160 w dc to dc convertor, circuit with CC/CV mode

[anan1975]

dear all,
I want to make dc to dc convertor . can anyone suggest a circuit with CC/CV mode with short circuit protection

I/P 80 V dc. O/P 10-48 V and current 0.5 to 4 amp controllable by POT.

Regards
Anand

 

[karesz]

160 w dc to dc convertor

Hi,
Lot of good appl. notes i.e. from w*w.power-int.com/en/design-support/pi-expert-design-software, design Sw is free downloadable...
ST has similar semiconductor sortiment.
K.

 

[neddie]

Re: 160 w dc to dc convertor help needed

Does it need to be isolated. Can be important in choosing a topology.
If isolation is needed , I'd suggest a flyback type of supply , although the power level
is getting towards the high end for flybacks.

 

[karesz]

160 w dc to dc convertor help needed

Ofcourse;
but check simple some Apll Notes on the w*w.power-int.com home side(as I proposed)_I think, that you will have a problem to select between possibilities + with the designer SW you have your own, i.e. flayback, special solution too
K.

 

[anan1975]

Re: 160 w dc to dc convertor help needed

hi,
dear all
i could not fit any device from pi
in my application primary current is more hence no pi or no flyback topology is going to fit i think so.
isolation is required.
Please suggest next.
Anand

 

[neddie]

Re: 160 w dc to dc convertor help needed

Check out the UC3842. It's old now , but is still a good chip. There are lots of app notes as well. Even if you don't use this exact chip , the circuits are applicable to lots of controllers.At 320W I doubt you are going to find a integrated controller chip.You are going to need to have some external switching transisdort(FET's).A "simple" push-pull type of convertor is probably ok for this sort of power level. the lm3524/uc3846 also come to mind. Be prepaired for a bit of experimenting , these things can be tricky :0)

 

[karesz]

160 w dc to dc convertor help needed

HI,
You can check at PI for "epr31.pdf"; its a TOP-Switch (TOP249Y)circuit for AC 110V & multi outputs, but has 180W capability
Next one: "rdr189.pdf"; 225W, HiperPLC with PLC810PG.
Than; rdr203.pdf, it has PeakSwitch PKS607YN, generates +/-28V for audio amps, 50W DC & 200W peak power...
I believe you has a simple switcher to select_some TOP-Switch i.e._for 30-55V & a poetregulator with current & voltage controlled output for your 10-48V/0.5-4.0A.
You can minimum 2 of these PI descriptionsadapt for the input switcher & put extra circuits to that for the adjustables...
Its not very simple, but has good eficiency % the components are up to date.
Anyway, possible you has a solution i.e. from ST too?
I would search on radio amateurs & solar sites, they has often very similar problems as yours...
K.

 

[ehjey]

Re: 160 w dc to dc convertor help needed

Hello,
You can look for lots of application notes in TI website (as what was one of the suggestions in the email thread). I believe most semiconductor companies that manufacture power mosfets have similar application notes as reference. Good luck.