Power Electronics

H-PSOF Packaging for Automotive Power Electronics

Infineon Technologies AG introduced a new package technology providing high-current capability and high efficiency for demanding automotive electronics applications, including electric and hybrid vehicles. The new TO package is compliant with JEDEC standard H-PSOF (Heatsink Plastic Small Outline Flat lead). The first available products using the H-PSOF package technology are 40V OptiMOS(tm) T2 power transistors offering up to 300A current capability in addition to ultra-low RDS(ON) values of only 0.76mohm.

Higher performance power electronics components help automotive system designers comply with government regulations mandating higher standards for automotive fuel efficiency while also demanding lower overall emissions. To meet these standards, power MOSFETs with current capability above 200A and RDS(ON) below 1mohm are needed to reduce conduction losses and improve overall efficiency. Until now, MOSFETs to fulfill these needs have not been available in the automotive market.

The H-PSOF package defines a new milestone, providing 40V power MOSFETs with up to 300A current capability and RDS(ON) of only 0.76mohm. In addition, the overall dimensions and the height of the H-PSOF package were reduced compared to a standard D²PAK package (TO-263), which is typically used in these types of applications. The footprint of the H-PSOF package is about 20% smaller and its height is almost half that of the current D²PAK package.

Typical H-PSOF package applications include battery management for hybrid vehicles as well as Electric Power Steering (EPS), active alternators and other heavy load applications enabling higher efficiency and lower emissions. US market research firm Strategy Analytics in a recent report, said automotive EPS and start stop systems will grow from about 47 million units in the year 2011 to about 110 million units in the year 2016, accounting to a compound average annual growth rate of about 19 %.

The H-PSOF package also offers assembly and manufacturing advantages. Its special design ensures a good wetting for reliable soldering and it is possible to control the soldered leads by using Automatic Optical Inspection (AOI) which is usually part of a Surface Mount Technology (SMT) production line.

The first available product using the H-PSOF package is the IPLU300N04S4-R7, a member of the 40V OptiMOS T2 automotive power transistor family from Infineon, which is the benchmark for applications in energy efficiency, CO2 reduction, and electric drives. The IPLU300N04S4-R7 offers a continuous drain current (ID) of 300A with RDS(ON) of 0.76mohm. The power devices in the H-PSOF package are qualified according to AEC-Q101 standards. Infineon plans to introduce further 40V and 30V automotive MOSFETs using the H-PSOF package technology.

Infineon Technologies
Part Number: OptiMOS

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