Thermal Balance Conversion Circuit for Power Supply
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Solution Overview
Problem
Multiphase power supply voltage conversion return circuits often overheat due to environmental changes and circuit layout issues on printed circuit boards, leading to potential damage and inefficiency.
Innovation Solution
A thermal balance conversion circuit comprising multiple voltage conversion units, temperature detection units, PWM controllers, and a signal integration controller that adjusts PWM signals based on temperature readings to balance thermal loads across units, ensuring efficient voltage conversion and minimizing overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If multiple voltage conversion return circuits are used in a multiphase power supply, then voltage conversion capability is improved, but thermal balance is deteriorated causing overheating and potential damage to circuit elements
Solution Approach 1:
The patent implements dynamic thermal management by continuously monitoring temperatures of different voltage conversion circuits and dynamically adjusting PWM signal distribution. The control system switches between different voltage conversion circuits based on real-time temperature conditions, ensuring that no single circuit is overloaded thermally while maintaining continuous power conversion capability.
Solution Approach 2:
The patent employs temperature feedback mechanisms where temperature sensors monitor the thermal state of voltage conversion circuits and feed this information back to the control system. Based on this feedback, the controller adjusts the operating status of different circuits, transferring load from overheated circuits to cooler ones, thereby maintaining thermal balance across the system.
2Adaptability or versatility
If environmental changes and circuit layout variations occur, then adaptability is reduced, but thermal balance is deteriorated leading to overheating
Solution Approach 1:
The patent changes operational parameters dynamically by adjusting PWM duty cycles and switching between different voltage conversion circuits based on detected temperature conditions. This parameter adjustment allows the system to adapt to environmental changes and layout variations, maintaining thermal balance despite external conditions.
Solution Approach 2:
The system transitions from static to dynamic operation by continuously monitoring temperature and adjusting circuit utilization in real-time. This dynamic adaptation enables the power supply to handle environmental changes and layout variations while maintaining thermal balance across all voltage conversion circuits.
Data Source
AI summary
A thermal balance conversion circuit includes a voltage conversion circuit, a temperature detection circuit, a PWM controller, and a signal integration controller. The voltage conversion circuit includes a plurality of voltage conversion units, and each of the voltage conversion units converts the DC voltage of a external power to a driving voltage. The temperature detection circuit includes a plurality of temperature detection units, and the plurality of temperature detection units detects temperatures of the plurality of voltage conversion units. The pulse width modulation controller outputs a plurality of different phase PWM signals according to each of the voltage conversion units. The signal integrated controller receives the PWM signals from the PWM controller to control the voltage conversion of each of the voltage conversion unit.