Low Cost Hardware Design Techniques for Robust and Reliable Power-Supply Circuits for Automotive ECUs Tata Motors, Limited

Format:

Conference/Event

Author/Creator:

Vaidya, Vaidya, author.

Conference Name:

SAE 2012 World Congress & Exhibition (2012-04-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 2012

Summary:

Power-supply forms a key hardware block for every automotive ECU. Apart from delivering robust and reliable logic supply voltages it is also burdened with many auxiliary tasks like transient protection, good EMI/EMC performance, Power-hold function, Analog Sensor supply voltage et cetera It also needs to meet all automotive norms including short to battery/ground et ceteraThis paper discusses low cost implementation techniques which maximize the value delivered to the vehicle application at minimal cost. Innovative techniques are described for combining sensor and logic supplies wherever applicable. Hurdles faced during such circuit optimization are clearly explained along with the solutions adopted to overcome hurdles yet meeting automotive test norms. A novel low cost concept which combines transient protection as well as power-hold function (without using the conventional relay based technique) further adds value to the end application. The paper also includes lessons learnt during EMI/EMC tests and low cost solutions devised for the same. The paper ends with a case study for a real life ECU application and lists the relevant test-results to confirm that the circuit meets automotive norms including wave-forms during transient tests as well as power-hold tests

Notes:

Vendor supplied data

Publisher Number:

2012-01-0790

Access Restriction:

Restricted for use by site license