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TPS2HB50-Q1: Please review the schematic

Chase Jeong
Mastermind 7445 points
Part Number: TPS2HB50-Q1

Tool/software:

Dear TI experts,

My customer drew 1st schematic using TPS2HB50-Q1. Could you review the schematic below?

Best regards,

Chase

  • 0
    TI__Genius 10285 points

    Hello Chase, 

    The schematic looks good!

    To begin, It is recommended that VBB has 2 capacitors in parallel:

    4.7 nF to Device GND Filters voltage transients (for example, ESD, ISO7637-2) and improves emissions

    220 nF to Module GND Stabilize the input supply and filter out low frequency noise.

    In addition, VOUT has a single capacitor on the output:

    220 nF Filters voltage transients (for example, ESD, ISO7637-2)

    RSNS is recommended to be 1Kohm


    I see there are diodes on the output. What is being driven here? What is the load current?

    BR, 

    Alan