cui.com

date 04/28/2021

│ page 6 of 7

CUI Inc

│ SERIES: VOF-S25B │ DESCRIPTION: AC-DC POWER SUPPLY

INSTALLATION INSTRUCTIONS

The mounting holes should all be 1.5 mm in diameter. A minimum of 4 mm clearance is required for all four sides of the

unit and a minimum of 5 mm clearance is required above the top surface of the unit.

POWER BOOST

The VOF-S25B Series has an ordering option called Power Boost (“-PB” suffix), which can double the rated output power

provided to the load for a maximum of 10 seconds and repeated duty cycle of 10%. This functionality requires a 33

uF / 400 V capacitor to be connected between the BC+ and BC- pins as depicted in the schematic below. This external

capacitor is not required if the VOF-S25B is operating from 220 Vac mains. When utilizing the Power Boost Feature, care

must be taken not to thermally overstress the unit. The combined load (nominal plus peak) should not exceed 65% of the

full load rating when averaged out over time.

Additional Resources: Product Page | 3D Model | PCB Footprint