DC-DC Converter XPPower RDF25 Series 25 Watts Regulated Single Output xxx Series Covers all nominal inputs from 24 to 110 VDC for Railway Applications Wide 10:1 Input Range 3000 VDC Isolation High Efficiency EN50155 Certified for Railway Applications EN50121-3-2 with External Components Remote On/Off Output Voltage Trim 10% Dimensions: Operating Temperature -40 C to +100 C RDF25: Full Power to +55 C 2.0 x 1.0 x 0.45 (50.8 x 25.4 x 11.5 mm) 3 Year Warranty The RDF25 series provides an exceptional 10:1 input voltage of 16-160V DC covering all requirements of the railway standard EN50155. The product features a robust design tested to railway standards and includes a remote on /off function, output voltage trimming, protection against short circuit, undervoltage lockout, overtemperature, overload and overvoltage. Models & Ratings (1) Input current Maximum Input voltage Output voltage Output current Efficiency Model number No load Full load capacitive load 5.0 V 5000 mA 413.36 mA 6800 F 85% RDF2572S05 12.0 V 2080 mA 412.70 mA 1000 F 84% RDF2572S12 16-160 VDC 10 mA 15.0 V 1670 mA 409.31 mA 820 F 85% RDF2572S15 24.0 V 1040 mA 407.84 mA 470 F 85% RDF2572S24 Notes 1. Input current measured at nominal input voltage. 2. For heatsink add suffix -HK, e.g. RDF2572S15-HK Mechanical Details Optional Heatsink (-HK) 0.40 0.40 0.10 0.10 (10.16) (10.16) 0.69 (2.54) (2.54) 0.45 1.00 (17.6) (11.5) (25.4) Pin Connections 0.10 0.10 (2.54) 0.02 Pin Function (2.54) (0.5) 1 +Vin DIA 2 -Vin 2.00 2.00 1.73 Top View 0.04 Bottom View 3 Control (50.8) (43.9) (50.8) DIA (1.0) 0.04 4 +Vout (1.0) 5 -Vout 0.17 6 Trim (4.36) 0.32 Notes (8.00) 1. All dimensions are in inches (mm) 1.00 0.20 (25.4) 0.30 (5.0) 0.30 0.24 (7.62) (7.62) (6.0) Heatsink Thermal Pad www.xppower.com 1DC-DC Converter XPPower RDF25 Series Input Characteristic Minimum Typical Maximum Units Notes & Conditions Input Voltage Range 16 160 VDC 24 V, 37.5 V, 48 V, 72 V, 96 V & 110 V nominal inputs Input Filter Internal Pi type Input Voltage Surge 176 VDC for 100 ms Undervoltage Lockout OFF at 12 V, ON at 13.8 V ON at 3.0 VDC to 12.0 VDC or open circuit Positive logic reference to -Vin (pin 2) Remote On/Off (Positive Logic) OFF at 0 VDC to 1.2 VDC or short pin 2 to pin 3 Standby Mode 3 mA When module inhibited Output Characteristic Minimum Typical Maximum Units Notes & Conditions Output Voltage 5 24 VDC See Models and Ratings table Output Trim 10 % Initial Set Accuracy 1.0 % At full load Minimum Load A No minimum load required Line Regulation 0.2 % From minimum to maximum input at full load Load Regulation 0.5 % From 0 to full load Recovery within 1% in less than 500 s for a 25% load Transient Response 4 % deviation change. Ripple & Noise 100 mV pk-pk 20 MHz bandwidth. Measured using external 10 F MLCC Overvoltage Protection 120 % Zener diode clamp Overload Protection 150 % Short Circuit Protection Continuous trip & restart (hiccup mode), with auto recovery Maximum Capacitive Load See Models and Ratings table Temperature Coefficient 0.02 %/ C General Characteristic Minimum Typical Maximum Units Notes & Conditions Efficiency 85 % See Models and Ratings table Isolation: Input to Output 3000 VDC 60 s basic isolation 9 Isolation Resistance 10 At 3 kVDC Isolation Capacitance 2000 pF Switching Frequency 250 kHz 3 Power Density 28 W/in Mean Time Between Failure 230 khrs MIL-HDBK-217F, +25 C GB Case Material Copper case with non-conductive plastic base, UL94V-0 rated Potting Material Epoxy UL94V-0 Fire Protection Designed to meet EN45545-2 PCB Pin Material Tinned copper 1.0 mm brass, solder coated Lead Free Reflow Solder Process IPC JEDEC J-STD 020D.1. 260 C max. 1.5 mm from case. 10 s max. 0.079 (36.0) Standard Weight lb (g) 0.104 (47.0) With heatsink www.xppower.com 2