Semiconductor module ceramic circuit board
The high-power semiconductor module is a combination of certain functions and modes. The power semiconductor module is a high-power electronic power device that is refilled and integrated according to a certain function combination. Power semiconductor modules can implement different functions depending on the components of the package. Power semiconductor devices are mainly power metal oxide semiconductor field effect transistors, insulated gate bipolar transistors, and power integrated circuits.
These devices or integrated circuits can operate at very high frequencies, while the circuit can be more energy efficient and material efficient at high frequencies, significantly reducing the size and weight of the device. In a highly integrated single-chip power system, it can integrate the sensor device with the circuit, signal processing circuit, interface circuit, power device and circuit on a silicon chip, so that it can precisely adjust the output according to the load requirements and Intelligent function that protects itself from overheating, overvoltage, overcurrent, etc.
Whether it is an insulated gate bipolar transistor (IGBT) or a DC/DC high-power module, ceramic circuit boards are one of the main core components. High-power semiconductor modules have very large heat dissipation requirements, whether it is air-cooled or water-cooled. The heat must be exported first. The first contact point of the heat is the substrate. The aluminum nitride ceramic substrate is undoubtedly the best choice.
The aluminum nitride ceramic substrate is laser activated metallization technology, and the conductive layer and the ceramic are laser-activated to make it into an ionic state, and then combined, the bonding strength can reach an unprecedented 45Mpa, the bonding strength is high, and the lifting is also improved.
There are all aspects of performance:
Thermal conductivity: Ordinary aluminum nitride ceramic substrate thermal conductivity is about 150W / (m · K), Slyton aluminum nitride ceramic circuit board can reach 230 W / (m · K);
Conductivity: Because the sealing property is good, the copper layer does not contain an oxide layer, so the conductivity is superior to other substrates;
Stability: high thermal conductivity, good electrical conductivity, corrosion resistance, stability can reach aerospace standards;
Long life: Relatively speaking, life expectancy will increase by more than 2 times.
The above advantages are all capable of improving performance by one level for high-power semiconductor modules.
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