causalitist
New Member
is there a way i can put say 3 Linear voltage regulators in series to step down about 3 times the Vin rating of one?
can i do this with a little to-220 switching regulator like
LM2575HV ? (really cool product line i didnt know about!)
say i have 110vdc . and want 15vdc.. could i put 3 40v LDO in series? (that each give Vo =5v or Vo=15v)
i know there are LDO's that can take 125vin .. but im curious if i could series 3 rated at lower volts.. wouldnt do it because of heat, but ive been wondering..
and then also, same 110v to 15v : can i put 2 or 3 LM2575HV switching reg in series?
i need like 150ma... but this is more about if i can do it, as opposed to me asking you to give me a schematic solving all my lifes problems hahaa
crap you dont have to read:
(im looking for a 1st stage in stepping down my 110vdc power rail volts in my 50amp 110v IGBT pwm motor drive, for a bicycle. 110v is lithium polymers. after i can get the volts to around 16-20v, then i will clean/regulate/isolate... and "drive the crap outa that igbt!! wooo!" ... sorry.. hahaa)(yes, ive considered a good isolated dc-dc for the whole sha-bang, but trying to save cost and see if i can get it lower cheaper and use a 15v to +15v, -10v dc-dc)
∫d≈ζ
yes... u heard me! (integral of confusion) d(anger) kinda equals dampening factor
can i do this with a little to-220 switching regulator like
LM2575HV ? (really cool product line i didnt know about!)
say i have 110vdc . and want 15vdc.. could i put 3 40v LDO in series? (that each give Vo =5v or Vo=15v)
i know there are LDO's that can take 125vin .. but im curious if i could series 3 rated at lower volts.. wouldnt do it because of heat, but ive been wondering..
and then also, same 110v to 15v : can i put 2 or 3 LM2575HV switching reg in series?
i need like 150ma... but this is more about if i can do it, as opposed to me asking you to give me a schematic solving all my lifes problems hahaa
crap you dont have to read:
(im looking for a 1st stage in stepping down my 110vdc power rail volts in my 50amp 110v IGBT pwm motor drive, for a bicycle. 110v is lithium polymers. after i can get the volts to around 16-20v, then i will clean/regulate/isolate... and "drive the crap outa that igbt!! wooo!" ... sorry.. hahaa)(yes, ive considered a good isolated dc-dc for the whole sha-bang, but trying to save cost and see if i can get it lower cheaper and use a 15v to +15v, -10v dc-dc)
∫d≈ζ
yes... u heard me! (integral of confusion) d(anger) kinda equals dampening factor