Automotive-qualified power inductors are robust & efficient

Targeting LED driver and braking control system applications in the automotive market, TT Electronics announces the HA78 series of power inductors. The inductors are suited for high power density applications where size is critical and particularly where high-efficiency DC/DC converters are using high switching frequencies to 3Mhz as well as EMI and low pass DC filters.

Bearing the all important automotive industry AEC-Q200 certification, the HA78 series inductors are available in a vast range of inductance and current rating to meet the needs of virtually any relevant application. Inductance ratings from 1.4 to 1800µH and current ratings up to 10A are available.

Reliability was a key factor in the design of the HA78 inductors that feature an impressive specification including an operating temperature range of -40 to +125°C, and a maximum temperature rise of 40 from an +85°C ambient environment. Able to withstand high shock and vibration conditions, the inductors are mechanically robust for long life expectancy. Magnetically shielded and RoHS compliant, the HA78 series inductors feature low resistance values that minimise insertion loss and maximise system efficiency.

The TT Electronics HA78 inductors will find favour with automotive electronic design engineers in specific applications such as LED driver, powertrain, engine and transmission control, as well as with design engineers operating in the general industrial area for use in DC/DC converters and automation applications.

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Automotive MCUs pave the way to smart driving

STMicroelectronics has launchedthe SPC58 family of automotive MCUs that herald the advent of more secure and connected cars. The power-efficient and real-time-capable MCUs bring the world’s first Power Architecture-based devices manufactured in state-of the-art 40nm embedded Flash (eFlash) technology dedicated to car body and security applications.

The family is composed of three product lines; SPC58 B-Line, SPC58 C-Line and SPC58 G-Line, which offer from 512KB to 6MB of embedded Flash memory.

The high level of scalability allows the SPC58 family to address the ever-growing need for in-car automotive networks with high bandwidth and strong in-vehicle security. The devices combine Ethernet and ISO CAN FD communication interfaces with the latest hardware security module technology to ensure functional integrity of the car’s ECUs, intrusion detection and protection against malicious attacks.

ST’s in-house embedded Flash (eFlash) 40nm process technology is suited to integrate high performance and outstanding automotive-grade reliability in very small packages, enabling car gateways and body modules to be smarter, smaller and lighter.

Fabio Marchio, General Manager Automotive Digital Division, STMicroelectronics, commented: “Building on the success of our SPC56 Automotive MCU family, which is widely used by Tier-1 and car manufacturers, the SPC58 enables the automotive industry to raise the bar in security and in-car communications. The next generation of smarter cars will rely on electronic systems based on MCUs that provide the best combination of performance, low power consumption, high security and robustness. ST’s SPC58 MCU lines meet all these needs, making them the leading solutions for next-generation in-car controllers.”

The SPC58 family offers a highly scalable line of products with industry-leading benefits, including:

  • ASIL-B (Automotive Safety Integrity Level) compliance;
  • The highest number of ISO CAN-FD and Ethernet communication channels on the market;
  • Double the performance of previous-gen solutions, thanks to the multi-core architecture, higher system frequency and faster memory-access time;
  • The state-of-the-art 40nm Flash technology enables high integration and performance in very small packages – as few as 32 pins;
  • Perfect companion MCU for camera or telematics applications;
  • Perfect solution for in-car stand-alone and integrated gateways;
  • Assured security via the built-in HSM and related security firmwarethat ensure the highest protection against malicious attacks;
  • Option to support Over The Air (OTA) requirements allowing smart and wireless SW update; and
  • Easy portability of applications from SPC56 to SPC58, with high reuse of existing software, development tools and hardware experience.

“Tomorrow’s connected car will communicate with everything, from its internal systems such as transmission, advanced driver-assistance electronics and front panel to roadside infrastructure, emergency services and other cars. And it will have to provide the highest level of security. The SPC58 automotive MCUs, with their unique combination of performance, connectivity, security and scalability, allow car makers and their sub-system suppliers to set new standards in ensuring a safer, greener and more enjoyable driving experience.”

Samples of the SPC58 B-, C- and G-Line MCUs have been provided to lead customers and full production is scheduled for Q1 2017.

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High Q MLCCs suit automotive V2X applications

Available in capacitance values from 0.1 to 47pF, the GCQ series of high Q MLCCs has been introduced by Murata for automotive V2X applications. Featuring a C0G temperature characteristic and a rated voltage of 50VDC, the series conforms to the requirements of the automotive components standard AEC-Q200 and suits use in V2X, ADAS and other automotive applications.

Meeting the needs of the DSRC IEEE 802.11p V2X communications standard, for both V2I and V2V applications, mainly in Europe and North America using the 5.9GHz band, the GCQ series can be used for DC filtering and RF matching. In particular, the self-resonance frequency characteristic of the 2.2pF device suits DC filtering according to the DSRC IEEE 821.11p requirement.

The GCQ series is packaged in a 0402 size (1.0×0.5mm) and operates over a temperature range from -55 to +125°C. The high Q rating is achieved by the use of copper internal electrodes.

The GCQ series is now sampling and mass production is scheduled to start during the first half of 2016.

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Opto-isolated IGBT gate pre-driver IC suits EVs & HEVs

Toshiba Electronics Europe has announced an opto-isolated IGBT gate pre-driver IC with enhanced protection functions for the in-vehicle inverters of EVs and HEVs. Inverter control is used to drive the motors of electric and hybrid vehicles efficiently. As the control and drive functions have different operating voltages, they must be isolated from each other with a device such as a photocoupler.

Toshiba’s TB9150FNG is a compact, versatile, high-performance IGBT gate pre-driver IC that can address this issue while providing the necessary protection functionality.

The TB9150FNG integrates a photocoupler that secures high-level isolation between control (the primary side) and drive (the secondary side). It also incorporates a highly precise IGBT temperature detection function, a flyback transformer controller and a short circuit detection function (current sense and DESAT2 monitor) that all contribute to system downsizing.

Supplied in an SSOP48 package, the TB9150FNG measures just 10.4×12.5×2.0mm and operates over a temperature range from -40 to +125°C.

Sample shipments of the TB9150FNG started in April, with mass production scheduled for 2018.

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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

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

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

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

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

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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