S32K344 FMEDA

[shuaishuaifei]

Hi NXP

1.where can I get FMEDA files of S32K344、MC33664ATL1RG、TJA1042T/3、MC33879APEK、MC33775AT.

2.I have got the FMEDA SEooC Static - S32K344  file, but how can we calculate our FIT value according our bms application. thanks.

[shuaishuaifei · Accepted solution]

hi r40959 naveenm

where can we find FIT value of MC33664, MC33879, TJA1042? thanks.

[r40959]

Hello,

unfortunately the FIT rate were not evaluated on those devices. Do you have a way to evaluate on your side if we provide to you the range of transistor count of those devices ?

let us know,

best regards,

[shuaishuaifei]

Hello,

ok,please provide the transistor count range for these devices.thanks

[r40959]

Hello,

MC33664 transitor count is in the range 50k-500k referring to table 5 of SN29500

TJA1042 in the category >3k referring to table 4 of SN29500

MC33879 in the category 50k-500k referring to table 5 of SN29500

thank you

best regards

[shuaishuaifei]

hello,

thank you very much

[shuaishuaifei]

hi r40959 naveenm

thank you very much.

we have another question. Could you help us?

where can we find FIT value of MC33664, MC33879, TJA1042? thanks.

[r40959]

Hello,

you can find for MC33775A in NXP DocStore website the Safety analysis report with FMEDA HW architectural metrics results "Rp698910 - Safety Analysis Report MC33775A (1.0)"

However, the MC33664, MC33879, TJA1042 are QM (Quality Managed) Auto AECQ100 products for which we don't produce a FMEDA as they are not developed according to ISO26262.

Hoping it helps you,

thank you

Best regards,

Valerie Bernon

[naveenm]

Answer to Q2: 

I have got the FMEDA SEooC Static - S32K344  file, but how can we calculate our FIT value according our bms application. thanks.

A2: The FIT is calculated as illustrated in ISO 26262 documentation, chapter 11 (ISO 26262-11:2018(E)) Section "4.6.2 Permanent base failure rate calculation methods"

Hope it helps.

Regards,

NaveenM