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TVS2200: Surge Clamp Characteristics

Koshi Ninomiya
Expert 5605 points
Part Number: TVS2200


Dear Team,

My customer is evaluating the TVS2200DRVR to clamp surge on AC Adapter input line of  VIN=19.5V.
They would like to know the following characteristics of surge clamp of the TVS2200.

1) Is there a characteristic diagram showing the relationship between temperature and clamp voltage?

2) If the pulse is shorter than IEC 61000-4-5 Surge (8/20 us), is there anything they should be aware of?
    As a result of their evaluation, the actual measurement is about 1.5/3 usec, and the maximum current value is 15A.

3) Is there a limit to the number of surges when used within the specified limits (e.g. 20A)?

4) When using a TVS2200 suege protection device as an anti-inrush like this time, is there anything to be aware of in the layout?

Best Regards,

Koshi Ninomiya

  • +1
    TI__Genius 9200 points

    Hi Ninomiya-san, 

    Please see below for answers:

    1. Clamp voltage vs temperature can be found in the datasheet - Figure 7-8

    2. Everything should be okay if it is a shorter pulse. If the customer comes across any problems, reach out and we can help. 

    3. We did reliability testing on this part. It was 5000 repetitive pulses at 35A at 125C. More info can be found in section 8.4 of the datasheet. 

    4. For layout, we always recommend placing the TVS diode as close to the connector or source of the transient event. Section 9.4 has information on layout. 

    TVS2200 Datasheet

    Best,

    McKenzie

  • 0 in reply to McKenzie Eaker
    TI__Expert 5605 points

    Hi McKenzie-san,

    Can you please let me know regarding #3?
    If the pulse is single and not repetitive puse, is there a limit to the number of surge times?

    Best Regards,

    Koshi Ninomiya

  • 0 in reply to Koshi Ninomiya
    TI__Genius 9200 points

    Hi Ninomiya-san, 

    We have not done any testing for single pulses over time. 5000 pulses at high temperatures with little time between pulses is quite strenuous, so I expect the device to withstand well past 5000 pulses. 

    What is the application for this? Will it be receiving pulses often?

    Best,

    McKenzie

  • 0 in reply to McKenzie Eaker
    TI__Expert 5605 points

    Hi McKenzie-san,

    The application is for surge protection at Barrel Jack input from AC Adaper. So, the customer should consider the number of times the user has unplugged and unplugged the barrel jack.

    Best Regards,

    Koshi Ninomiya