Category: Hardware
Product Number: LT8471
I've designed a +/- 13 V power rail with the LT8471. I've used the 500 kHz ZETA and 2L Inverting Converter Topology, shown on page 36 of the datasheet. Using a 22 uH coupled inductor and 100 nF blocking caps. I see some damped oscillation on the switching node. In my LTspice simulation, I see the same oscillations. How could those oscillations be reduced? Is it necessary or preferred to reduce it, and what are the possible downsides of the oscillations? It looks like the output stage has no oscillations anymore, only +/- 15-20 mV pk noise.
oscilations with no load:
oscilations with load:
oscilations with no load:
oscilations with load:
Simulations:
Output stage noise:
