Step down naponski regulator

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Pozdrav ekipa,
malo sam guglao, ali bih volio cuti vase prijedloge...

Znaci trebam sustiti DC napon sa 54 volta na 12. struja ne treba biti  
veca od 1 amper (i to je puno jer mi treba 0.2A)

LP

Re: Step down naponski regulator

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mozda tako nesto...
http://cds.linear.com/docs/en/datasheet/8027fc.pdf

pozdrav  




Re: Step down naponski regulator

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moglo bi i ovo zadovoljiti ako je vjerovati napisanim specifikacijama... ima  
regulaciju i napona i struje...
http://www.ebay.com/itm/LM2596-DC-DC-HV-S-60V-3A-Constant-Current-Voltage-CC-CV-Step-Down-Buck-Module-/141956616712?hash=item210d461208:g:mysAAOSwT4lWSXFI

to je najjeftinija varijanta koja moze prema specifikacijama izdrzati  
dugotrajno preko 50v ulazni napon...nije skupo pa ako mozes cekati naruci i  
probaj...

pozdrav  




Re: Step down naponski regulator
9.6.2016. u 10:11, Fastah je napisao/la:
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na "donjoj" diodi imati napon od 30V?

Re: Step down naponski regulator

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cemu to ako dc-dc konverter izdrzi ulazni napon od 57v a on ce dovesti 54v?
tako bi mogao staviti zener diodu od 12v za spustanje napona na 12v ali bi  
zenerica trebala biti vece snage da ne crkne...
ne vidim cemu komplicirati kad ovaj dc-dc konverter koji ima sve moguce  
zastite i podesavanja kosta 10kn kod kineza :-)

pozdrav




Re: Step down naponski regulator

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dvije diode po 30V spojene serijski nemaju svrhu u krugu 54V.
na ulazu ce i dalje biti 54V.

smps sa 230 na 12V galvanski odvojeno prije nego neki SD sa 54 na 12
pa kad nesto popusi onda sve ode u dim.

pozdrav   hrvoje  



Re: Step down naponski regulator
On 9.6.2016. 10:11, Fastah wrote:
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super ovo mi odgovara...

zahvaljujem

Re: Step down naponski regulator
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Heat-sink Needed

Jel se to odnosi na term.pastu?? Gdje ju staviti?  :)



Re: Step down naponski regulator
On 13.6.2016. 11:05, zeleni wrote:
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Evo ovako:
https://dl.dropboxusercontent.com/u/21387397/slike/2016-06-13%2011.47.19.jpg
f

Re: Step down naponski regulator
Fake LM2596HV Voltage Regulator Buck Converter Modules bought on eBay


https://www.youtube.com/watch?v=JLwJb4MVbls


Re: Step down naponski regulator
Khaderah wrote:
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da, na linku:
http://www.ti.com/lit/ds/symlink/lm2596.pdf
navode moguce faktore koji mogu dovesti do nestabilnosti....  



Re: Step down naponski regulator


http://www.ebay.com/itm/261942503087?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

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