We have a two years old 4 port LTPoE++ (LTC4290A, first four ports) design based on the DC1843B demonstration kit.
Is it possible to modify this existing hardware (e.g.: by simply changing the LTC4290A to a LTC4292) to get a fully IEEE 802.3bt (PoE++) Type 4 (~100 W) compliant equipment? Or is it only possible with a full redesign of the product?
Thank you very much for any help in advance.