DC-DC
212 Watts
DMA Series
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xppower.com
Open Frame Telecom DC-DC Converter
-48 VDC Input
ETSI Compliant
NEBS Compliant
5 V Standby & 12 V Fan Outputs
Remote On/Off & Power Good Signal
AC Input Version Available (EMA212)
Specification
Input
Input Voltage Range
Input Current
Input Reverse Voltage
Protection
Input Transient
Undervoltage Lockout
Protection
Fusing
• 48 VDC nominal (36 - 75 VDC).
Can be configured as -48 VDC input
• 5 A typical. 7 A max.
• Continuous protection with
automatic recovery
• Compliant with ETSI EN300 132:2003
• 32 - 35V DC
• 15 A F rated in -ve line
General
Efficiency
Isolation Voltage
• 88% typical
• 1500 VDC Input to Output (basic
insulation), 1000 VDC Input to Ground,
500 VDC Output to Ground.
• 60 kHz typical
• 11 W/In
3
• Combined input & DC OK - Open collector
referenced to output 0 V, transistor
normally off when input & output good.
Input fail provides
≥5
ms warning of loss
of output from input failure. DC OK
provides warning of DC output failure.
• 550 kHrs per MIL-HDBK-217F
Switching Frequency
Power Density
Signals
Output
• V1: 12 V, see table
• Not fitted
• 10% minimum load required on V1 to
meet all specification parameters of V2 &
V3.
Line Regulation
• V1:±0.5%, V2: ±5%, V3:±3% of nominal
with input variation of 36-75 VDC
Load Regulation
• V1:±1%, V2: ±5%, V3:±3% of nominal
with load variation 10-100%
Setpoint Accuracy
• V1:±1%, V2: ±5%, V3:±3% of nominal
with 48V DC input and 50% load
Turn-on Time
• 2 s typical from application of DC input
Transient Response
• <4% deviation with a 50-75-50% load
change at 1 A/µs. Output returns to within
1% in less than 500 µs
Ripple & Noise
• 1% max pk-pk 20MHz bandwidth
Overvoltage Protection
• V1:115-140% of nominal, recycle input
DC to reset
Overload Protection
• V1:110-125% of max current
Short Circuit Protection
• Continuous protection, trip and restart
(hiccup mode) characteristic
Temperature
• 0.02%/°C (after 20 minute warm up)
Coefficient
Output Voltage
Output Voltage Trim
Minimum Load
MTBF
Environmental
Operating Temperature
• 0 °C to +50 °C with full load, derate
linearly to 50% load at 70 °C with force
cooling 10CFM minimum
Cooling
• Forced cooled (see operating temperature)
Operating Humidity
• 0 to 95% RH non condensing.
(1,3)
Storage Temperature
• -40 °C to +80 °C.
(2,3)
Storage Humidity
• 0 to 95% RH non condensing.
(2,3)
Operating Altitude
• 3000m.
(3)
Shock
• ±3 shocks in each axis (total 18 shocks)
30g 11ms (half sine).
(1,4)
Vibration
• 2g, 10 - 500Hz 10 sweeps.
(1,5)
EMC & Safety
Emissions
• EN61204-3 2000, EN55022 class A
conducted & radiated, ETSI EN 300 132-2
2003, ETSI 300 386-1 1994, NEBS GR-
1089-CORE issue 4
• EN61000-4-4 level 1 Perf Criteria A, ETSI
300 386-1 1994
• EN61000-4-5 level 1 Perf Criteria A,
• EN61000-4-6 level 2 Perf Criteria A, ETSI
300 386-1 1994, NEBS GR-1089-Core
issue 4
• ETSI EN 300 132-2 2003
• EN60950-1:2006, CSA-C22.2 No. 60950-
1-03, CB Report IEC60950-1:2005,
CE Marked to LVD
EFT/Burst
Surge
Conducted Immunity
Notes
1. Compliant with ETS 300 019-1-3 May 1992 + ammendment 1 June 1997 class 3.1.
2. Compliant with ETS 300 019-1-1 Feb 1992 class 1.1, ETS 300 019-1-2 Feb 1992 class 2.2.
3. Compliant with NEBS GR-63-Core issue 3.
4. Compliant with EN60068-2-27.
5. Compliant with EN60068-2-6.
Narrow & Wide
Band Noise
Safety Approvals
DSP and ARM Processors
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