I'm "guessing" the actual logic circuits are proprietary and closely held as a secret. I'm "guessing" it's a matter of controlling the amount of inrush over time to "flatten out the spike".
This is an "oversimplification" hut hopefully it may help in explaining. It's a bit like pulling a vertical load with a rope over one pulley or installing a block with two pulleys. They both end up at the same place and theoretically take the same amount of energy. The block and double pully system will take twice as long due to the rope being twice the length but the energy to lift it is 1/2 as much as a single pully so 1/2 the energy for 2 times the duration equals the same amount of energy.
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel