Arrays offer multiple resistance values in one device

27th April 2016

Source:

Vishay

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Posted By : Nat Bowers

Arrays offer multiple resistance values in one device

Vishay Intertechnology has introduced what the company hails as the industry’s first thick film chip resistor arrays to offer multiple resistance values in one device. The AEC-Q200-qualified devices are available with two resistors of different values in the 0606 case size (CRAS0606), or two pairs of resistors with different values in the 0612 case size (CRAS0612 and CRAE0612).

Providing an alternative to thin film arrays in applications requiring lower performance, the arrays allow designers to lower pick-and-place costs and save board space in automotive and industrial applications.

With resistance from 10Ω to 1MΩ, resistance tolerance of ±1 and ±5% and TCR of ±100 and ±200ppm/K, the resistor arrays are to be used as voltage dividers, operational amplifier feedback circuits and DC/DC converter output voltage sensing. The convex terminal arrays are available with square corners (version S) or scalloped corners (version E).

RoHS-compliant and halogen-free, the CRAS0606, CRAS0612 and CRAE0612 feature a 50V operating voltage and power dissipation of 0.063W per element at +70°C. They operate over a temperature range from -55 to +155°C.

Samples and production quantities of the thick film, multi-resistance-value resistor arrays are available now, with lead times of 10 weeks.

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Automotive SMT power inductors operate up to +180°C

27th April 2016

Source:

TT electronics plc

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Posted By : Nat Bowers

Automotive SMT power inductors operate up to +180°C

Designed for use in high temperature, high power, automotive applications, TT Electronics has announced a range of SMT power inductors. The HA72T-06 series inductors meet the growing automotive market’s demand for certified, high power inductors for high efficiency DC/DC converter deployment using high switching frequencies up to 3Mhz as well for as EMI and low pass DC ripple filters in high temperature environments.

TT Electronics’ HA72T-06 series inductors are designed with the latest composite moulded core materials to maximise inductance, temperature performance and saturation current while minimising DC resistance and physical size. The result is a compact, surface mount component that operates in demanding environments with currents up to 45A. Specific automotive applications range from powertrain use to inclusion in electric power steering, braking, transmission control, engine control and lighting.

The HA72T-06 series has been designed as a +180°C, high temperature rated moulded inductor for high stress environments that require high current saturation levels. This extremely high operating temperature capability positions theHA72T-06 series ahead of similar components available from competitors, say TT Electronics.

In terms of reliability, HA72T-06 inductors are mechanically robust and resist corrosion in humid environments. Their magnetically shielded design improves system level EMI performance. They are suited for high power density applications where size is critical and AEC-Q200 certification and performance are required.

TT Electronics’ HA72T-06 automotive certified inductors will be of interest to system designers, component engineers, design engineers, purchasers and buyers for use in automotive powertrain, HEVs, start-and-stop systems and electric power steering applications.

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RF IC enables keyless entry & low-power tracking

25th April 2016

Source:

Melexis

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Posted By : Nat Bowers

RF IC enables keyless entry & low-power tracking

Combining a sophisticated multi-channel RF transceiver with a 3D low frequency (3DLF) interface that supports ultra-low power operation, the MLX73290-A has been unveiled by Melexis. This RF IC is optimised for use in vehicle activation, logistics and IoT applications such as passive keyless entry & start, secure access and low-power tracking systems, where a very-low power wake-up function together with long range, high speed RF feedback are mandated.

The 3DLF interface features an automatic and fully programmable scan mode, constantly polling for a valid Low Frequency (LF) signal on the 3 differential receive coil inputs. This permits a typical 4µA power consumption in LF detection mode. The LF-RSSI feature allows precise monitoring of the received LF field. Working in combination with the system’s host MCU, it can run in passive transponder mode and thereby support battery-less operation.

Optimised for use in the sub-GHz ISM bands, 300-960MHz, the highly integrated RF IC delivers a transmitter output from -20 to +13dBm. It has a receiver sensitivity down to -120dBm in a 15kHz channel bandwidth. A 250kb/s maximum data rate is supported. Modulation schemes that can be used are On-Off Keying (OOK), Binary Frequency Shift keying (FSK), Minimum Shift Keying (MSK), Gaussian Minimum Shift Keying (GMSK) and Gaussian Frequency Shift Keying (GFSK).

