Infineon’s latest Power PROFET ultra-low ohmic smart high-side switch family could help make e/e architectures more cost effective. The protected switches offer lower on-resistance and the higher energy capability, according to the firm.
The new system also enables engineers to replace electromechanical relays and fuses in power distribution and junction boxes up to 40A DC.
Vehicle power architectures are strongly restricted by the limitations of relays and fuses because they can be bulky and often in need of replacement and some of their functionalities are can be limited.
Infineon said: “Their switching cycle capability, for example, is only about 200,000. Power PROFET switches address these issues and bring multiple benefits. They offer more than 1,000,000 switching cycles. Also, they replace within one single device many components from the existing system, such as relays, fuses, relay drivers, cables and connectors. This allows new mounting locations and, therefore, enables the next generation of decentralised power architectures.”
Infineon’s 1.0mu2126 high-current technology has been designed for power feeds of electronic control units, auxiliary power outlets, PTC heaters or rear window heaters and for systems with high switching cycles and high energy requirements such as starter relays in stop-start systems and electric brake vacuum pumps.
“Power PROFET switches increase energy efficiency as power losses are reduced by a factor of up to 7. They feature less than 2W dissipation while conducting 30A DC,” said Infineon.
Further power management is supported through integrated current sensing and pulse-width modulation capability. In addition the switches offer an energy handling capability of up to 3,000mJ for single pulses and 550mJ for repetitive pulses.