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The VSBU-120-3.3 is a compact AC/DC converter from CUI Inc. designed for industrial applications. It accepts a wide input voltage range of 90-260 Vac at frequencies from 47 to 63 Hz. The converter delivers an adjustable output voltage from 3 to 5 Vdc with a maximum output current of 22 A and total output power of 73 W.
Key electrical specifications include a typical efficiency of 80%, ripple and noise limited to 66 mVp-p maximum, and power factor correction ranging from 0.95 to 0.97. Line regulation is within 1%, load regulation within 5%, and the temperature coefficient is -0.04 to 0.04 %/°C. The transient response time from full load to half load at 100 Vac is 4 ms typical.
The converter features inrush current of 37 A at 115 Vac and 75 A at 230 Vac (cold start). Input current is 1.7 A at 115 Vac full load and 1.0 A at 230 Vac full load.
90-260 Vac.
3-5 Vdc.
22 A.
73 W.
80%.
66 mVp-p maximum.
1% max.