A 7 to 60 V Input Buck Converter: A Wide-Range DC-DC Step-Down Module

This compact buck converter module accepts input voltages from 7 V to 60 V DC and steps them down to either 5.0 or 3.3 V. The output voltage is selectable via a jumper.

The heart of the design is the ROHM BD9G500UEFJ-LA, an 8-pin SMD buck converter IC with an integrated high-side power MOSFET featuring low on-resistance. The device operates in current-mode control and can supply continuous output currents up to 5 A, with a nominal rating of 2 A for typical use.