Automotive Electronics I Product News
NXP and TTTech to collaborate on automotive ethernet switch chip
NXP Semiconductors and TTTech, a supplier of networking solutions based on time-triggered technology and modular safety platforms, have signed a Memorandum of Understanding to jointly develop automotive Ethernet switch solutions supporting OPEN Alliance BroadR-Reach Ethernet PHY technology. The switch chip will be specifically designed for the automotive market, but will also be suitable for various demanding industrial real-time applications. With a strategic focus on the ‘connected’ car NXP has been working with partners to establish BroadR-Reach as an open, de facto standard for in-vehicle Ethernet. As the first automotive semiconductor vendor to license Broadcom’s BroadR-Reach technology to develop an Ethernet PHY, NXP has decided to take the next step towards an integrated Ethernet switch chip in close cooperation with TTTech. Under the agreement, TTTech will provide the switch IP, while NXP implements the IP into Ethernet switch solutions with integrated PHY. The products will be ready for stringent automotive EMC, quality and reliability standards and automotive volume production. TTTech has developed an automotive Ethernet switch IP solution based on its long-term real- time Ethernet experience in a number of different vertical markets. The company’s solutions support the trend towards the demand for increasing bandwidth requirements, higher focus on reliability in networked control systems as well as high availability in fail-operational applications, like driver assistance systems.
Smart, LIN Bus motor control IC simplifies 12V automotive actuator designs
Melexis Technologies NV has released its latest advanced motor controller IC for use with the direct current (DC) and single or dual phase brush-less direct current (BLDC) motors now being designed into vehicles. Intended for environments with elevated temperature levels, the MLX81150 incorporates many of the external components critical for DC/BLDC motor control into a compact package, curbing board space utilization, bill of materials costs and system power budget.
Several standards including standard Ethernet (IEEE 802.3), Time-Triggered Ethernet (SAE AS6802) as well as AVB 1.0 and the evolving TSN (Time Sensitive Network) are supported in TTTech’s chip IP.
The switch chip will enable applications with unshielded twisted pair cabling with BroadR- Reach PHY technology. It will be the first Ethernet switch chip with three incorporated traffic classes including standard Ethernet traffic for diagnostics and ECU flashing, asynchronous rate-constrained traffic for audio/video streaming and sensor fusion, as well as synchronous traffic for hard real-time control and fail-operational systems. Hence, this new automotive switch chip will enable unified Ethernet networks and the convergence of critical and non-critical application data streams on one single network.
NXP Semiconductors |
www.nxp.com
The MLX81150 has a high performance 16- bit embedded Flash microcontroller, with 32kByte Flash memory, which deals with specific motor control application requirements, while the built- in 4-bit central processor is able to completely take care of the LIN protocol (with Melexis providing the LIN protocol software necessary to accompany this). In addition, a voltage regulator, a LIN transceiver, plus two relay drivers and four power FET gate drivers are all included on the chip. A series of pre-programmed functional blocks assist in ensuring that efficient motor operation is achieved. There is also an interface for Hall sensor connection in order to enable position sensing to be carried out. A highly integrated device it addresses the
Freescale and ROHM work to simplify the development of advanced automotive systems
Non-contacting torque sensors optimised for electronic power steering applications
Bourns, a manufacturer and supplier of electronic components, has made a number of additions to its new non- contacting torque sensors optimised for electric power assisted steering (EPAS) automotive applications. The new models include Bourns’
torque-only sensor that measures the relative shift angle between two rotating shafts to determine how much power assistance is required; a torque angle sensor that collectively measures torque, steering wheel angle and speed; and a torque index sensor that includes an additional switch that functions by counting the number of turns of the steering shaft. This torque index sensor enables a more cost- effective solution when the total EPAS system cost is considered. These new non-contacting models feature clock spring-free and Hall Effect (HE)-based technology, which allows measurement without the constraints of a connecting cable for the transmission of power and output signals. The Bourns’ torque-only sensor (TOS)
measures the relative shift angle between two rotating shafts linked by a torsion bar. This angular data is converted into a voltage output and is fed to the EPAS electronic control unit (ECU) to determine how much power assistance is required. This sensor is intended for applications where a steering angle sensor is already discretely fitted to the column electronic architecture or mounted below the airbag housing and is particularly useful for column EPAS applications that benefit from the elimination of the connecting cable. The torque angle sensor (TAS) has the ability to collectively measure torque, steering wheel
16 October 2013
Freescale Semiconductor Japan and ROHM have agreed to collaborate on select, automotive- related activities which aim to provide comprehensive solutions for the Japanese and worldwide automotive markets. Freescale has a long track record of delivering semiconductor solutions to automotive OEMs and tier one suppliers, while ROHM is a provider of high- quality peripherals, including discrete components and ASSPs which support microcontrollers for automotive markets around the world. Freescale and ROHM plan to collaborate in market segments and technologies where the companies’ products do not compete. The collaboration is expected to include cross-
operational needs of positioning actuators with DC motors that are employed in throttle valves or window lifters, as well as those of the permanent running motors found in auxiliary water/oil pumps. The MLX81150 is offered in 5mm x 5mm QFN32 and 7mm x 7mm TQFP48 (exposed pad) package formats. AEC-Q100 Grade 0 qualified, this device has a working temperature range of -40°C and 150°C. It also has 45V load dump protection.
