I said:
*Yes. Adjust input resistors to produce 2.18V on pin 3 of IC2a when panel
is at V_max_power.*
*Ensure ratings of D1 and Q1 are OK for Vin max O/C and ensure all
components on hot side (left) of Q1 never experience excessive voltages for
their rating.*

.... PLUS, ...

D2 needs to be suitable for Vin also.

They also increase the inductance of L1 with voltage (5/12 uH per Volt of
Vin) so a 60 V Vmp system is going to need ~=3D 25 uH.
Slightly different probably doesn't matter but their code may depend on Ton
being approximately constant. If you increase uH with voltage the effect
may be more or less transparent to the software.

 Russell
--=20
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