CUI has announced a range of open-frame ac-dc PSUs with a power-boost feature for motors.

“Since bodies in rest tend to stay in rest and require more force to get them moving, a large on-set of power is needed to get motors and pumps started,” according to CUI, whose power boost “provides twice the rated power for a maximum of 10 seconds. Doubling the rated current means these ac-dc products can support large transient loads, allowing you to design for nominal rather than peak power.”

Power boost is actually an option, on:

PSK-S25B encapsulated 25W nominal (2x boost)  (5V version is only 20W)  53 x 30 x 25mm

PSK-S60B encapsulated 60W nominal (2x boost)  (5V version is only 40W)  54 x 54 x 36mm

VOF-S25B open-frame 25W nominal (2x boost)  (5V version is only 20W)  51 x 28 x 25mm

VOF-S60B open-frame 60W nominal (2x boost)  (5V version is only 40W)  51 x 51 x 34mm

They are all single-output, with variants for: 5, 12, 15, 24, 36 or 48V.

PSK-S25B/S60B, VOF-/S25B/S60B comply with UL/EN/IEC 62368-1.

The PSK-S25B, VOF-S25B are additionally designed to meet the UL/EN/IEC 60335-1 household standard.

At the same time, the company announced similar parts without a boost option and other differences:

• PSK-S12B
• VOF-S12B
• VOF-S12C
• VOF-S25C
• VOF-S60C

Applications are expected in consumer, industrial and ITE.