berger.h
Member level 5
I need PS, max output power 150W min output power 2W
Input voltage 95-265 AC first stage is active PFC
Output 24V and 48V
I choice among these topologies and switching freq.
1.Two-switch forward with 66kHz
2.Two-switch forward with 132kHz
3. Half Bridge Resonant LLC with 250kHz
Between 1 and 2, an equally large transformer for both frequencies emerges surprisingly, and because of the lower switching losses, the option 1 better
3 looks interesting, especially with the resonant coil in the transformer, but I am afraid of behavior with minimal load
What topology do you recommend?
Input voltage 95-265 AC first stage is active PFC
Output 24V and 48V
I choice among these topologies and switching freq.
1.Two-switch forward with 66kHz
2.Two-switch forward with 132kHz
3. Half Bridge Resonant LLC with 250kHz
Between 1 and 2, an equally large transformer for both frequencies emerges surprisingly, and because of the lower switching losses, the option 1 better
3 looks interesting, especially with the resonant coil in the transformer, but I am afraid of behavior with minimal load
What topology do you recommend?