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LMR16006: Power Spectrum of Buck Converter Output

Part Number: LMR16006

Hi,

I'm currently using the LMR16006 for one of my products.  I'm interested in using it for another project, but a question was raised about the spectrum of the output voltage.  I'm using the buck converter to power a sensor that is very sensitive to 10-25kHz power supply noise.  I noticed that the switching frequency range of the LMR16006 is at least 10x higher than the bandwidth that I'm concerned about.  Should I be concerned about sub-harmonics of the switching frequency creating 10-25kHz spurs on the output voltage?  Is there any information that I can find about what the output spectrum might look like.  For reference, I'm looking to convert from +9 to +18V input down to +5V output.

Thanks for the help!