First of all, I want to make it sure if ADP1621 can drive buck configuration because it is stated in the datasheet of ADP1621 that it can be used for SEPIC, flyback, boost, buck-boost, forward and "other converter topologies".
Second, I am…
The ADP1621 boost controller can be used as you describe for an asynchronous design (one switch, one diode) with or without isolation.
The ADP1828 buck controller can be used as a 2 low side switch flyback if you do not need isolation.
instead of designing 2 power conversion stages (a buck and a boost) you could design a single stage SEPIC converter that can handle 6V to 30V.
You would supply this with diode ORing at the input instead of the output.
The ADP1621 could be used…
Unfortunately we don't have a spice model for both parts. What we have though is a SIMPLIS model for ADP1621 that would work using ADIsimPE. The simulator can be downloaded on the link below.
石家庄 昌盛大街 电源 ADP1621 ADP1051
Have a look at the ADP1621in the SEPIC configuration or the ADP1614 in the SEPIC configuration. Also, if your were not aware, we have this fantastic design tool called ADIsimPower. It is really simple to use, and they are excel based. See the links…
I using "ADIsimPower/ADP1621_BoostDesigner" to verify my request. this result tell me to refer. P/N#:"ADP1621-BL2-EVZ" EVB Board design. But ADI's website does not provide this information downloaded. Can you provide…