20 Watts xppower.com RDC Series 72 & 110 VDC Input for Railway Applications Single and Dual Outputs 1500 VAC Basic Isolation High Efficiency - Up to 88% Remote On/Off Complies with EN50155 EN50121-3-2 EMC for Railway Applications 3 Year Warranty Specification Input General Input Voltage Range 72 V (36-140 VDC), 110 V (55-176 VDC) Efficiency See table Input Current See table Isolation Voltage 1500 VAC Input to Output Input Reflected Ripple 20 mA pk-pk through 12 H inductor 1600 VDC Input to Case Input Filter Pi network 1600 VDC Output to Case Undervoltage Lockout 72 V models: ON 33.5 V, OFF 30.5 V typ. Isolation Capacitance 2000 pF 110 V models: ON 52.5 V, OFF 48.5 V typ. Switching Frequency 270 kHz typical Input Surge 72 V models 150 VDC for 100 ms 3 Power Density 25 W/in 110 V models 185 VDC for 100 ms MTBF 400 kHrs min to MIL-HDBK-217F at 25 C, GB Output Output Voltage See table Environmental Output Voltage Trim 10% on single outputs models only Minimum Load No minimum load required Operating Temperature -40 C to +85 C (see derating curve) Line Regulation 0.2% max Case Temperature +105 C max Load Regulation Single output models: 0.5% max, Cooling Convection-cooled Dual output models: 1% max balanced Operating Humidity 5-95% RH, non-condensing outputs Storage Temperature -40 C to +125 C Cross Regulation 5% (see note 2) Setpoint Accuracy 1% Start Up Time 30 ms typical EMC Ripple & Noise 100 mV or 1% pk-pk for single output General Complies with EN50121-3-2, Railway models, 150 mV or 1% pk-pk for dual Applications - Electromagnetic output model, whichever is greater, Compatibility for Rolling Stock Apparatus 20 MHz bandwidth (see note 3) Complies with EN50155 Transient Response 4% max deviation, recovery to within Emissions EN55011, 79 dBV (0.15-0.5 MHz) 73 dBV (0.5-30 MHz) 1% in <500 s for a 25% load change Temp. Coefficient 0.02%/C ESD Immunity EN61000-4-2, level 3, Perf Criteria A Overvoltage Protection 3.3 V models: 3.9 V typical, 5 V models: 6.2 Radiated Immunity EN61000-4-3 20 V/m Perf Criteria A* V typical, 12 V models: 15 V typical EFT/Burst EN61000-4-4 level 3, Perf Criteria A* 15 V models: 18 V typical, 5 V models: Surge EN61000-4-5 level 2, Perf Criteria A 6.2 V typical, 12 V models: 15 V typical 15 V models: 18 V typical Conducted Immunity EN61000-4-6 10 V/rms, Perf Criteria A Overload Protection >150% of full load Magnetic Field EN61000-4-8 10 A/m, Perf Criteria A Short Circuit Protection Trip & restart (hiccup mode), auto recovery Safety Approvals EN62368-1, CE (Meets all applicable Overtemperature 115 C typical directives), UKCA (Meets all applicable Protection legislation) Remote On/Off On = Logic High (>3.0) or Open Off = Logic Low (<1.2 V) or short pin 2 to 3 *External input capacitor required 220 F/250 V Maximum Capacitive See table Load DC-DCDC-DC RDC20 Models and Ratings (1) Input Current Maximum (4) Input Voltage Output Voltage Output Current Efficiency Model Number Capacitive Load No Load Full Load 3.3 V 6.00 A 20 mA 312 mA 10000 F 88.0% RDC2072S3V3 5.0 V 4.00 A 25 mA 313 mA 6800 F 88.5% RDC2072S05 12.0 V 1.65 A 15 mA 318 mA 1000 F 86.5% RDC2072S12 36-140 VDC 15.0 V 1.33 A 20 mA 318 mA 700 F 87.0% RDC2072S15 5.0 V 2.00 A 35 mA 319 mA 1000 F 87.0% RDC2072D05 12.0 V 0.83 A 20 mA 323 mA 470 F 85.5% RDC2072D12 15.0 V 0.67 A 20 mA 324 mA 330 F 86.0% RDC2072D15 3.3 V 6.00 A 15 mA 208 mA 10000 F 86.5% RDC20110S3V3 5.0 V 4.00 A 20 mA 209 mA 6800 F 87.0% RDC20110S05 12.0 V 1.65 A 15 mA 212 mA 1000 F 85.0% RDC20110S12 55-176 VDC 15.0 V 1.33 A 15 mA 211 mA 700 F 86.0% RDC20110S15 5.0 V 2.00 A 30 mA 211 mA 1000 F 86.0% RDC20110D05 12.0 V 0.83 A 15 mA 215 mA 470 F 84.0% RDC20110D12 15.0 V 0.67 A 15 mA 215 mA 330 F 85.0% RDC20110D15 Notes 1. Input current specified at nominal 72 V or 110 V input. 3. Measured with 1 F ceramic capacitor in parallel with 10 F electrolytic 2. Cross regulation for duals is 5% when one output is at 100% and the other is capacitor across output rails. varied between 25% and 100%. 4. Add suffix -HK for optional heatsink. Mechanical Details 0.10 0.40 0.40 0.10 0.40 Optional (2.54) (10.16) (10.16) (2.54) (10.16) Heatsink PIN CONNECTIONS 0.10 Pin Single Dual (2.54) 4 5 6 1 +Vin +Vin 2 -Vin -Vin 0.10 0.02 3 Remote On/Off Remote On/Off (2.54) (0.50) 4 +Vout +Vout DIA 5 -Vout Com 0.04 Bottom View 1.73 2.00 (1.00) 6 Trim -Vout (43.9) (50.8) DIA Single & Dual 0.04 Output Models (1.00) Notes 1. All dimensions are in inches (mm). 0.17 2. Weight: 0.07 lbs (30 g) approx (4.36) 3. Pin diameter: 0.04 0.002 (1.0 0.05) 1 0.32 2 3 4. Pin pitch tolerance: 0.014 (0.35) (8.00) 5. Case tolerance: 0.02 (0.5) 0.20 0.24 0.64 0.30 0.30 (5.08) (6.00) (16.3) (7.62) (7.62) Application Notes Derating Curve External Output Trim On single output versions only. 100 6 6 90 Output can be externally trimmed using this method. 80 R trim-up R trim-down Contact sales for details. 70 5 4 60 without heat-sink 50 with heat-sink 40 Typical Resistor S3V3 S05 S12 S15 30 Trim Down 10% 15.3 k 5.31 k 5.3 k 5.8 k 20 Trim Up 10% 10.3 k 10.6 k 22.1 k 20.0 k 10 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 Ambient Temperature (C) 28 Oct 2021 Load (%)