Alternator Regulator

Overview

Infineon’s flexible portfolio of automotive qualified LIN alternator regulator ICs complies with various LIN specifications and helps to simplify design.

Infineon’s monolithic alternator regulator control ICs are designed for the voltage control of automotive 12V multi-phase alternators, an important component for automotive applications. The regulators are AEC-Q100 qualified and tailored to withstand the harsh conditions of the automotive environment. The standard LIN interface enables communication with an engine-management or energy-management ECU (LIN 1.3 / LIN 2.1 / LIN 2.2). By using free-adjustable parameters, the automotive alternator voltage regulators can continue to operate even without a communication interface.

The Infineon alternator voltage regulator IC family is compliant with various LIN regulator specifications (including VDA) and is therefore qualified and released by many original equipment manufacturers (OEMs). The output driver stage consists of a high-side DMOS for up to 12A excitation current and all products provide 8kV ESD protection. The EEPROM with adjustable parameters offers possible customization of the alternator to the specific OEM or application needs.

The Infineon alternator regulator product portfolio offers monolithic full featured voltage regulators for alternators that are specifically designed for closed loop voltage control for 12V DC automotive multi-phase alternators with a rotating field winding.

The TLE8881-2 is the latest addition to the Infineon LIN alternator voltage regulator IC TLE888x family, and builds upon the success of the existing ICs (TLE8880, TLE8881, TLE8886) while also offering automotive alternator manufacturers several advantages, such as:

  • Easy switch
  • Flexibility
  • Enhanced regulation behavior

 

Infineon’s monolithic voltage regulator  control ICs can be used in the following 12V target applications: 12V automotive alternators with LIN interface, 12V automotive alternators with LIN interface, 12V aftermarket alternators, and 12V industrial generators.

There are multiple benefits of using Infineon’s LIN controlled alternator voltage regulator products. These include:

  • Supporting conventional alternator and start-stop systems 
  • Fully digital PI regulation with a fast and accurate performance
  • Compliant with VDA LIN-generator-regulator specifications
  • Supporting rectification with standard P/N diodes, low-loss diodes, and MOSFETs  
  • EEPROM for outstanding flexibility during on-site customization of target application
  • LIN interface (LIN 2.1 on physical layer, LIN 1.3/LIN2.1 on datalink layer)
  • Very low quiescent current (less than 80μA at 25°C), excellent EMC performance
  • High ESD resistivity of 8kV on all lines
  • High current (12A) and temperature (up to 175°C) capability  
  • Available as bare die for mechatronic brush holder as well as in automotive industrial standard packages TO-220-5
  • Green product (RoHS-compliant) and AEC-Q100-qualified

 

Alternator regulators provide secure and reliable operation in a range of application areas in the demanding automotive field, where temperature ranges can vary and a range of complex functionality is required. This can include everything from interior and exterior lighting to instrumentation and display. 

TLE8880 TLE8881 TLE8886 TLE8881-2 TLE8880 TLE8881 TLE8886 TLE8881-2 Alternator Regulator
Products
Highlights

In automobiles alternators regulators are used in to charge the battery and to power the electrical system when its engine is running.

The Infineon alternator control ICs are monolithic full featured regulators specifically designed for closed loop voltage control for 12 V automotive multi-phase alternators with a rotating field winding. This regulator is able to communicate with an engine-management or energy-management ECU via a standard LIN1.3 (datalink layer) interface. By using freely adjustable parameters, the regulator is able to operate even without any communication interface. They are qualified according to AEC-Q100 and tailored to withstand the harsh conditions of the automotive environment. 

  • Read more in the product brief here. 

 

They are qualified according to AEC-Q100 and tailored to withstand the harsh conditions of the automotive environment. The regulators are able to communicate with an engine management or engery management ECU through a standard LIN interface. The battery voltage is regulated at a precise value between 10.6 V and 16 V. By using free-adjustable parameters, the regulators are able to operate even without any communication interface.

The family is compliant to various LIN alternator regulator specifications and thus qualified and released by leading OEMs.

  • Read more in the product brief here. 
Applications
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