Provides up to 300A current with TOLL product-based standard copper substrate PCBs

Infineon Technologies has set out to expand its power device portfolio to keep pace with the growth of automotive 48V systems.

Infineon is launching new packages for 80V and 100V MOSFETs based on OptiMOS5 technology to meet the requirements of various 48V applications. Infineon has currently started chip production at its 300mm thin-film wafer line in Dresden, Germany.

Infineon offers 80V and 100V MOSFET products featuring OptiMOS5 technology with various on-resistances, with the lowest on-resistance being 1.2 mΩ. For key mild hybrid applications requiring high power density, such as starter generators, battery switches, and DC/DC converters, Infineon is expanding its TOLx package family. Based on existing TOLL (TO Leadless, 10mm x 12mm) products, it provides up to 300A current using a standard copper substrate PCB.

TOLG (TO Leads Gullwing) package products have the same footprint as Insulated Metal Substrate (IMS) using an aluminum core. Because copper and aluminum have different coefficients of thermal expansion, using IMS boards in environments with high thermal and mechanical stress increases stress on the soldered portion between the package and the PCB. To alleviate this, the TOLG package used a gull-wing lead.

Top surface cooling package
The TOLT (TO Leads Top Side Cooling) package introduced by Infineon utilizes a cooling method that dissipates heat through the top surface of the package rather than the PCB. The TOLT product, which can reduce the cooling required for the board while increasing power by more than 20%, is scheduled to begin mass production in 2021.

In addition, Infineon offers another package that can be used in press systems that are gradually transitioning to a 48V supply and have low power consumption, such as fans or pumps. A completely new small S3O8 package (3.3mm x 3.3mm) complements the SSO8 package (5mm x 6mm) for up to 100A current for low current up to 40A.

Mild hybrid drives using a 48V system are not only a fast and economical way for automakers to reduce CO2 emissions from their production vehicles, but also allow for the recovery of more energy compared to 12V systems and the use of the recovered energy to assist internal combustion engines.

In addition, it provides performance and efficiency advantages in safety and convenience functions with high current loads, such as stability control and air conditioning compressors.

Depending on the configuration of the drive system and the number of auxiliary devices, mild hybrids can reduce CO2 emissions by up to 15% compared to pure internal combustion engines.


"Within ten years, the majority of new cars produced worldwide will be equipped with partial or full electric powertrains," said Stephan Gizala, Vice President of Infineon Automotive's High Power Business Unit. "According to market research, the production of cars equipped with 48V power supplies and mild hybrid drives will increase more than tenfold between 2020 and 2023."