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TPS1HC100-Q1: TPS1HC100BQPWPRQ1

Ali Khan
Intellectual 820 points
Part Number: TPS1HC100-Q1
Other Parts Discussed in Thread: TPS27SA08, TPS1HC30-Q1

I have to run a heater at 12V 10A 120W or 24V 5A 120W . Can TPS1HC100BQPWPRQ1 handle these requirements? These are the maximum values that i am expecting. In practical, it probably run at lower current like 7A or 4A .If this chip do not meet this requirements then i need alternative
of it if available.
Thanks

  • 0
    TI__Mastermind 19555 points

    Ali,

    All of the automotive high-side switches we offer are going to be designed for 12V automotive systems and would not be applicable to 24V systems. The TPS27SA08 (industrial device), however, would be able to handle the 12V 10A and 24V 5A cases. 

  • 0 in reply to Timothy Logan
    Intellectual 820 points

    Hi

    Thanks for your reply.
    I will consider TPS27SA08. Can i simply replace the TPS27SA08 with TPS1HC100BQPWPRQ1? I already designed the circuit or I need to change other components as well?
    I am hoping it is just alternative with higher ratings.
    Thanks

  • 0 in reply to Ali Khan
    TI__Mastermind 19555 points

    The TPS27SA08 is from a different device family so it will not be pin-to-pin compatible and will require some rework. The TPS1HC30-Q1 is a lower RON higher current version of the TPS1HC100, however it is also only made for 12V automotive systems and can only handle 4.5A of continuous load current. 

  • 0 in reply to Timothy Logan
    Intellectual 820 points

    Hi

    I have some questions regarding pins of this IC. Also, i need schematic review. Can you help me with it Plz? I want to share it in private message.
    I am not much interested in diagnostic feature but i want to keep it for future use. 
    There are two main pins that provide all fault information i.e. SNS and ST. Correct?
    According to this table,
    The ST pin only gives indication while SNS pins might provide actual information based on the ADC.


    I believe ST pin is not more important, if i am using SNS pin. Correct?
    What should be the RPROT value?
    I only interested to know about current information and i have to control a heater power based on that information. Can i simply ignore SELX pins? or connect them with some fixed node to get this information?

    Same for DIA_EN pin?

    Thanks

  • 0 in reply to Ali Khan
    TI__Mastermind 32650 points

    Hi Ali,

    Please contact your TI sales representative for any email. You can also share the schematic here.

    SNS and ST provide similar fault information if the SEL pins are set up to output the channel current. If the SNS pin is used to output supply voltage or device temperature then the dault is only shown through the ST pin.

    15kOhm is an acceptable value for RPROT.

    Please use this table to find information on floating or connecting to GND for unused pins:

    Thanks,

    Shreyas