I am under quite some time pressure and I need to put together a document about how several DC/DC converters (preferably buck) with digital control compare to each other. I am pretty clueless, I have already pored over tons of datasheets, but I got little useful data, most of the converters out there have analog control. (Maybe I'm just so bad at finding anything on the web...) What I need is something like the UCD74106 from TI. It should have an external PWM input which can come from e.g. a microcontroller. The specs I am looking for are:
- V_in = 48 V
- V_out = 1.3 V to 24 V (programmable)
- single input/single output
- can be paralleled
- any power range
It would be nice to have datasheets with efficiency curves. Something like 'typical efficiency is blah-blah %' is not very helpful...
EDIT 2: I need the efficiency curves to see how the converter behaves at partial load. Also I am interested in finding the (approximative) load current at which the maximum efficiency is achieved (usually below rated current).
And yes, I need digital control! This has been explicitly stated in my assignment... The idea is to be able to reprogram the converters whenever necessary and to make them SMB/PMB capable.
I listed the datasheets to show, what I have found so far and to give an example of what I would like to have. Unfortunately 3 are not enough... I'd need a dozen or so.