It is always helpful in such cases to mention the respective requirements first, so that one's own, usually already filtered view is avoided. :smiling_face_with_smiling_eyes:
In fact, higher voltages than 5V do not play nearly the role nowadays as they did in the last century, so that consequently the interest of manufacturers to offer such special components is also low. With a dual buck, there is also the problem that with changing load conditions, oscillations can occur that can reach the audible range and cause at least massive EMI. To avoid this, the switching frequency of the two buck controllers is typically synchronised.
Much more flexible in terms of load possibilities is the realisation of such dual buck with two separate controllers, whereby at least one should be a device with SYNC input, which is then synchronised by the other.
If you extend the aforementioned filter settings by Other Features > SYNCHRONIZATION, you get four asynchronous converters (i.e. with free-wheeling diode, as found at the beginning of the Wikipedia article on buck converters).
The L7985 should fit well, because you can connect the SYNC pin of two such controllers directly, so that the one with the higher switching frequency synchronises the other to the same frequency. This has the additional advantage that a phase shift of 180° is achieved without further external hardware, which significantly reduces the current ripple on the input side.
Regards
/Peter
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