-48 VDC Input. ETSI Compliant. NEBS Compliant. Convection-cooled. Covered Versions Available

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1 DCM Series Open Frame Telecom DCDC Converter 48 VDC Input ETSI Compliant NEBS Compliant Convectioncooled High Power Density in Small Package Sizes Covered Versions vailable The DCM family complements the ECM series, offering a featurerich power converter for DCinput applications. The ECM family has been widely adopted in U networking systems, to include switching, routing, system monitoring, and video production racks. Designers will now have the ability to integrate a power solution, adopted for normal mains operation or 48V telecoms input requirements. The input to the DCM series meets the stringent input regulations for connecting to telecoms networks as seen in ETS Features include abnormal voltage operation, reverse polarity, transient protection,surge limiting EMC limits to ETSI and NEBs standards.

2 Models and Ratings Output Voltage Output Current Model Min Max Convectioncooling Max 5CFM forcedcooling Number V S V DCM0048S Note: For fitted cover, add suffix C to model number (output power derates by 0% with cover fitted). Input Characteristics Input Voltage Operating VDC Can be configured as 48 VDC. See Fig. Input Current Min Load Input Current Full Load Input Reverse Voltage Protection Input Transient DCM DCM00 Undervoltage Lockout Protection 3 35 VDC Inrush Current Input Protection Continuous protection with automatic recovery ETSI EN300 3:003 Compliant 5 40 (48 VDC input) () 0 40 DCM00 (48 VDC input) () 3.5 () 5.00 DCM00 () Note:. ETSI EN 300 3:003 Compliant. Fuse fitted in +ve input line. See Fig. 0 &. Figure Typical inrush current characteristics Input Voltage Input Current Output Characteristics Output Voltage V VDC See Models and Ratings table Initial Set ccuracy ± % 48 VDC input at 50% load Output Voltage djustment ±0 % Via potentiometer Minimum Load 5 % Required to meet all specification parameters Start Up Delay.5 s See Fig. HoldUp Time 4 ms Drift ±0. %/şc Line Regulation ±0.5 % Of nominal with input variation 3675 VDC Load Regulation ± % 500% load of nominal input Transient Response V 4 % Over/Undershoot V % Recovery within % in less than 500 μs for a % load step Ripple & Noise % pkpk 0 MHz bandwidth 0. μf capacitor connected across measuring points. See Fig. 3 Overvoltage Protection 5 35 % Vnom DC, recycle input to reset Overload Protection % I nom See Fig. 4 Short Circuit Protection Continuous, trip & restart (hiccup) characteristic Temperature Coefficient 0.0 %/ C fter 0 mins warm up

3 Start Up Delay From DC Turn On Figure : Typical start up delay Input Voltage Input Current Ripple & Noise Figure 3: Typical ripple & noise Overcurrent Protection Figure 4 Typical Over Current Profile 4 0 Output V 8 6 Output enters Trip & Restart (hiccup mode) Output Load % 3

4 Xxxxxxxxxx General Specifications Efficiency 85 % Full load. See Fig. 5 Isolation: Input to Output 500 VDC Basic insulation Input to Ground 000 VDC Output to Ground 500 VDC Switching Frequency 70 khz Power Density Mean Time Between Failure: 740 Weight Notes. Compliant with MILHDBK7F, Notice +5 C GB W/in DCM00 khrs 0.33 (50) lb (g) 0.44 (00) DCM00. See note DCM00. See note Efficiency Vs Load Characteristics Figure 5: Typical efficiency 48 V input 86% 84% Efficiency % 8% 80% 78% 76% Environmental Operating Temperature Convectioncooled şc Derate linearly to 50% at 70 şc Forceair cooled şc Derate linearly to 75% at 70 şc Storage Temperature şc Cooling Convectioncooled See Thermal Considerations Forceair cooled 5 CFM See Thermal Considerations Operating Humidity 0 95 %RH Noncondensing. See page 5. note & 3 Storage Humidity 0 95 %RH Noncondensing. See page 5. note & 3 Operating ltitude 3000 m See page 5. note 3 Shock 3 x 30 g/ ms shocks in both +ve & ve directions along the 3 orthogonal axis, total 8 shocks. See page 5. note & 4 Vibration Single axis 0500 Hz at g x 0 sweeps. See page 5. note & 5 Safety gency pprovals 74% 0% 0% 0% 30% 40% 50% 60% 70% 80% 90% 00% Load % Safety gency Safety Standard Category CB Report CS # , IEC60950:00 Information Technology CS CS Certificate # CS. No Information Technology UL UL File # E3909 UL60950 (003) Information Technology TUV TUV Certificate # B EN60950/:004 Information Technology CE LVD 4

