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TPS25983: TPS25983

Hemil Gujarati
Prodigy 20 points
Part Number: TPS25983
Other Parts Discussed in Thread: TPS1211-Q1, LM74900-Q1

Title: Technical Inquiry about TPS25983 eFuse - Maximum Short Circuit Handling Capability


Hello Texas Instruments community,

I am currently working on a project that involves an automotive battery connection, and I am considering using the TPS25983 eFuse for my design. In the event of a short circuit, the current could potentially reach 1000 to 1500A, and I would like to inquire about the TPS25983's maximum short circuit handling capability.

Could you please provide information on the TPS25983's suitability for handling short circuits within the specified current range? If it is not recommended for such high currents, I would appreciate suggestions for alternative products that can handle the specified amps in automotive applications.

Additionally, I would like a technical description of the TPS25983, including key specifications, features, and any relevant application notes that may guide me in the implementation of this eFuse in my automotive design.

Thank you for your assistance.

Best regards,
Hemil

  • 0
    TI__Mastermind 20315 points

    Hi Hemil,

    Kindly check the datasheet first page for key specs or the product folder of device on ti.com.

    I don't think TPS25983 is the correct fit for this application. Can you tell me more about your application so that I can suggest you a better fit.

    Best Regards,
    Arush

  • 0 in reply to Arush Gupta
    Prodigy 20 points

    Hello Arush,

    Thank you for your prompt response. I appreciate your guidance and would like to provide more details about my application to assist in finding a suitable eFuse solution.

    Application Overview:
    I am working on an automotive project that involves handling high-current direct short-circuit conditions at the load side. Specifically, I am seeking an eFuse solution capable of protecting against pulse currents ranging from 1000 to 1500A during overcurrent events. Additionally, I would like the eFuse to provide protection before the current reaches higher levels, ideally triggering at or before 200A to safeguard the circuit.

    Design Requirements:
    1. High-current handling capacity: The eFuse should be capable of managing pulse currents in the range of 1000 to 1500A during overcurrent events.
    2. Proactive protection: It is crucial that the eFuse triggers protection mechanisms before the current rises beyond 200A to ensure robust circuit protection.
    3. Automotive-grade reliability: Given the automotive application, the eFuse should adhere to automotive-grade standards and demonstrate reliability in harsh operating conditions.

    I hope this provides a clearer picture of the design requirements. If you require any further details or if there are specific parameters you would like me to elaborate on, please let me know. I appreciate your assistance in recommending a suitable eFuse for this challenging automotive application.

    Thank you for your time and support.

    Best regards,
    Hemil

  • 0 in reply to Hemil Gujarati
    TI__Mastermind 20315 points

    Hi Hemil,

    I am adding my teammate who can help you with this.

    Best Regards,
    Arush

  • 0 in reply to Arush Gupta
    TI__Mastermind 22505 points

    Hi Hemil,

    What are the features that you require for your use case?

    By your explanation, it seems you require just a switch. Please help me understand the requirements.

    1. What is your voltage rating? 

    2. Is Reverse polarity protection a requirement?

    3. Is Reverse current blocking a requirement?

    Thanks and Regards

    Shiven Dhir

  • 0 in reply to Shiven Dhir
    Prodigy 20 points

    Hello Shiven,

    Thank you for your response and your willingness to assist with my inquiry. I'd like to provide further details to clarify the requirements for the automotive eFuse I am seeking.

    Application Overview:
    1. Voltage Rating: The automotive application involves voltage ratings between 12V to 36V DC.

    Design Requirements:
    1. Overcurrent Protection: While the application may seem like a simple switch, it is crucial that the eFuse provides protection during overcurrent events, such as direct short circuits, to safeguard the entire circuit.
    2. Reverse Polarity Protection: Yes, reverse polarity protection is a requirement to prevent potential damage when the battery is connected incorrectly.
    3. Reverse Current Blocking: The reverse blocking voltage requirement will depend on the load type. In cases where inductive loads are connected, the eFuse should handle higher reverse currents.

    Additional Information:
    If you have specific questions or need further clarification, please feel free to ask. I appreciate your assistance in recommending an eFuse that meets these requirements.

    Thank you for your time and support.
    Hemil 

  • 0 in reply to Hemil Gujarati
    TI__Guru** 103436 points

    Hi Hemil,

    Thanks for sharing your requirements.

    We have TPS1211-Q1 controller which can drive external parallel MOSFETs to support high currents. It has over current, short-circuit protection features but needs an additional circuit (as shown in app note https://www.ti.com/lit/an/sluaan7/sluaan7.pdf ) to provide reverse polarity protection. 

    TPS1211-Q1 provides reverse current blocking in device OFF state. If you need reverse current blocking in ON / active state, please refer LM74900-Q1 product and let us know for any follow-up questions.

    Best Regards,

    Rakesh