Automotive system ICs

Bosch ICs are customised for specific application in the vehicle system
(= application-specific ICs).
Some require only minimum additional information to carry out difficult control operations or take vital decisions in a flash.

While others comprise a well-defined set of functions to keep control units in the vehicle compact and efficient. Individual customer needs of suppliers and OEM can be customised by programming.

Bosch ICs stand for quality and stability. They are designed and tested using cutting edge technologies, so as to allow failsafe working over the entire life of the car.


Modern types of vehicles include a number of electronic control units. The integrated circuits (ICs) are an essential component of such units. The ICs interact with one another in the system and ensure movement, information and safety. As one of the first suppliers, Bosch began with the development and production of such sophisticated integrated circuits as early as the 1960s.

Airbag systems
Airbag system ICs combine all peripheral system functions of an airbag system in one single chip: digital crash sensor interfaces, firing loop drivers, extensive safety and diagnosis mechanisms and the power supply for the entire system.
In addition, Bosch offers ICs for dedicated functions like firing loop drivers, digital sensor interfaces and others.

Engine management systems
Bosch system ICs for engine management systems combine the power supply with additional peripheral functions. Virtually all current microcontrollers are supported.
The portfolio also covers a wide range of ICs for dedicated system functions such as power supply, sensor interfaces, oxygen sensor control, drivers for direct injection, ignition and other loads or actuators.

Transmission control systems
In transmission control systems, the system basis chipset provides the system power, disables the starter in case of gearbox malfunction and ensures proper system function by various monitoring routines.
Current regulators set the currents for magnetic oil valves rapidly and precisely to the desired value - crucial for fast and smooth gear shifting.

In-vehicle communication
For many years CAN has been the most popular in-vehicle communication bus. CAN drivers form the physical interface between control units and bus lines according to ISO11898.
Protocol controller ICs enable any microcontroller to communicate with another device via the CAN protocol.

Alternator electronics
By adjusting the rotor current, Bosch alternator regulators set the output voltage to a constant level, regardless of the actual engine rotation speed.
Regulators with LIN interface allow for interaction with the engine control, i.e. set the output voltage to a desired level of switch-off the alternator during acceleration.

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