Infineon - The infinite driving force for car designers

10-12-2018 |   |  By Paul Whytock

All you drivers out there like to think you have a touch of Lewis Hamilton or Sabine Schmitz driving skills but the sad fact is you really don't.

Those drivers have reaction times of around 200 milliseconds and you'd be extremely fortunate to achieve something under 500 milliseconds. The fact is professional racing drivers are known to have extraordinarily well developed cerebellum functions, the part of the brain that receives information from the body's sensory systems and then activates appropriate reactive movements.

So you might as well get used to the fact that you'll never get that dream drive behind the wheel of a Ferrari F1 car. The car would be far too quick for your binaries to cope with.

But don't feel too bad about it because even champion FI drivers have something in their driving environment that has way faster reaction times than they do - it's called automotive electronics.

The fact is without electronics technology F1 drivers would be nowhere near as good as they are. And the same goes for us everyday motorists.

Every F1 car has an electronic control unit which handles a multitude of car functions including engine operation, the clutch, electronic differential and the gearbox. It can change gears in less than 100 milliseconds and will also stop the car stalling if the car spins of the racetrack. Then there's the telemetry which feeds back car information to the race team's pit crew and from there they can monitor in real-time brake and engine temperature, suspension movements, ride height and pedal movements.

Sophisticated Stuff

That's all very sophisticated stuff and is designed specifically for the Grand Prix car, but us everyday motorists also have an absolute plethora of in-car electronics technology that not only makes us better and safer drivers but also entertains us while we sit in those interminably long and irritating jams. It also keeps us connected with the world outside our vehicle.

Indeed electronic components and systems now make up approximately 36% of the cost of a car which is a long way from the very occasional 1950s vehicle which could lay claim to some inherent electronics technology by way of a vacuum tube radio! The first real breakthrough in automotive electronics came in 1956 with the development of electronically controlled ignition systems.

Since then, of course, the application for electronics in modern cars has grown monumentally thanks to the innovative research and development work of semiconductor companies around the world. Here in Europe, one major contributor to that market expansion is the Munich-based semiconductor company, Infineon Technologies AG.

This company was born out of one of Germany's oldest and most respected companies, Siemens, which spun-off its electronics operation in an IPO stock market launch in 2000.

Since then the company has produced semiconductor components for the computing, communication and industrial systems markets but it's fair to say that while the communication and computing sectors can prove fiscally volatile the one stable electronics application market that Infineon has served is the automotive sector.

Last year industry analysts IHS Market confirmed the company was the global leader for power semiconductors, which are an important component area in auto electronics.

In the discretes and modules sector Infineon not only retained number one spot for the fifteenth time but also increased its market share and is now more than double the size of the company in second place. In the IGBT (insulated gate bipolar transistor) market Infineon is now more than three times the size of the nearest competitor.

All that is pretty impressive but you don't maintain that sort of market lead unless you continue to develop at both the electronics component and systems level. And new systems cannot be created unless there is the continuous arrival of innovative components to enable them.

Here's some of the stuff that Infineon has been up to recently.

At the OktoberTech Technology Forum last year the company unveiled its latest semiconductor solutions relative to autonomous driving and these included a complete radar chipset solution. It comprises a 77/79 GHz Monolithic Microwave Integrated Circuit (MMIC), a high-performance multicore microcontroller with a dedicated sensor processing unit and safety power supply.

At present Infineon is the leading supplier of 77/79 GHz radar chips with over 50 million devices sold and the growth of radar applications in vehicles is predicted to grow thanks to the voluntary commitment of the United States automotive industry and a mandatory requirement by Euro NCAP for the use of radar-based driver assistance systems to achieve a five stars safety rating in new cars.


Angle Sensor Breakthrough

In addition to its radar chips, Infineon is also the first company to achieve the automotive functional safety grade ASIL D for angle sensors with a single sensor chip. The XENSIV™ TLE5501 automotive angle sensor family is based on TMR (tunnel magneto-resistance) technology and their fields of use range from steering angle applications to motors for wipers, pumps and actuators and electric motors.

The TMR technology offers a high sensing sensitivity and that comes with a high output voltage which provides output signals of up to 0.37 V/V for all XENSIV™ TLE5501 products. Unlike other technologies a TMR-based sensor can be connected directly to the microcontroller without any further amplification. TMR also exhibits low temperature drift which cuts down on external calibration and compensation efforts. In addition, TMR technology is well known for its frugal current consumption which is as low as 2mA.

Security Safe In-Car Communications

Cars have become very sophisticated mobile communications modules and enablement of this technology requires vehicles to have within them electronic control units that are networked.

Consequently, embedded IT security is a part of the system design that ensures the safe updating of software over the air (SOTA).

Infineon is not alone in working on cyber-security for cars. It has a collaborative relationship with Elektrobit Automotive GmbH and the companies can now offer a coordinated hardware-software security solution based on the second generation of the multicore microcontroller family AURIX™ (TC3xx) from Infineon and Elektrobit’s zentur HSM solution.

The microcontrollers perform monitoring and security tasks and support security protocols in the vehicle. Every TC3xx microcontroller has an integrated hardware security module (HSM), where the keys are generated and stored. The HSM uses hardware-based symmetric and asymmetric encryption algorithms as well as hash functions (AES-128, ECC 256, SHA2). The HSM enhances protection against manipulation, increases speed and hash calculation (SHA256) is around 150 times faster than with a pure software solution.

That, of course, has a direct impact on RSA signature verification and the AURIX™ and EB’s zentur HSM combination enables more than 100 signature verifications/sec.

Charging Mobiles On The Move

Part of Infineon's technology appeal is not totally aimed at electronics OEM design engineers. The consuming public needs to know just what electronic goodies are launching that could play a part in their personal technology world. Consequently at this year's Consumer Electronics Show the company demonstrated its wireless charging technology for smart phones using its AURIX™ and XMC™ microcontroller families.

These controllers work seamlessly with power devices from Infineon including voltage regulator and MOSFET technology which enables efficient power conversion. The devices support the current 15W charging standards, including fast charge smart phones and can support future changes via software updates.

Incorporated in the controllers is an enhanced power stage architecture which improves Electro Magnetic Interference (EMI) performance by 10-15 dB over existing solutions on the market. And from a user safety perspective a recently developed foreign object detection system provides enhanced detection accuracy.

Infineon's extensive range of electronics technology goes way beyond the scope of this article and readers wanting more information about the company's products should click here


By Paul Whytock

Paul Whytock is European Editor for Electropages. He has reported extensively on the electronics industry in Europe, the United States and the Far East for over twenty years. Prior to entering journalism he worked as a design engineer with Ford Motor Company at locations in England, Germany, Holland and Belgium.

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