hi, im new here. i'm doing some research in SMPS and learning about them, and a came to a problem that i need help.
i got a few 200W SMPS from a few places over the web for personal projects, and one of them got 93% efficiency at 220v. great. other one got 70%. other one 75%.
as my initial goal was a high-efficiency to avoid the need for cooling, i was digging into the SMPS that i got to see exactly what make some of them so low efficient and others "so good". and "bingo", good one i have is the only that have active PFC.
so, my question: how is the "range" of efficiency on non-active PFC SMPS? cause i was looking at PC power supplies, and the cheap ones with no PFC got around 65~75% efficiency, and the good ones, all have active PFC (80~95% efficiency)
thanks in advance.
i got a few 200W SMPS from a few places over the web for personal projects, and one of them got 93% efficiency at 220v. great. other one got 70%. other one 75%.
as my initial goal was a high-efficiency to avoid the need for cooling, i was digging into the SMPS that i got to see exactly what make some of them so low efficient and others "so good". and "bingo", good one i have is the only that have active PFC.
so, my question: how is the "range" of efficiency on non-active PFC SMPS? cause i was looking at PC power supplies, and the cheap ones with no PFC got around 65~75% efficiency, and the good ones, all have active PFC (80~95% efficiency)
thanks in advance.