pewdsbheem
Newbie level 3
I am trying to make a power supply. I have a 48V 3.5A output.
Load Regulation is very bad and some values are-
At no load, output voltage = 48V
At full load(3.5A), output voltage=32V.
I am attaching the FLYBUCK SMPS POWER SUPPLY CIRCUIT. Please suggest me some solutions to improve load regulation.
I have used LTV-817A, Transistor Output Optocouplers in my circuit to improve load regulation using feedback but I does'nt helps or improves it.
I have need %0.05 (2.5mV) regulation in all load cases from 0 A load to 3 A... how can I fix the problem. I increase the value of capacitors, and decrease ESR but it doesn't make any help, ripple decrease 70mV to 50mV.. When I decrease the output filter inductance by half value ripple decrease from 50 mV to 35mV..Is there any feasible solution?
Load Regulation is very bad and some values are-
At no load, output voltage = 48V
At full load(3.5A), output voltage=32V.
I am attaching the FLYBUCK SMPS POWER SUPPLY CIRCUIT. Please suggest me some solutions to improve load regulation.
I have used LTV-817A, Transistor Output Optocouplers in my circuit to improve load regulation using feedback but I does'nt helps or improves it.
I have need %0.05 (2.5mV) regulation in all load cases from 0 A load to 3 A... how can I fix the problem. I increase the value of capacitors, and decrease ESR but it doesn't make any help, ripple decrease 70mV to 50mV.. When I decrease the output filter inductance by half value ripple decrease from 50 mV to 35mV..Is there any feasible solution?