Baden-Baden, October 16, 2013 – On the occasion of the VDI congress „Electronics in the Vehicle“ („Elektronik im Fahrzeug“), taking place October 16 to 17 in Baden-Baden, Infineon Technologies AG and Schweizer Electronic AG for the first time present a jointly developed demonstrator of a high-performance battery switch. This battery switch demon-strates how, on smallest installation space, entire battery circuits or subnets can be switched electronically, at impressive benchmark data of 400 A static current and 7,200 A peak current.
On the one hand, this is enabled by the latest MOSFET generation of Infineon Technologies AG with the new innovative TO-leadless package in combination with the 40 V OptiMOS™ semiconductor technology, and on the other hand, via PCB Inlay technology of Schweizer Electronic AG, with copper inlays of 2 mm thickness for maximum ampacity and heat dissipation.
Typical applications for the battery switch are the replacement of today’s pyroelectric solutions; the switching of high current loads or partial battery nets in vehicle operation as well as in parking mode; the prevention of electromigration and corrosion of electronic components, as well as the optimization of no-load and fault currents. It is also possible to use the device as a battery break-switch in order to detach from on-board power supply in case of transportation or seasonal shutdown of a car.
With the IPLU300N04S4-R7 of Infineon, 40 V MOSFETs of the latest generation of TO-leadless packages are applied which have been designed particularly for lowest on-state resistance (84 µOhm), highest ampacity (300 A DC) and best cooling (0.35 K/W). Despite increased performance data, the necessary footprint decreases by 30 % compared to D²PAK. Thus, very compact, power dissipation-efficient and robust high power solutions are possible, which – due to economic and technical restraints - could not be realized in such a way in the past.
The PCB Inlay technology of SCHWEIZER complements the remarkable semiconductor performance through outstanding ampacity and optimum heat spread, which is already established in the automotive area. By means of mature setup technologies, the additive thermal resistance within the PCB can be decreased to < 0.1 K/W. The on-state resistance amounts to 29 µOhm, in total resulting in a terminal-terminal on-state resistance of only 113 µOhm. Thus, the mentioned parameters significantly contribute to heat dissipation and to an efficient cooling of the semiconductor.
In an impressive way, the demonstrator proves the possibilities of today’s state-of-the art MOSFET and PCB technologies. When developing their systems, customers of both companies will largely benefit from the advantages of such a battery switch.
Infineon and SCHWEIZER present a Demonstrator of a high-performance Battery Switch during Congress „Electronics in the Vehicle"
