Littelfuse Automotive-Lösungen

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Infotainment and Navigation - Entry-level cars today integrate advanced electronic systems that were once more typical of high-end cars, including infotainment, telematics, and connectivity. Potential threats to these advanced systems include overcurrents, ESD, and surges. Littelfuse delivers comprehensive protection solutions, including SMD fuses, SMD PPTCs, TVS diodes and diode arrays, MLVs, and XTREME-GUARD™ ESD suppressors.

Vehicle Communications - V2V and V2I provides new levels of safety and efficiency by sharing data on vehicle locations and speed/direction, as well as receiving information from smart traffic signals. On-board power and communication circuits in these systems need overcurrent, ESD and surge protection using fuses, PPTCs, TVS diodes and diode arrays, MLVs, and Polymer ESD suppressors.

Lighting and Headlamps - Advanced headlamps use LEDs for roadway illumination as well as motors to level, swivel, and shutter the high and low beams. Common threats include load dump, surges, ESD, and short circuits. Solutions include SMD fuses, TVS diodes and diode arrays, MLVs, and Schottky diodes.

Cameras - External cameras support ADAS functions like Lane Departure Warning while interior cameras support eye-tracking to prevent accidents due to the drowsiness of the driver. In addition to protection against common electrical threats, data and communication buses require protection that does not interfere with high-frequency video signals. Littelfuse solutions include TVS diodes ad diode arrays, MLVs, Schottky diodes, and SMD PPTCs.

Inside Cabin Lighting - Individual user settings and automatic dimming based on external light intensity are increasingly common in modern interior lighting systems. Designers must guard against load dump, surges, ESD, overcurrents, and other threats. Choose resettable PPTCs for thermal protection of LEDs. MLVs and diode arrays offer ESD protection for user controls.

Motor Control - As mechanical/hydraulic actuators are replaced with electric motors, such as those for electric parking, braking, seat modules, and mirrors, motor control circuit protection is critical to a vehicle's overall reliability. Potential threats include load dump, overcurrents, surges, and ESD. Littelfuse offers a wide range of TVS diodes and diode arrays, MLVs, MOVs, and PPTCs to protect motor control applications.

Ignition System - The efficiency of gasoline engines and consequently their mileage and emissions are dependent on the performance of the ignition system. The latter must be protected against a variety of threats including load dumps, feedback loops, and overcurrents. In addition to the high-performance ignition IGBTs, Littelfuse offers a broad portfolio of protection devices like TVS diodes, MLVs, PPTCs, and fuses.

Electronic Control Units (ECUs) - Various ECUs are used for functions such as engine control, GPS connectivity, transmission control, door lock, and eCall. They have interfaces like power input and communication. Defense against overcurrents, surges, and ESD requires a range of circuit protection devices such as fuses, PPTCs, TVS diodes and diode arrays, MOVs, MLVs, and Polymer ESD suppressors.

eCall - In a crash, an eCall-equipped car will automatically call the nearest emergency center to summon help. Potential electrical threats to this system include load dump, overcurrents, surges, and ESD. To ensure eCall systems operate at peak performance, Littelfuse offers protection devices like TVS diodes and diode arrays, MVs, MOVs, SMD fuses, SMD PPTCs, and XTREME-GUARD™ ESD suppressors.

Engine Cooling System - Engines depend on a steady flow of cooling fluid to maintain optimal performance. Engine cooling systems need protection against threats such as load dump, surges, ESDs, and overheating. The growing range of Littelfuse solutions includes TVS diodes and diode arrays, MLVs, MOVs, Schottky Diodes, and SMD PPTCs.

Battery Management System (BMS) - The BMS maintains the safe operation of the high voltage battery and can relay information about the battery to power and energy management systems. The BMS requires protection from threats such as overcurrents, surges, and ESD. Fuses, TVS diodes, and TVS diode arrays keep this system reliable and safe under all conditions (assembly, maintenance, and normal operation).

On-Board Battery Charger - Hybrid and electric vehicle batteries can be recharged from standard power outlets by using an AC/DC converter system or directly from DC power that is covered outside of the vehicle for faster charging. Design challenges include protecting against overcurrents, overvoltages, ESD, as well as controlling switching of the input rectifiers. Littelfuse offers a broad range of high voltage fuses, varistors, GDTs, switching thyristors, and TVS diodes and diode arrays to address these threats.

Remote Keyless Entry - Remote keyless entry systems include the on-board circuitry that receives signals from a remote "fob" and unlocks doors, sounds an alarm, starts the engine, etc. These systems are exposed to electrical threats on both the powered circuits and the communication lines. Protection includes fuses, TVS diodes and diode arrays, MOVs, MLVs, and ESD suppressors.

CAN Bus Communication Systems - The CAN bus provides command and control functions through a reliable, fault-tolerant sensitive interface. Typical applications include engine control, transmission control, anti-lock braking, and other mission-critical systems. ESD and induced surges are the most common threats facing CAN bus systems. Littelfuse TVS diode arrays are specifically designed to protect sensitive I/O interfaces.

LIN Bus Communication Systems - The LIN bus is typically used for body control functions for applications such as power windows, seat controllers, sunroofs, and trunk latches. ESD and induced surges are the most common threats. Littelfuse TVS diode arrays are specifically designed to protect sensitive I/O interfaces.