That particular circuit is just a couple of FETs that turn on/off with opposite polarity inputs. This type of circuit is very commonly paired up with a PWM controller, but the FETs aren&#;t really there to control rise/fall times of the load current. The R2-C3 snubber may reduce EMI for non-resistive loads, but they aren&#;t likely to be all that helpful.
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Designing switching circuits to pass EMI testing is not easy, and if you&#;re looking for a quick and easy fix it will be best to hire someone who understands EMI handling in power control circuits. You might be able to get away with a simple &#;soft-start&#; circuit based on MOSFETs or other switching devices, but even these require a fair amount of knowledge of the EMI limits you&#;re trying to meet - that is, if you don&#;t want to have to just try different circuits and/or component values to find what works.
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