asrock70
Full Member level 4
I'm thinking about designing a laboratory resource.
Basic requirements
Output voltage 0-50V
Output current 0-25A
Output power 350W max
Precise voltage, current and power regulation
Possibility of serial and parallel merging more PS.
My first concept.
1.a stage 350W PFC PFS7528H
1.b 230 to 53V 7A LLC with LCS705HG 250kHz
1.c 230 to +-12V, +5V,+12V with TinySwitch-4 for for supplying the power source electronics
2. Synchronous Buck Controller 53 to 0-50V m,ax current 25A with LM5145
3. Maybe linear stage with NPN transistor for precise linear regulation .
All drive with high speed MCU any as STM32F3
What do you say about it, is it a good conception?
Ideal would be to skip the stage 2, but I do not know if 1b stage handled a voltage of 5 to 53V 7A with one transformer winding.
Basic requirements
Output voltage 0-50V
Output current 0-25A
Output power 350W max
Precise voltage, current and power regulation
Possibility of serial and parallel merging more PS.
My first concept.
1.a stage 350W PFC PFS7528H
1.b 230 to 53V 7A LLC with LCS705HG 250kHz
1.c 230 to +-12V, +5V,+12V with TinySwitch-4 for for supplying the power source electronics
2. Synchronous Buck Controller 53 to 0-50V m,ax current 25A with LM5145
3. Maybe linear stage with NPN transistor for precise linear regulation .
All drive with high speed MCU any as STM32F3
What do you say about it, is it a good conception?
Ideal would be to skip the stage 2, but I do not know if 1b stage handled a voltage of 5 to 53V 7A with one transformer winding.