400 Watts
xppower.com
SMM Series
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Industrial, IT & Medical Approvals
Low Profile for 1U Applications
Optional Current Share & AC Fail
Output Voltages from 3.3 V to 54 V
Enclosed with Internal Fan & U-Channel Versions
Class B Conducted Emissions
Optional Molex Connectors
Specification
Input
General
Input Voltage
Input Frequency
Input Current
Inrush Current
• 90-264 VAC (120-370 VDC)
Efficiency
• 3.3 & 5.0 V single output: 70ꢀ min,
All other single output: 80ꢀ min, Dual
outputs: 75ꢀ min at 230 VAC, full load
• 47-63 Hz
• 6.35 A at 90 VAC, full load
Isolation
• 4000 VAC Input to Output, 1500 VAC Input
to Ground, 250 VDC Output to Ground
• 35 A peak max (cold start at 240 VAC
& full load)
Switching Frequency
• 25 kHz for PWM stage,
60 kHz for PFC stage
• 6.25 W/In3 based on unit without cover/fan
Power Factor
• Meets EN61000-3-2
Earth Leakage Current • <300 µA max at 264 VAC/60 Hz
Power Density
Signals
UVLO
• Shut down when 75 VAC <Vin <85 VAC
& turns on when Vin >86 VAC
• Current Share, Power Good, Current
Monitor & optional AC Fail (see note 5 -
available on single output models onlꢂ)
Input Protection
• Internal 8 A fuse in line and neutral
MTBF
• 140 kHrs at +25 °C per MIL-HDBK-217F
Output
Output Voltage
Output Voltage Trim
Initial Set Accuracy
Minimum Load
Start Up Delay
• 3.3 to 54 VDC - see tables
Environmental
•
5ꢀ on V1, adꢁustable bꢂ user
Operating Temperature • -0 °C to +70 °C, derate linearlꢂ from
• Within 1ꢀ of stated output voltage
• Single output: 1ꢀ, Dual output (V1): 10ꢀ
• 2 s max at 120 VAC
+50 °C to+ 70 °C at 2.5ꢀ/°C
Cooling
• Minimum 23 CFM airflow required for
maximum power output. ‘-C’ version has
built-in fan, others require 23 CFM air flow
to meet fan-cooled ratings
Hold Up Time
• 20 ms min at 80ꢀ full load
• 0.5ꢀ
Line Regulation
Load Regulation
Operating Humidity
Storage Temperature
Vibration
• 5-90ꢀ RH, non-condensing
• -20 °C to +85 °C
•
1ꢀ (single outputs),
3ꢀ V1, 7ꢀ V2 (dual outputs)
• 5-50 Hz, acceleration 2 g, 3 minute
sweep, 60 mins in 3 axes
Over/Undershoot
• Not to exceed 5ꢀ of nominal voltage
Transient Response
• 5ꢀ max deviation, recoverꢂ to within 1ꢀ
in 500 µs for a 50ꢀ load change
Shock
• 15 g 11 ms 1/2 sine wave, 3 times in 6
axes
Ripple & Noise
• <1ꢀ of nominal output voltage
Bump
• 15 g 6 ms 1/2 sine 4000 bumps in 3 axes
Overvoltage Protection • >130ꢀ Vnom, recꢂcle input to reset
Overtemperature
Protection
• Shuts down at +85 °C, measured internallꢂ
with auto recoverꢂ
EMC & Safety
Emissions
• EN55011/22 Level B conducted & radiated
• EN61000-3-2
Overload Protection
• 110-140ꢀ
Harmonic Currents
ESD Immunity
Radiated Immunity
EFT/Burst
Short Circuit Protection • Constant current, auto recoverꢂ
• EN61000-4-2, level 3 Perf Criteria A
• EN61000-4-3, 3 V/m Perf Criteria A
• EN61000-4-4, level 2 Perf Criteria A
• EN61000-4-5, level 3 Perf Criteria A
• EN61000-4-6, 3 V, Perf Criteria A
Remote Sense
• Compensates for up to 0.5 V drop
(not available with current share)
Remote On/Off
Current Share
Fan Drive
• On = TTL Logic High or Open
Off = TTL Logic Low or Short
Surge
Conducted Immunity
Dips & Interruptions
• Option ‘-I’ available on single output
models onlꢂ - see note 4
T
• EN61000-4-11 70ꢀ U for 10 ms,
T
T
40ꢀ U for 100 ms, <5ꢀ U for 5000 ms
Perf Crit A, B, B (Perf Crit A, A, B with
85ꢀ load)
• 12 V at 500 mA
Safety Approvals
• UL60601-1, EN60601-1, EN60950-1:2001,
UL60950, CSA C22.2 No. 60950-1-03,
CSA C22.2 No. 601.1-M90
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