Mixed-Topology Switching Regulator for Die Thermal Offloading
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Solution Overview
Problem
Thermal management in semiconductor devices, particularly switching regulators, is inadequate, leading to increased heat generation that can reduce the performance and lifetime of components and potentially damage other components on or off the package.
Innovation Solution
Implementing a mixed topology switching regulator with internal power stages on a semiconductor die and external power stages that can be activated based on temperature and current thresholds, allowing for offloading of thermal energy dissipation to external stages with a larger surface area for better cooling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If internal power stages are used on the semiconductor die, then device integration and compactness are improved, but thermal management deteriorates due to heat generation limiting design and component incorporation
Solution Approach 1:
The power stage functionality is segmented into two locations: internal power stages remain on the semiconductor die for integration, while additional power stages are placed externally on the circuit board for thermal management. This segmentation allows the system to maintain compactness while offloading heat generation away from the die.
Solution Approach 2:
The solution transitions from a two-dimensional integration problem (components on the die) to a three-dimensional system (die plus external components on the circuit board). By utilizing the vertical dimension and external space, the system achieves better thermal management without sacrificing integration benefits.
2Power
If more power stages are added to handle higher currents, then power management capability is improved, but heat generation increases reducing component lifetime and performance
Solution Approach 1:
Power stage components are extracted from the semiconductor die and placed externally on the circuit board. This extraction removes the heat-generating elements from the confined die environment, allowing higher power handling capability while improving reliability by preventing thermal damage to other components.
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 effectively reduces thermal energy within the package, enhancing the performance and lifetime of components by dissipating heat externally and allowing for better airflow and cooling, thus mitigating the limitations of internal power stage design.
Implementation Method 1
effectively reduces thermal energy within the package, enhancing the performance and lifetime of components by dissipating heat externally
Data Source
AI summary
An electronic device includes a die, one or more power stages, and one or more sensors electrically coupled to the one or more stages and to determine data associated with a temperature of the die. The electronic device includes one or more off-die power stages external to the die and processing circuitry configured to cause the one or more off-die power stages to activate based on the data indicating that the temperature is greater than a temperature threshold.