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TPS7H2201-SP: TPS7H2201-SP

Rajan Bedi
Expert 1485 points
Part Number: TPS7H2201-SP

Hello,

I'm looking for a load switch to provide soft-start and reverse-polarity protection, the output from the isolated DC-DC is +5V and the current is ~2A. Ideally I'd like to use a commercial-grade device for an initial prototype and then swap to a space-grade version. 

Which part numbers can you recommend?

thank you

  • 0
    TI__Genius 10310 points

    Hi,

    We currently offer 2 space-grade load switches that fit your description:

    TPS7H2201-SP

    TPS7H2211-SP

    Each of these devices comes with options for full space-grade parts and unqualified evaluation units (part orderable number ending with "/EM") that are intended for prototyping use. There are no commercial equivalents as these devices are designed specifically for the space environment. 

    Thanks,

    Sarah

  • 0
    Expert 1485 points

    Dear Sarah,

    Thank you for your reply.

    What commercial part numbers can I consider for a simple lab-based prototype which offers both soft start and reverse-polarity protection?

    Thank you

  • 0 in reply to Rajan Bedi
    TI__Genius 10310 points

    Hi Rajan,

    These devices do not have commercial equivalents. My recommendation would be to utilize the "/EM" prototyping units.

    Thanks,

    Sarah

  • 0 in reply to Sarah Koch
    Expert 1485 points

    I'm aware the above devices do not have commercial equivalents, but that's not an issue at the moment and I would like to understand part numbers of your commercial-grade load switches please

  • 0 in reply to Sarah Koch
    Expert 1485 points

    Does reverse-current protection offer protection in case the input polarities are inadvertently swapped?

  • 0 in reply to Rajan Bedi
    TI__Genius 10310 points

    In that case, I would recommend utilizing the product selection tool to help you narrow down your choices since the part numbering system is not as structured as it tends to be for simpler components like capacitors or resistors.

    You can filter devices based on many characteristics like voltage/current, features (such as soft start), rating (automotive, space, etc.). You can also select which properties are displayed as columns for easier comparison. 

    Reverse current protection is intended to protect against cases where the output voltage is higher than the input voltage while the device is switched on. This is different from reverse input polarity protection. The devices I listed earlier are capable of the former - apologies on the mix up.

  • 0 in reply to Rajan Bedi
    Expert 1485 points

    Do either the TPS7H2201-SP or the TPS7H2211-SP offer reverse polarity protection in case the input polarities are inadvertently swapped?

  • 0
    TI__Genius 10310 points

    Hi Rajan,

    No, these devices were not designed for that. If the input voltage is reversed, it would violate the Recommended Operating Conditions of the device and possibly lead to damage. If this protection is needed, an external diode-resistor GND network would likely need to be used.