Infineon switches help reduce emissions

Infineon TLE9104SH four-channel low-side switch

Infineon Technologies has launched the latest member of its Flex multichannel low-side switches family that will help reduce fuel consumption and thus CO2 emissions in automotive powertrain applications.

The TLE9104SH is a smart four-channel low-side switch for currents up to 5A DC in 12V systems. This allows controlling actuators such as high-precision port fuel injectors, high-energy valves or high-current relays in engine management, transmission control and battery management systems.

With an RDS(on) of 300mΩ at +150˚C, it comes in a DSO-20 package (PG-DSO-20-88) with a footprint area of about 80mm2.

It is equipped with a 16bit serial peripheral interface (SPI) for control and diagnosis. All channels are protected against over-current and temperature and enhanced with an active clamping circuitry for driving inductive loads.

Load status detection is possible over the SPI for short to ground, open load and short to battery. Four input pins are available for direct control of the switches.

Safety features include an extra output enable pin, SPI communications watchdog and output stage status information via SPI. This makes the product suitable for safety critical automotive and industrial applications.

To support design activities, there is a development board with TLE9104SH in the Arduino form factor, which can be used in two kinds of evaluation setups. The TLE9104SH shield can easily be used either in combination with the XMC1100 boot kit (version S) or with the Aurix TC277 evaluation board (TriBoard) with the help of an additional multichannel connection PCB (version L).

It is now available. Samples can be ordered via distributors or online. Evaluation software, user manual and application notes are available.


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