5 Electromagnetic Compatibility Immunity Phenomenon Standard Test Level Criteria Notes & Conditions EFT EN Surges EN Conducted EN Narrow & Wide Band Noise ETSI EN 300 3:003 Electromagnetic Compatibility Emissions Phenomenon Standard Test Level Criteria Notes & Conditions Class (6). See Fig. 6 EN550 Class B (48 VDC input) (6). See Fig. 7 &. Conducted Class DCM00 (6). See Fig. 8 EN550 Class B DCM00 (48 VDC input) (6). See Fig. 9 &. (6) Radiated EN550 Class Notes. Compliant with ETS May 99 + ammendment June 997 class 3... Compliant with ETS Feb 99 class., ETS Feb 99 class.. 3. Compliant with NEBS GR63Core issue Compliant with EN Compliant with EN Compliant with EN6043, ETSI EN , ETSI , NEBS GR089CORE issue 4 Typical EMC Plot Figure 6: US at full load with 48 VDC input Figure 7: US at full load with 48 VDC input Figure 8: DCM00 at full load with 48 VDC input Figure 9: DCM00 at full load with 48 VDC input 5

6 + xppower.com Xxxxxxxxxx Mechanical Details 0.5 (3.7) 4.00 (0.6) (95.5) CR.0 (30.5) In put Connector Pin Vin Pin +Vin mates with Molex housing & Molex series 594 crimp terminals.00 (50.8) 0.87 (.).750 (44.45) Q 0.5 (3.8) 0.0 (5.) GROUND CONNECTIONS THROUGH MOUNTING HOLES 4X ø 0.56 (3.96) MOUNTING HOLES ø0.3 (7.9) CLERNCE TOP ND BOTTOM C5 T C4 6 J.6 (4.0) 0. (5.4) 0.4 (3.5) SMD COMPONENT HEIGHT Output Connector J Pin Single +V +V 3 RTN 4 RTN 5 NC 6 NC J mates with Molex housing & Molex series 594 crimp terminals DCM (3.7) 4.50 (4.3) 4.5 (07.95).0 (30.5) In put Connector Pin Vin Pin +Vin.50 (63.5).9 (3.8) 0.5 (3.8).5 (57.5).0 (5.) 4X ø 0.56 (3.96) MOUNTING HOLES ø0.3 (7.9) CLERNCE TOP ND BOTTOM + C5 Q T CR C4 GROUND CONNECTIONS THROUGH MOUNTING HOLES J.0 (53.3) 0.0 (5.) 0.4 (3.5) SMD COMPONENT HEIGHT mates with Molex housing & Molex series 594 crimp terminals Output Connector J Pin Single +V +V 3 +V 4 +V 5 RTN 6 RTN 7 RTN 8 RTN 9 NC 0 NC NC NC J mates with Molex housing & Molex series 594 crimp terminals Notes. ll dimensions in inches (mm). Tolerance.xx = ±0.0 (0.50);.xxx = ±0.0 (0.5). Cover kits available separately, order part number no. ECM40/60 COVER (4.49 x.5 x.5 (4 x 64 x 38.5)) for or part no. ECM00 COVER (4.96 x 3.05 x.5 (6 x 77.5 x 38.5)) for DCM00. Output power derates by 0% with cover fitted. 6

7 xppower.com Thermal Considerations In order to ensure correct and reliable operation of the PSU in the most adverse conditions permitted in the enduse equipment, the temperature of the components listed in the table below must not be exceeded. See drawing on page 6 for component locations. Temperature should be monitored using K type thermocouples placed on the hottest part of the component (out of any direct air flow). Service Life Temperature Measurements (mbient 50 ºC) Component Max Temperature ºC DCM00 Max Temperature ºC T 00 şc 0 şc Q 05 şc 0 şc C4 80 şc 85 şc C5 85 şc 85 şc CR 0 şc 0 şc The estimated service life of the DCM is determined by the cooling arrangements and load conditions experienced in the end application. Due to the uncertain nature of the end application this estimated service life is based on the actual measured temperature of two key capacitors within the product when installed in the end application. The highest of the two component temperatures should be used. Estimated Service Life vs Component Temperature The graph below expresses the estimated lifetime for a given component temperature and assumes continuous operation at this temperature Lifetime (Hrs) C4 & 5 Temperature ( C) 55 Input Configuration The DCM input is floating and can be configured for use with either +48 VDC or 48VDC for telecom applications Figure 0: +48 VDC Configuration Figure : 48 VDC Configuration +48 V V June09