external resistor handles heat dissipation. This segmentation allows the regulator to operate at lower power levels internally while still delivering sufficient power to the load, thereby reducing internal heat generation without compromising power delivery capability
Solution Approach 2:
The patent extracts the heat dissipation function from the regulator chip by introducing an external resistor. The excess voltage is dropped across this external resistor which dissipates heat away from the regulator, effectively removing the heat generation problem from the regulator while maintaining the necessary power delivery
2Temperature
If a heat dissipation circuit is added to reduce internal heat generation, then the temperature control is improved, but the device complexity increases
Solution Approach 1:
The heat dissipation function is extracted from the regulator chip and implemented using a simple external resistor. This approach maintains temperature control improvement while minimizing device complexity by using a passive component rather than an active control circuit
Solution Approach 2:
The patent changes the operational parameters of the regulator by introducing a switching mechanism that activates the external resistor path when input voltage exceeds a threshold. This parameter-based control allows the system to adapt to different input conditions without requiring complex continuous control circuitry
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 solution effectively reduces internal heat generation and power consumption in regulators by redirecting excess voltage through an external resistor, maintaining stable output voltage to loads while minimizing heat production within the regulator.
Implementation Method 1
heat may be dissipated through the resistor disposed outside the chip, whereby it is possible to reduce the internal heat generation of the regulator
Data Source
AI summary
A regulator control circuit includes a regulator configured to provide an output voltage by regulation using one of an input voltage and a dropped input voltage, to a load; and a heat dissipation circuit configured to sense a change in the input voltage, and provide the dropped input voltage to the regulator when the input voltage is sensed to be equal to or higher than a preset level.