Melexis |
www.melexis.com
promotional activities, as well as the joint creation of a range of solutions engineered to speed and simplify the development of high-quality, cost- effective automotive systems. Examples of this collaboration will include: • An evaluation board based on Freescale’sS12 MagniV automotive microcontrollers and leveraging discrete products from ROHM. Freescale’s S12 MagniV is a mixed-signal microcontroller built on proven S12 technology, non-volatile memory and high-voltage analogue circuits.
• A comprehensive CPU card reference design that integrates ROHM’s ASSP and discrete products onto Freescale’s Smart Application Blueprint for Rapid Engineering (SABRE) for Automotive Infotainment. The solution leverages the performance of Freescale’s
i.MX 6 series applications processor technology, together with ROHM's discrete technologies. The result is an automotive infotainment reference design that enables optimal thermal design flexibility by keeping component sizes and part counts to a minimum. The CPU card reference design is expected to be available by November 2013 from ROHM.
Freescale |
www.freescale.com
NXP looks to drives in-car entertainment with new single chip car radio tuners
angle and speed with a number of steering wheel turns. The upper portion of the sensor contains components for differential torque measurement, and the lower housing uses a set of satellite gears to measure the rate and number of steering wheel turns. The steering angle sensor output is absolute and offers true power-off capability. Bourns’ torque index sensor (TIS) offers a cost-
effective solution that features an additional HE switch that functions by counting the number of turns of the steering shaft for comparative analysis with an EPAS motor. A motor position sensor (MPS) obtains the relative value of angles from the steering assist motor and by comparing this information; the TIS sensor can accurately determine the absolute value of the steering angle without the use of a discrete steering angle sensor.
Bourns |
www.bourns.com Components in Electronics
NXP Semiconductors has launched the TEF665x and TEF668x, the next generation of its family of RFCMOS-based, high-performance AM/FM single-chip car radio tuners.
The TEF665x and TEF668x tuners combine the latest RFCMOS technology with a broad feature set, best-in-class software algorithms and simplified integration, offering an improved solution for car radios. Providing OEMs with increased flexibility, the tuners offer optional support of HD Radio and DRM digital radio standards via a co-processor such as NXP’s SAF356x and SAF350x. With a significant reduction in footprint (-80%) and power dissipation (-50%) compared to its predecessor, the tuners provide premium performance at a low system cost.
NXP maintains a strong focus on improving
reception quality in challenging field conditions, including multipath reception caused by obstacles such as tall buildings or mountains. Special algorithms on the TEF668x such as improved multipath suppression (iMS) and
channel equalizer (CEQ) ensure excellent sound quality during such conditions. Commenting Torsten Lehmann, senior vice
president and general manager car entertainment solutions at NXP Semiconductors, said, “The TEF665x and TEF668x family of tuners responds to our customers’ demand for highly integrated, cost-effective, premium quality radio solutions.”
NXP Semiconductors |
www.nxp.com www.cieonline.co.uk
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