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LM74610-SQEVM: Understanding Schematics For this Evaluation Board

Gerald Dalum
Prodigy 80 points
Part Number: LM74610-SQEVM
Other Parts Discussed in Thread: LM74610-Q1

I am planning on using LM74610 for reverse polarity protection and bought this evaluation board. I am seeing in the schematics and data sheet for this for C6 and C7 capacitor as a DNS or Do Not Stuff. What exactly does this mean? I am seeing a bunch of capacitors in order going to VOUT that I never saw in the schematics on the LM74610 by itself. can you explain this to help me understand this.

  • 0
    TI__Guru 57737 points

    Hi Gerald,
    For the LM74610-Q1 to work , no output capacitance is needed. Maybe you can consider using 0.1uF at output for decoupling noise.
    The output capacitance required is purely dependent on the system level specification. For example, in automotive applications, there can be short interruptions at the input during E10 tests. In this case, if you want to avoid the output voltage collapse due to line disturbance, you can consider using higher output capacitance (depending on load current, transient duration and acceptable output voltage drop).

  • 0 in reply to Praveen GD
    Prodigy 80 points

    Thanks for the input. My use case will be power from an external 24V power supply adapter connected to the board. I just wanted to use this to protect in case they wire it up backwards. Do you think in this situation,  I would need a high output capacitance or should 0.1 uF do the job?

  • 0 in reply to Gerald Dalum
    TI__Guru 57737 points

    Hi Gerald,

    For your use case, a 0.1uF cap at the output should be sufficient. 

  • 0 in reply to Praveen GD
    Prodigy 80 points

    One thing I am noticing is that these are out of stock and no date of when they will be available for us to do some test boards.Not sure if you know when these will be available to start the process and tests?