• State TI Thinks Resolved
  • Locked Locked
  • Replies 3 replies
  • Answers 1 answer
  • Subscribers 62 subscribers
  • Views 277 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Original question:

LM74502-Q1: could it pass the ISO7637-2 pulse 1~4 and ISO16750-2 pulse test-A/B in 12/24V systems?

LM74701-Q1: pass the SAE J1455 test and SAE J1113-11 test in 12/24V systems?

Henry Wang3
Expert 2805 points
Part Number: LM74701-Q1
Other Parts Discussed in Thread: LM74800-Q1

Hi Sirs,

My customer is interested in the TVS-less ideal diode device LM74701-Q1 and has a question about the compliance test result.

Could it pass the SAE J1455 test and SAE J1113-11 test in 12/24V systems?

SAE J1455 for trucks (1994-08) [Pulse C / Pulse D / Pulse 1b/ Pulse 2a/ Load dump 5a]

SAE J1113-11 for 12 V & 24V system [Pulse 1c / Pulse 2a/ Pulse 2b/ Pulse 3a/ Pulse 3b/Pulse 4]


If it can't, which device can pass these compliance tests?

  • 0
    TI__Guru 57737 points

    Hi Henry,

    The ISO 7637-2 and ISO 16750-2  tests are similar to that of tests in SAE J1455 test and SAE J1113-11.

    Can you check with customer if ISO 7637-2 and ISO 16750-2  Automotive test results published in datasheet will suffice ?

  • 0 in reply to Praveen GD
    Expert 2805 points

    Hi Sir,

    After checking with the customer about the automotive test results, they ask another question for LM74701-Q1, can it pass the load dump pulse-5A for 24V-system?

    Due to they saw the LM74701-Q1 d/s only provide the test result for load dump pulse-5B for 12V-system.

    load dump pulse-5A:

    load dump pulse-5B:

  • 0 in reply to Henry Wang3
    TI__Guru 57737 points

    Hi Henry,

     The peak voltage of load dump pulse-5A can go as high as 200V. To withstand this pulse, you will have to use LM74800-Q1 configured in common-source topology as shown below.