• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 62 subscribers
  • Views 197 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS2493: Question of input capacitor etc.

K.Shidara
Expert 3225 points
Part Number: TPS2493

Hi Team,

Would you provide email list so that I can inform detail customer information

to you about below questions including circuit diagram.

Q1. It is difficult to use a fuse, so the input capacitor (C1) and diode (D1) in the circuit example on the data sheet cannot be placed.

Can you tell me if there is any alternative?

Q2. Could you tell me how to calculate the current detection value when inserting a resistor between the Vcc pin and GND?

Q3. Driving capability of external FET of TPS2493?

Thanks

Best regards,

Shidara

  • 0
    TI__Guru* 95871 points

    Hi Shidara,

    Thanks for reaching out!

    A1. Input capacitance is optional. you can reduce to very low value such as 100nF. However, TVS diode is still needed to clamp the transient voltages with in the abs max voltage of TPS2493

    A2. Please use design calculator to find Rsense. It is available at http://www.ti.com/product/TPS2492/toolssoftware

    A3. The GATE drive strength is 22uA. It is capable to drive multiple parallel FETs, more FETs in parallel means higher effective capacitance and hence slower turn-on time.

    Please email me directly if you want to share any confidential information.

    BR, Rakesh

  • 0 in reply to Rakesh
    TI__Guru* 95871 points

    Hi Shidara-san,

    I have replied to your email.
    As we are discussing over email. Please close this thread as resolved.

    Best Regards,
    Rakesh