Engineers can program the MLX73290-A through its SPI, with a multitude of different parameters being adjustable – RF output power, RF bandwidth, modulation type, LF polling mode, LF/RF packet handlers, etc. Specific application requirements can thus be addressed, without any need for compromise. Evaluation boards and software tools are available to accompany this IC, making it easier to deploy.

When combined with the MLX74190 high power initiator device, the MLX73290-M sub-GHz ISM transceiver and an MLX81109 LIN slave interface, the MLX73290-A becomes part of a highly effective passive start solution for 2-wheelers (such as motorcycles, scooters, etc.), all-terrain vehicles and secure door entry systems.

Supplied in a 5x5mm 32-lead QFN package and operating over a temperature range from -40 to +105°C, the MLX73290-A is available now.

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Electric water pump application for automotive sector

8th April 2016

Source:

Morgan Advanced Materials plc

Posted By : Jordan Mulcare

Electric water pump application for automotive sector

Morgan Advanced Materials has delivered a type of bearing for electric water pump applications in cars which reduces component count, while optimising performance and engine efficiency. Within the automotive sector, there has been a notable shift from traditional, belt-driven coolant pumps to electrical equivalents, on the basis that these reduce demand on the belt drive, offering a substantial improvement in performance and greater overall efficiency with ‘on-demand’ cooling.

The design of these pumps typically feature an impeller shaft which is supported by two bearings. Morgan was approached by a customer with the challenge to provide a less cumbersome bearing solution without compromising overall pump performance and cooling capability.

Drawing on its world-leading expertise in materials science and molding technology, Morgan successfully produced a bearing solution comprised of its P5600H proprietary carbon graphite material with a length-to-diameter ratio of two, which also included numerous face details and Inner Diameter (ID) and Outer Diameter (OD) slots. Morgan’s solution was more cost-effective and offered a substantially greater ease of assembly, as well as containing the vital component features which aid lubricaion and prevent slip and anti-rotation.

While engineered plastics can also be used in this kind of application, they are typically not as strong and are more suscepitble to wear and creep. Materials like Morgan’s proprietary carbon are, however, significantly better suited to the demands placed on them. Typically they have longer lifespans due to their impressive tribology, stability at high temperatures and resistance to wear and tear. This is of high importance for bearing components as in the event that one sub-component becomes faulty, the entire unit must be replaced, resulting in additional cost and the disruption associated with increased warranty claims.

Michael Ritter, Morgan Advanced Materials, explained: “Morgan’s proprietary method for producing bearings of this geometry has enabled us to deliver a range of performance advantages otherwise unattainable with conventional molding technologies. Using our unrivalled expertise in the fields of materials science and application engineering, we were able to develop a process that allowed us to provide a superior solution in terms of performance and cost. Our constant focus on innovation and problem-solving is what drives us forward as a business, allowing us to solve our customers’ most pressing engineering problems.”

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Dual picture video processor targets automotive panels

13th April 2016

Source:

Toshiba Electronics Europe

Posted By : Nat Bowers

Dual picture video processor targets automotive panels

Toshiba Electronics Europe has announced a dual picture video processor designed for high resolution automotive displays. The TC90195XBG supports 1920×720 panels at 60fps and 1920×1080 panels at 30fps for navigation, entertainment and driver support systems that are increasingly found in cars.

The TC90195XBG incorporates a built in picture improver circuit to enhance low resolution images for display on high resolution panels. It can also output two digital video signals, to a WXGA+ panel and a WVGA panel simultaneously.

With its built-in frame memory and a line-drawing engine, the TC90195XBG can be used for rear view camera systems as well as supporting infotainment and rear seat entertainment systems.

The processor supports picture composition and picture separation modes with internal frame memory. The input stage complies with LVDS (OpenLDI) and LVTTL; a single image is composed from these two signals and displayed to a WXGA+ panel. Alternatively, it can separate the signals and output them independently to two panels, with 1280×720 (LVDS output) and 800×480 (LVTTL output) resolutions.

Samples of the TC90195XBG dual-picture processor are available now and mass production is scheduled to start in June 2016.

