Additional Resources: Product Page 3D Model date 04/21/2021 page 1 of 5 SERIES: VF-S320-XXA-CFS DESCRIPTION: AC-DC POWER SUPPLY FEATURES up to 320 W continuous power 700 W peak power within 500 s duty duration metal top cover and side fan passive power factor correction power good signal 3,000 Vac isolation voltage over load, over voltage, over temperature, and short circuit protections UL/EN/IEC 62368 certified efficiency up to 83% RoHS 1 output output output ripple and efficiency MODEL 2,3 voltage current power noise max max max typ (Vdc) (A) (W) (mVp-p) (%) VF-S320-05A-CFS 5 45 225 50 75% VF-S320-09A-CFS 9 29.1 262 90 83% VF-S320-12A-CFS 12 26.67 320 120 80% VF-S320-15A-CFS 15 21.33 320 150 83% VF-S320-18A-CFS 18 17.78 320 180 83% VF-S320-24A-CFS 24 13.33 320 240 83% VF-S320-28A-CFS 28 11.43 320 280 83% VF-S320-36A-CFS 36 8.89 320 360 83% VF-S320-48A-CFS 48 6.67 320 480 83% VF-S320-54A-CFS 54 5.93 320 540 83% Notes: 1. 1% minimum load is required to maintain the ripple and regulation. 2. Ripple and noise is measured from 10 KHz to 20 MHz at output terminals with a 0.1 F ceramic capacitor and a 22 F electrolytic capacitor in parallel. PART NUMBER KEY VF - S320 - XX A - CFS - X Base Number Output Voltage Input/Output connector: blank = Terminal block input / Terminal block output 1 = Molex input / Molex output 2 = Molex input / Terminal block output 3 = Terminal block input / Molex output cui.comAdditional Resources: Product Page 3D Model CUI Inc SERIES: VF-S320-XXA-CFS DESCRIPTION: AC-DC POWER SUPPLY date 04/21/2021 page 2 of 5 INPUT parameter conditions/description min typ max units voltage 90-132/180-264 auto selectable 90/180 132/264 Vac frequency 47 63 Hz at 100~120 Vac, cold start 8 A current at 200~240 Vac, cold start 4 A at 115 Vac, full load, cold start 35 A inrush current at 230 Vac, full load, cold start 70 A power factor compliant to EN 61000-3-2 class A OUTPUT parameter conditions/description min typ max units line regulation low line to high line 1 % load regulation all other outputs 1 % temperature coefficient 0.25 mV/C Output voltage returns to within 1% in less than 2.5 ms for a 50% load change. transient response Peak transient does not exceed 5%. start-up time at 120 Vac 1 s rise time 0.2 20 ms hold-up time at 120 Vac and 80% of rated maximim load 20 ms adjustability 5 % Designated as PG on the CN1. power good This signal goes high 100-500 mS after the output reaches regulation. It goes low at least 1 mS before loss of regulation. fan drive 12 Vdc / 300 mA for external fan PROTECTIONS parameter conditions/description min typ max units over voltage protection AC input needs to be reset to restart the power supply. 130 % over current protection automatically recovers 110 140 % short circuit protection short circuit can be continuous, recovers automatically upon removal of short over temperature protection auto recovery 85 C SAFETY & COMPLIANCE parameter conditions/description min typ max units applied for 3 seconds at 10 mA max. primary to secondary 3,000 Vac isolation voltage primary to transformer core 1,500 Vac primary to earth chassis 1,500 Vac safety approvals certified to 62368: IEC, EN, UL EMI/EMC pass FCC Part 15, CISPR 22 class B, conducted at 240 Vac 500 A leakage current at 120 Vac 300 A RoHS compliant yes MTBF according to MIL-HDBK-217 at 30 C 100,000 hrs cui.com