Can I use LM3481 for a system where no-load status can occur?
This is just an expanded comment and not a direct answer to your question, but all the factors of each component, layout and trace ESL and choice of IC are critical for dynamic motor-loads.
General comments.
Buck regulators are often PWM controlled RLC
Boost Regulators are generally PFM regulated RLC or Flyback Amp-second regulated at constant f.

The ones which also use Cycle skipping features can handle light loads better.

Vector Impedance of source, converter and loads
If you understand the impedance ratio effects of a linear transformer for Zin and Zout, then you know that the ideal impedance ratio is the square of the voltage ratio in both directions.  For a boost converter implemented by DCDC, let's call it a non-linear transformer.
To understand how non-linear impedance is measured consider Z(f)= ΔV/ΔI(f) and see lecture
Challenge #1 is handling low output loads for the Boost Converter.(explained in link above)
The AC impedance with Capacitor loads on both source and load becomes very low from the ESR. The stability is complex and phase margin/Ripple sensitivity is beyond scope of this answer.  But if you think in terms of Vector Impedance of each element, it helps to understand the variables.
Challenge #2 is Motor Surge current and Back EMF current demand very low ESR, low ESL in Zout of the boost converter.
Recommendation.
Re-consider if you can choose a Buck regulator from AC that steps down impedance from primary to secondary, you can avoid these complications with dynamic loads and impedance step-up of &gt;4 for a non-linear voltage DC doubler.