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| ISOLATED DC/DC CONVERTERS 48 VDC Input 12 VDC/20 A Output, 1/4 Brick 0RCM-20S/30S Series * * * * * * RoHS Compliant PRELIMINARY Industry standard quarter-brick package Up to 240 W at 96% efficiency 1500 V isolation Remote on/off Low cost Safety Agency Approvals 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 12 V 8V Input Voltage 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) Reflected Ripple Current(pk-pk) Reflected Ripple Current(rms) Min 36 V Typ 48 V Max 55 V 80 mA 5.3 A 100 mA 50 mA Notes Reflected ripple current through a 12 uH source inductor at nominal input voltage and rated load current. Output Specifications Parameter Output Voltage 0RCM-20S12x 0RCM-30S08x Output Current 0RCM-20S12x 0RCM-30S08x Load Regulation Ripple and Noise (pk-pk) Ripple and Noise (rms) Min 36 Vin Typ 48 Vin Max 55 Vin Notes Setpoint at no load. 8.8 V 5.8 V 0A 0A - 12.0 V 8.0 V - 14.0 V 9.4 V 20 A 30 A 5% 100 mV 45 mV 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 Transient Response Max deviation Recovery to within 1% Min Typ 200 mV 50 uS Max 350 mV 100 uS Notes di/dt =0 .1 A/uS, Vin =48 V Ta = 25 C, 25% load change. General Specifications Parameter Switching Frequency Operating Temperature Non-Operating Temperature Weight MTBF (MIL-HDBK-217K) Dimensions Inches (L x W x H) Millimeters (L x W x H) Protection Features Short circuit Over current Under-voltage Remote On/Off Active Low (Optional Active High) Safety Agency Approvals (pending) Min 0 C -55 C Typ 120 kHz 42 g (1.5 oz) >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 Max 70 C 125 C Notes UL / cUL Recognized Certified to EN60950 25 100.00% 20 400LFM 300LFM 200LFM 100LFM Natural convection 400LFM 300LFM 200LFM 100LFM Natural convection 95.00% 90.00% 85.00% 80.00% 75.00% 70.00% 65.00% 60.00% 1 2.5 5 10 15 20 Output Current 15 10 5 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 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. (c)2008 Bel Fuse Inc. Specifications subject to change without notice. 103108 CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com FAR EAST 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 EUROPE 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 |
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