Can I put a pwm regulator on an Orion?

I have a 48v battery and I want to charge a 12v battery
To charge the battery, Orion smart is recommended.The idea is to use Orion 48/24 and at the output use a pwm regulator to charge a 12v battery

You could use an Orion 48/12

I understand that the normal Orions are not recommended for charging batteries.