I don't understand the viper12adip

[kinarfi]

I'm probably trying to use it wrong. The data sheet didn't make sense to me, but I'm not using it with AC power either, I'm trying to use it as DC to DC 48 to 12. Will it do it? How do I hook it up?
1&2 are source, 3 is Feed Back, 4 is VDD, 5,6,7&8 are Drain
View attachment 61959
Is Vdd just for power to run it with?, feed back is .23v, source is grounded, Drain switches source to ????
Thanks,
Kinarfi

 

[cowboybob]

Judging from the schematic below (from the datasheet):

View attachment 61970

I'd say yes, but that's a qualified yes.

Is Vdd just for power to run it with?

Yes and no, As you can see, VDD, (wherever it comes from) also supplies the power for the actual charging circuit in this schematic.

But is does appear to be a bucking (as well as, possibly, a boosting) device.

Th FB input would have to be controlled by some manner fixed of biasing (for a steady load) or an arrangement as depicted for a varying load.

I think I'm right here.