ISOLATED DC/DC CONVERTERS 48 VDC Input 12 VDC/20 A Output, 1/4 Brick 0RCM-20S/30S Series RoHS Compliant • Industry standard quarter-brick package • Up to 240 W at 96% efficiency • 1500 V isolation • Remote on/off • Low cost • Safety Agency Approvals PRELIMINARY Description The 0RCM-20S/30S “Cimarron” Series are isolated DC/DC converters that operate from a nominal 48 VDC source. These converters use a full bridge power train to provide isolation and step down. These units will provide up to 240 W of output power from a nominal 48 VDC input. These units are designed to be highly efficient and low cost. Features include remote on/off, over current protection and under voltage lockout. These converters are provided in an industry standard quarter-brick package. Part Selection Output Voltage Input Voltage 12 V 8V 48 V 48 V Max. Output Current 20 A 30 A Max. Output Power 240 W 240 W Typical Efficiency 96% 96% Model Number 0RCM-20S12L 0RCM-30S08L Notes: 1. Change last character in part number from “L” to “H” for Active High On/Off Logic (e.g. 0RCM-20S12H). 2. Add “G” suffix at the end of the model number to indicate Tray Packaging. 3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. Input Specifications Parameter Input Voltage Range Input Current (no load) Input Current (full load) Min 36 V - Typ 48 V - Max 55 V 80 mA 5.3 A Notes Reflected Ripple Current(pk-pk) - - 100 mA Reflected Ripple Current(rms) - - 50 mA Reflected ripple current through a 12 uH source inductor at nominal input voltage and rated load current. Notes Output Specifications Parameter Output Voltage 0RCM-20S12x 0RCM-30S08x Output Current 0RCM-20S12x 0RCM-30S08x Load Regulation Min Typ Max 36 Vin 48 Vin 55 Vin 8.8 V 5.8 V 12.0 V 8.0 V 14.0 V 9.4 V 0A 0A - - 20 A 30 A 5% Ripple and Noise (pk-pk) - - 100 mV Ripple and Noise (rms) - - 45 mV Setpoint at no load. 0 to 20 MHz BW, use 1.0 uF ceramic cap and 15 uF/100 m ohm tantalum cap at the output. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com ISOLATED DC/DC CONVERTERS 48 VDC Input 12 VDC/20 A Output, 1/4 Brick Output Specifications (continued) Parameter Min Typ Max Transient Response Max deviation Recovery to within ± 1% Notes - 200 mV 50 uS 350 mV 100 uS di/dt =0 .1 A/uS, Vin =48 V Ta = 25 °C, 25% load change. General Specifications Parameter Min Typ Max Notes Switching Frequency - 120 kHz - Operating Temperature 0 °C - 70 °C Non-Operating Temperature -55 °C - 125 °C Weight - 42 g (1.5 oz) - MTBF (MIL-HDBK-217K) Dimensions Inches (L × W × H) Millimeters (L × W × H) Protection Features Short circuit Over current Under-voltage Remote On/Off Active Low (Optional Active High) Safety Agency Approvals (pending) >1,000,000 hours 2.28 x 1.45 x 0.50 57.9 x 36.8 x 12.7 Continuous 120% to 140% max Io UVLO Vin < 39.0 0V 2.4 V - 0.8 V 18 V UL / cUL Recognized Certified to EN60950 25 100.00% 95.00% Output Current 20 400LFM 300LFM 200LFM 100LFM Natural convection 400LFM 300LFM 200LFM 100LFM Natural convection 15 10 90.00% 85.00% 80.00% 75.00% 70.00% 65.00% 5 60.00% 1 2.5 5 10 15 0 0 10 20 30 40 50 60 70 80 Ambient Temperature C Efficiency vs. Output Current (A) air flowing from input to output (nominal input voltage). Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com 20 ISOLATED DC/DC CONVERTERS 48 VDC Input 12 VDC/20 A Output, 1/4 Brick Mechanical drawing RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. ©2008 Bel Fuse Inc. Specifications subject to change without notice. 103108 CORPORATE FAR EAST EUROPE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com Bel Fuse Ltd. 8F/ 8 Luk Hop Street San Po Kong Kowloon, Hong Kong Tel 852-2328-5515 Fax 852-2352-3706 www.belfuse.com Bel Fuse Europe Ltd. Preston Technology Management Centre Marsh Lane, Suite G7, Preston Lancashire, PR1 8UD, U.K. Tel 44-1772-556601 Fax 44-1772-888366 www.belfuse.com