Power module targets mid-power EV traction inverters

Tailored for electric vehicles (EV) traction inverters, the HybridPack DC6i is Infineon Technologies’ latest IGBT power module.

It is a six-pack module, optimised for hybrid and small battery EVs in terms of system cost and performance, says Infineon. It combines the company’s EDT2 IGBTs with package technologies noted for compactness, thermal management at reduced material cost and ease of installation.

Infineon’s EDT2 technology is an automotive micro-pattern trench field-stop cell design optimised for electric drivetrain applications. It offers a blocking voltage of 750V, a short-term extended operation temperature of 175 degrees C and high short-circuit ruggedness. The light load power losses lead to an efficiency improvement of 20 per cent compared to Infineon’s previous IGBT3 generation.

The HybridPACK DC6i is positioned between Infineon’s HybridPack1 family and the more powerful HybridPack Drive family.

It has the same compact footprint (72 x 140mm) as the HybridPack, which is 25 per cent smaller than the HybridPack Drive, yet the available output power is more than 50 per cent higher. It has six screw connectors to the DC-link capacitor compared to two in the HybridPack1 family. According to Infineon, this enables a low-inductive design with a stray inductance of 15 nH.

Infineon’s patented direct-cooling wave baseplate provides cost-effective heat dissipation with a thermal resistance from the IGBT chip junction to the fluid of 0.17K/W.

The DC6i was designed for automated, high-volume production, featuring press-fit pins and additional guiding elements to enable gate driver board mounting in a few seconds; traditional selective soldering takes over one minute, notes the company.

The HybridPACK DC6i is fully qualified according to the AQG324 norm for automotive power modules.

The HybridPack DC6i is in production and will be available at distributors in September 2020.


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