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Chip capacitors focus on automotive applications

30th March 2016

Source:

TTI Europe

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Posted By : Mick Elliott

Chip capacitors focus on automotive applications

Two new series of Multilayer Ceramic Chip Capacitors for automotive applications from TDK are now available in Europe at distributor TTI. Featuring TDK’s advanced precision technologies that enable the use of multiple thinner ceramic dielectric layers, the CGA Series Automotive Grade is available in two variants: General for applications up to 50V, and Mid Voltage for applications between 100V to 630V.

The new TDK CKG Series Automotive Grade MLCC MEGACAP Type features a double-stacked structure which achieves twice the capacitance of existing products in the same footprint.

The CGA Series General has a monolithic structure which ensures superior mechanical strength and reliability. Low ESL and excellent frequency characteristics allow a circuit design that closely conforms to theoretical values.

Further benefits of the Series include low self-heating and high ripple resistance due to low ESR. These AEC-Q200 compliant MLCCs suit automotive engine control units, automotive sensor modules and battery line and switching power supply smoothing applications.

The CGA Series Mid Voltage automotive MLCCS covers a range of rated voltages from 100V to 630V and a capacitance range up to 15µF.

Featuring excellent DC Bias properties, the product line offers a comprehensive choice of parts suitable for most requirements. Applications include inverter or DC-DC converter decoupling, smoothing and snubber circuits in hybrid electric vehicles and electric vehicles.

In addition to offering twice the capacitance in the same footprint, the CKG Series MEGACAP Type MLCC also features lower ESR and ESL than AI capacitors.

The capacitors are capable of absorbing thermal and mechanical stresses and also features improved vibration performance. Suitable automotive applications include smoothing circuits, DC-C converters, LED and HID applications, piezoelectric and temperature variable applications.

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In-vehicle USB chargers save tooling and engineering costs

29th March 2016

Source:

Molex Incorporated

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Posted By : Joe Bush

In-vehicle USB chargers save tooling and engineering costs

A range of pre-assembled, off-the-shelf, USB battery chargers for multiple in-vehicle locations from Molex, are now available throughout Europe through TTI. The parts deliver 5V and 1.5A, are compliant with battery charging (BC) 1.2 standards and help save tooling and engineering costs.

The parts have been designed for existing rocker switch panels for commercial vehicles and are compatible with Molex’s automotive I/O connectors. The compact single charger design enables a charging port integration throughout the vehicle. The power supply architecture is adaptable to existing application requirements. All electrical, mechanical, environmental, e electromagnetic interference (EMI), electrostatic discharge (ESD) and signal integrity testing has been completed.

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15nm eMMC NAND Flash targets automotive applications

5th January 2016

Source:

Toshiba Electronics Europe

Posted By : Nat Bowers

15nm eMMC NAND Flash targets automotive applications

Toshiba Electronics Europe announces a range of 15nm eMMC (embedded MultiMediaCard) NAND Flash memory for automotive infotainment and industrial applications. Available in an 11.5x13mm package that is fully compliant with the latest JEDEC eMMC standard, Toshiba’s 15nm eMMC chips are among the world’s smallest.

The automotive eMMC supports a wide operating temperature range from -40 to +85°C and meets AEC-Q100 specifications as well as adhering to PPAP requirements.

The new line-up of single-package embedded NAND flash memories is extremely well-suited to the demanding requirements of the automotive infotainment market, and includes densities from 8 to 64GB. Each device integrates a controller to manage basic control functions for NAND applications.

According to industry analyst firm Gartner, the majority of vehicles will be connected to the internet within five years, with 60 to 75% of them being capable of consuming, creating and sharing web-based data. From maps and weather conditions to voice recognition, entertainment, driver assist features and more – cars are quickly becoming much more than just modes of transportation. Accelerated processing power and increased data storage capacity are crucial to enabling all of this connectivity, and Toshiba’s eMMC NAND Flash memory has emerged as the data storage technology of choice for automotive applications.

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Single-line ESD protection diodes save board space

7th January 2016

Source:

Vishay

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Posted By : Nat Bowers

Single-line ESD protection diodes save board space

Measuring only 1.95×1.5×0.95mm, Vishay Intertechnology has released two bidirectional single-line ESD protection diodes in the compact SOD-323 package. The space-saving VLIN1626-02G and VLIN2626-02G offer low capacitance and leakage current for the protection of automotive data lines against transient voltage signals.

