Anti-Lock Braking System (ABS)

Anti-Lock Braking System Solutions from Texas Instruments

Block Diagram

Click on the colored blocks to view or sample recommended solutions


Design Considerations

An anti-lock braking system (ABS) is a safety system that allows the wheels on a motor vehicle to continue interacting with the road surface as directed by driver inputs while braking, thus preventing the wheels from locking up and avoid skidding. An ABS generally offers improved vehicle control and decreases stopping distances on dry and slippery surfaces for many drivers.

The primary input of the ABS system is the wheel speed sensor interface. Comparison of wheel speed sensor inputs can determine if individual wheels are slipping. Wheel speed sensors are typically Hall Effect, with preconditioning required to generate a readable digital PWM input to the MCU.

Microcontroller – An automotive-grade ARM based microcontroller is used to compare speed sensor data, control brake cylinder pressure and control the return pump for each wheel brake cylinder. The MCU is also responsible for diagnostics, warning notification and communication with other on board control units. Newer automotive MCUs from TI can provide evidence of their suitability for use in systems where IEC61508 and ISO26262 safety standards compliance may be required.

Anti-Lock Braking IC – The TPIC7218 is an antilock brake controller designed for use in harsh automotive environments, requiring few external components. It has eight high current low-side drivers for use with solenoid valves, four configurable wheel speed sense inputs capable of handling both Intelligent and Active sensors, and high-side gate drivers for controlling two external N-channel MOSFETs for use with a pump motor and master relay.

Power Management - The TPS65381-Q1 is a multi-rail power supply designed to supply microcontrollers in safety-critical applications, such as those found in automotive. The devices supports Texas Instruments' TMS570LS series 16/32-bit RISC flash MCU and other microcontrollers with dual-core lockstep (LS) or loosely coupled architectures (LC).

Application Notes (10)

Title Abstract Type Size (KB) Date Views
HTM 8 KB 06 Sep 2011 1149
HTM 8 KB 06 Sep 2011 1031
HTM 8 KB 06 Sep 2011 1972
HTM 9 KB 06 Sep 2011 1130
HTM 8 KB 06 Sep 2011 962
HTM 8 KB 06 Sep 2011 1003
HTM 8 KB 23 Feb 2011 996
HTM 8 KB 30 Aug 2010 1991
HTM 8 KB 13 Jul 2010 973
HTM 8 KB 10 Mar 2010 1170

User Guides (4)

Title Abstract Type Size (KB) Date Views
htm 8 KB 03 Apr 2013 1907
htm 8 KB 14 Sep 2012 1325
htm 8 KB 17 Nov 2011 1265
htm 8 KB 17 Apr 2011 1296
    

Selection and Solution Guides

Selection Guides (2)

Title Abstract Type Size (KB) Date Views
PDF 647 KB 16 Jan 2014 4787
PDF 4.53 MB 12 Apr 2013 5220

Solution Guides (2)

Title Abstract Type Size (KB) Date Views
PDF 2.52 MB 12 Dec 2013 8741
PDF 4.43 MB 08 Oct 2013 7600

Product Bulletin & White Papers

White Papers (2)

Title Abstract Type Size (MB) Date Views
PDF 1.62 MB 16 Sep 2011 2186
PDF 1.64 MB 02 Sep 2011 2584

News Releases & Authored Articles

Visit the News Center

Similar End-Equipment Solutions

TI End-Equipment

All TI End-Equipment Solutions

Support and Community

Wikis

Visit the TI Wiki

Training & Events

Name Type Available During
Implementing Digital Motor Control with High Performance, Low Cost MCUs
Advanced digital motor control was only an option for high end motor drives and expensive equipment up until now.
On-Line Training   On Demand  

See More Training & Events

Other Support