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TPS53513: Layout recommendation unclear - RCC parallel to Inductor

Part Number: TPS53513
Other Parts Discussed in Thread: TPS53313

Hi!

my customer wants to use TPS53513, but this note in the datasheet is not clear:

Is this network required for the TPS53513? If yes, which values do you recommend?

Kind regards,

Marion

  • Marion,

    Those components are for an external ripple injection circuit.  TPS53313 uses DCAP3 control mode.  Thee is an internal ramp generator, so in most cases the external ripple injection is not required.

  • Hi John,

    my customer wrote:

    In case where this external ripple injection must be used I guess the value have to be adjusted, do you have a procedure to perform this? I understood this component must not be populated but which kind of capacitor and resistor package do you recommend? 0402 package could be suited?  

    Kind regards,

    Marion

  • Marion,

    See this application note:

    It probably has all the info you need and then some.

    I don't see any reason why you cannot your 0402.  We use a lot of 0603 on our EVMs because they are easier to wrk with if you want to make modifications.