For LIN bus applications, the diodes provide transient protection for one data line as per IEC 61000 4 2 at ±30kV (air and contact discharge). The AEC-Q101-qualified devices feature a typical low load capacitance of 15.5pF (typical ) and 18pF (maximum), low maximum leakage current of less than 0.05μA, and working voltages of -16/+26.5V or ±26V.

The protection diodes are lead (Pb)-free and RoHS-compliant. Samples and production quantities of the new VLIN1626-02G and VLIN2626-02G are available now, with lead times of eight weeks for large orders.

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Integrated automotive Lidar enables ADAS applications

7th January 2016

Source:

LeddarTech

Posted By : Nat Bowers

Integrated automotive Lidar enables ADAS applications

At CES 2016, LeddarTech is demonstrating how Leddar detection and ranging technology can be integrated into standard automotive components (such as headlamps, rear lamps or side view mirrors) to enable the development and deployment of highly-optimised ADAS sensing solutions.

Examples of lighting system assemblies demonstrating Leddar integration for ADAS sensing will be showcased during CES in collaboration with OSRAM Opto Semiconductors. Sensor performance assessment data and on-road trial results will also be presented.

Available to OEMs and sub-system manufacturers for integration into mainstream automotive products, the cost-effective Leddar optical time-of-flight technology delivers unmatched range-to-power ratio for superior sensing performances in a compact, flexible format, thus accelerating the deployment of reliable active safety systems from luxury to economy car segments alike.

According to Praveen Chandrasekar, Consulting Director & Research Manager, Automotive & Transportation, North America, Frost and Sullivan: “ADAS/Automation is the fastest growing segment in the European and US automotive markets. The overall uptake rate or number of new cars shipped with ADAS systems are expected to exceed 30% of all vehicles sold in North America by 2020 and an even higher percentage in Europe.” Chandrasekar expects ADAS global demand to grow at a CAGR of 24% over the next 5 years.

Various sensing technologies considered for ADAS show promising detection capabilities, but many fall short when it comes to meeting key automotive requirements such as range, form factor, robustness or cost. “Recent market studies reveal that consumers do value the advent of new automotive safety features but remain very price sensitive. Hence, ADAS solutions will have to be very cost-effective without compromising on performance in order to achieve a high rate of adoption by the mainstream car buyers,” states Michael Poulin, Director of product management, LeddarTech.

Leddar solutions bridge the cost, performance and form factor gaps experienced with previous ADAS optical time-of flight sensors. “LeddarTech has developed a unique, patented optical detection technology that can be integrated into ICs and which makes optimal use of every photon to deliver the best range-to-power ratio in the industry,” said Poulin. “Since light sources and optics represent a significant portion of the cost of an optical sensor, Leddar’s superior sensitivity means you can use more affordable optical components to achieve the required level of performance.”

Leddar sensor modules integrating OSRAM Opto Semiconductor light sources such as the SFH4725S high-power IR emitter and SPL-LL90 pulsed laser diodes are readily available. Providing a distance range which can exceed 150m and multi-segment detection over fields of view from 9 to 180°, Leddar technology overcomes many limitations of traditional fixed-beam Lidars. According to OSRAM’s Product Marketing Manager Rajeev Thakur,: “Leddar sensors’ performance may be further enhanced with the addition of OSRAM product concepts being developed for ADAS, such as a new high power pulse laser with integrated driver in a SMD package (905nm; 75W – in the future less than 100W; 5ns switching time) and an upcoming 2×8 photodiode array which would add to Leddar’s versatility.”

Leddar sensing technology provides highly reliable detection and ranging capabilities for a variety of obstacles (i.e. vehicles, structures, pedestrians & cyclists) over a wide field of view without any moving parts in virtually any weather, temperature or lighting conditions, making it a logical choice for automotive ADAS.

“Leddar truly represents a technological breakthrough which enables the high-volume deployments of optical time-of-flight sensing as part of various ADAS systems targeting the mainstream automotive market segments,” said Charles Boulanger, CEO, LeddarTech. “We see tremendous interest from automotive OEMs and sub-system manufacturers to integrate Leddar sensing in either dedicated active safety applications or as part of a more comprehensive sensor fusion solution aiming towards autonomous vehicles.”

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