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TIDA-01167: ISO16750-2 Testing Levels

Antonio Fadhel
Genius 9410 points
Part Number: TIDA-01167
Other Parts Discussed in Thread: LM5060

Hi,

My customer is looking into TIDA-01167 for a 24V battery truck application, but has the concerns below about the solution size and level of testing. Can you please comment and propose any changes or alternative solution if needed?:

I have read through the documentation for the reference design and it rises a few red flags to me. Why was it not tested up to the toughest spec (202V  and 1 ohm) of ISO16750-2? I guess I know the reason, but omitting some graphs or tests makes me think that there is something less favourable. The fact that the LM5060 relies on 3 large external TVS’ to handle the peak voltage also affects the total footprint and BOM cost. Today we have one 200V 1.5kW SMC, one DPAK MOSFET, some discretes and it handles 250V steady state for about 30 seconds and passes the 202V 1R pulse 5 with Class A.

Thanks,

Antonio

  • 0
    TI__Prodigy 440 points

    Hello Antonio,

    Like every standard, ISO16750-2 has a bandwidth of parameters. Every OEM will provide the appropriate spec based on their vehicle design and system parameters. Load dump behavior and parameters provided by OEM should be considered as requirements for the design.

    TIDA-01167 is built for the pulse of 175V and Internal resistance of 4 ohm, if there is a change in spec design can be adapted to support the spec. There are multiple ways of implementation for this requirement. TIDA-01167 is one of design which supports multiple functions such as OV, UV, OCP(over current protection), Reverse Polarity Protection and withstand ISO7637-2 and ISO16750-2 pulses.

    If i look at the data provided by customer, i have few concerns.

    1) There is no load pulse requirement for 30s, it is more or less considered as DC voltage

    2) If 200V TVS is used with 1 ohm, for a 250V pulse TVS will be clamping to 200V, around 50A(based on TVS) of current for 30s. This is a challenge with one TVS diode.

    3) D PAK MOSFET might have used to regulate the voltage from 200V to 24V. As there is no info of load current it is hard to comment on functional status Class A.

    Thanks

    Regards

    Rama

  • 0 in reply to Rama Chandra Reddy Kambham
    TI__Genius 9410 points

    Thanks for the feedback, Rama. I will share more detailed requirements offline.