Surface-Mount Amplifier Package Layout for Better Heat Dissipation
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Solution Overview
Problem
Conventional amplifier designs face challenges in achieving high efficiency and effective thermal dissipation, particularly at higher operational frequencies and power levels, leading to issues with heat buildup in compact semiconductor packages.
Innovation Solution
The implementation of a surface-mount packaged amplifier design where heat-generating components are mounted on a substrate that is then attached to a leadframe package with integrated heat dissipation structures, allowing for improved thermal management by dissipating heat both through the substrate and laterally.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If amplifier components are packaged in compact semiconductor packages, then device footprint is reduced, but thermal dissipation becomes problematic
Solution Approach 1:
The patent transitions from planar heat dissipation to three-dimensional thermal management by attaching the substrate to a leadframe package with integrated heat dissipation structures that extend vertically, enabling heat to be conducted away in multiple spatial dimensions rather than relying solely on surface area
Solution Approach 2:
The leadframe package serves as a thermal intermediary between the heat-generating amplifier components on the substrate and the external environment, providing a dedicated thermal conduction path that mediates heat transfer from the compact package interior to the exterior
2Power
If operational power levels are increased, then amplifier performance is improved, but thermal energy build-up increases
Solution Approach 1:
The patent converts the harmful thermal energy byproduct of high-power operation into a manageable parameter by providing dedicated thermal conduction paths through the leadframe package, transforming waste heat into controllable thermal flow that can be efficiently dissipated
Solution Approach 2:
The patent changes the thermal conduction parameters by introducing high-thermal-conductivity materials and optimized geometric structures in the leadframe package, fundamentally altering how thermal energy propagates from the amplifier components to the external environment
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 enhances the thermal dissipation of heat-generating components, improving the performance and efficiency of RF amplifiers by effectively managing heat buildup in compact designs.
Implementation Method 1
heat dissipation structures, allowing for improved thermal management by dissipating heat both through the substrate and laterally
Data Source
AI summary
A device includes a package body including a central flange and an amplifier module mounted to the central flange of the surface-mount device. The amplifier module includes a module substrate mounted to the central flange. The module substrate includes a first die mount window, a first circuitry on a first surface of the module substrate, a second circuitry on the first surface of the module substrate, and a first amplifier die mounted on the central flange. The first amplifier die is at least partially disposed within the first die mount window and the first amplifier die is electrically connected to the first circuitry and the second circuitry. The first circuitry is electrically connected to a first lead of the package body and the second circuitry is electrically connected to a second lead of the package body.