Stability of Linear LED current regulator?

[ci139]

i guess coz R.DS.ON (in case we go switching) and the gate charge are low

 

[Mosaic]

For a commercial product doesn't the cost of the NFET matter? HV units cost more.

 

[ci139]

https://www.vicorpower.com/documents/whitepapers/fpa_ibm_white_paper.pdf (2006)
https://www.vicorpower.com/dc-dc/isolated-regulated/dcm

 

[Flyback]

Thanks, i really like Vicor, did a nice 48 to 1v5, 70A buck with them once, but they are way too pricey for my current employer.