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ELECTRICAL SPECIFICATIONS
Input
Input voltage range: 90 to 264 VAC or 127 to 350 VDC
Frequency: 47 to 63 Hz (360 to 400 Hz with higher leakage)
Inrush current: 50 Apk, cold start
Leakage current: <300 µA (using UL test method)
No load power: < 500 mW
Output
Output Voltage: 48V
Vout Adjust Range (-0% / +15%): 48-55.2V
Minimum Load: 0 A
Max. Continuous Load (Free Air): 8.3 A
Max. Peak Load (Free Air): 13.5 A
Max. Continuous Load (Forced Air): 13.5 A
Max. Peak Load (Forced Air): 15.6 A
Regulation: ±2%
Ripple (p-p): 480 mV
Maximum power: 650 W, forced-air cooling (750 W peak); 400 W, free-air natural convection cooling (650 W peak)
Adjustment range: -0% to +15%
Holdup time: 20 ms @ 400 W
Fan output: 12 V @ 1.0 A (forced air); 12 V @ 0.5 A (natural convection)
Standby output: 5 V @ 2.0 A (forced air); 5 V @ 1.0 A (natural convection)
Control and Protection
Serial bus interface: PMBus®
Current share: Active
Remote sense: 2-wire (+ and -)
Remote inhibit: Pull inhibit low = main & fan output OFF (5 V standby is ON); Pull inhibit high (or floating) = all outputs ON
AC OK: Active high when normal AC input is present (with internal 10 kOhm pull up to 3.3 V)
DC OK: Active high when main O/P is within regulation (with internal 10 kOhm pull up to 3.3 V)
Smart fan control: Monitor, control and override
Overvoltage protection: Latch (AC recyle or inhibit toggle required for PSU restart)
Overload protection: Auto-recovery (constant current mode down to 50% Vout)
Overtemperature protection: Auto-recovery with hysteresis
ENVIRONMENTAL SPECIFICATIONS
Operating temperature: -20 °C to +80 °C (derate at 50 °C), startup at -40 °C
Storage temperature: -40 °C to +85 °C
Operating humidity: 5% to 95% (non-condensing)
Non-operating humidity: 5% to 95% (non-condensing)
Maximum altitude: 5000 m (3000 m for medical), derating may apply
OTHER SPECIFICATIONS
Isolation: 4000 VAC (input to output); 1500 VAC (input to PE, output to PE)
Line harmonics: EN 61000-3-2, Class A
ESD immunity: EN 61000-4-2, ±15kV (air) / ±8kV (contact) - Criterion A
Conducted EMI Level B, CISPR 22 and FCC Part 15
Radiated EMI: Level B, CISPR 22 and FCC Part 15 (with cover)
Surge immunity: EN 61000-4-5, Level 3 - Criterion A, Level 4 - Criterion C
Medical EMC: EN 60601-1-2: 2014 (cover maybe required for some tests)
MTBF (Telcordia, Issue 3, Method 1, Case 3): > 950 KHrs, 25 °C, 410 W natural convection; > 1.3 MHrs, 25 °C, 650 W forced air
