Hi,
At 300W, 100-265VAC, surely totem pole isnt much more efficient than straight BCM boost PFC?
Totem pole controllers are always digital, so they consume probably about 2W bias power anyway.
Is it worth it for a 300W PFC?
I mean, what about BCM Boost PFC, with the two primary ground referenced diodes of the diode bridge made synchronous?......that surely has gotta beat totem pole PFC on efficiency at 75-300W?
At some low power level, "Ye Olde" BCM boost PFC beats Totem pole on efficiency, where is that power level.....?
..And here we have it.....it says for 300W applications, Plain old BCM Boost PFC , and totem pole PFC, have the same losses..
https://www.monolithicpower.com/comparative-study-of-pfc-topologies-interleaved-boost-vs-totem-pole-pfc-topologiesThe below is surely a marketing gimmick?
They want to flog more GaN?