LMZ35003 set with Rrt= 267kOhm for a 800 KHz switching frequency 5 Volts out

Max Orlarey

If I have a light load 175mA at 5 Volts output, What kind of input voltage limits, would I have in ref. to pulse skipping.

How much ripple. I would think running at 800 KHz would be better then 500 KHz for the pulse skipping effect, yes or no?

Thank you

Max

0 Peter Meaney over 8 years ago

Hi Max,

Your post belongs in the non-isolated dc/dc forum, let me move it and one of my colleagues will pick it up there.

Regards

Peter

0 J Arrigo over 8 years ago

To avoid pulse skipping, for 5V output and 500kHz switching frequency, the input voltage range would need to be 8V to 26V.

Adjusting the switching frequency higher to 800kHz, will limit the Vin range to 8V to 21V.

0 J Arrigo over 8 years ago in reply to J Arrigo

The voltage ranges in my last post apply to a 175mA load.

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