Other Parts Discussed in Thread: LM51561, LM5156
Dear *,
we want to use LM51561 in two possible configurations with input power limit circuit ( using SS or other pin) and adjustable output voltage.
Configuration 1)
LM51561 in non-isolated BOOST
Vin 5V
Vout from 75V to 200V adjustable with external DAC on FB pin
Pin max 20W -> for Vout=200V -> Iout=0.1A, for Vout=100v -> Iout=0.2A...
q1a)
Please can you suggest the circuit for input power limitation?
Configuration 2)
LM51561 in isolated flyback ( PSR or optoc-oupler feedback regulation)
Vin from 37V to 57V
Vout from 75V to 200V adjustable with external DAC on FB pin
Pin max 20W -> for Vout=200V -> Iout=0.1A, for Vout=100v -> Iout=0.2A...
q2a)
Please can you suggest the circuit for input power limitation?
q2b)
Please can you suggest which topology is better for adjustable output voltage: primary side controlled flyback or flyback with opto-isolated FB?
q2c)
is it possible to create isolated flyback with variable output voltage? if not is there a isolated boost topology with variable output voltage?
Best Regards,
David.