Mozencrath
- Dec 15, 2011
- 13
- Joined
- Dec 15, 2011
- Messages
- 13
Hi all, I am in need of a DC-DC Power supply schematic that outputs between 12.7 and 14.5VDC and an input that could be anywhere from 12VDC up to 36VDC. The crutch is this-I need it to put out at around 80 amps. Realistically, the supply will be running 80% of the time under 20amps, but there are occassions where it will need to draw upwards of 60amps continuous.
I found this schematic (attached), but it looks like it is only about 50% efficient assuming a 24v in and 12v out. Am I correct on this or should it be higher?
Does anyone know of any simple circuits for a supply that will work for me, or know of one that I can simply modify to get the power output needed? Any thoughts would be appreciated. To give you an idea of my experience level, I was an EE major for 2 years but never completed my schooling.
I don't need anything fancy, and really am trying to keep it as simple as possible and get 80% efficiency or better. Is this possible with BJT transistors, or will I need to use a switching supply or MOSFET design?
Thanks !
this is a link to the schematic I referenced: http://www.zen22142.zen.co.uk/Circuits/Power/3730.htm
I found this schematic (attached), but it looks like it is only about 50% efficient assuming a 24v in and 12v out. Am I correct on this or should it be higher?
Does anyone know of any simple circuits for a supply that will work for me, or know of one that I can simply modify to get the power output needed? Any thoughts would be appreciated. To give you an idea of my experience level, I was an EE major for 2 years but never completed my schooling.
I don't need anything fancy, and really am trying to keep it as simple as possible and get 80% efficiency or better. Is this possible with BJT transistors, or will I need to use a switching supply or MOSFET design?
Thanks !
this is a link to the schematic I referenced: http://www.zen22142.zen.co.uk/Circuits/Power/3730.htm