No, not by specs, but you could try with a standard 802.3af injector (48V).
I have had success with the following setup: standard 802.3af switch (Netgrea FS728TP) => mAP2nD => Yealink T46G desktop phone.
could you please explain why should I need so powerful injector? e.g. I can power 2 mAP2ns, which POE-in supports 802.3af, from one RBPOE, but not mAP2n and Yealink 802.3af phone. according mAP2n specs its POE input voltage is standard for 802.3af - 12-57 V.
I tried to google it, but it's still confusing to me, why 802.3af POE-in of Mikrotik means it can be powered by passive POE-out of other Mikrotik, and 802.3af POE-in of other device means it can't be powered by passive POE-out.