ISOLATED DC/DC CONVERTERS 48 VDC Input 8 VDC/18 A Output, 1/8 Brick 0RCR-18S “Cimarron” Series RoHS Compliant • Industry Standard Eighth-Brick Package • Up to 140 W at 95% Efficiency • 1500 V Isolation • Remote On/Off • Low Cost • UL/cUL Recognized (Certified to EN60950-1) Description The 0RCR “Cimarron” Series are isolated DC/DC converters that operate from a nominal 48 VDC source. These converters use a half bridge power train to provide isolation and step down. These units will provide up to 140 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 eighth-brick package. Part Selection Output Voltage Vin / 6 Input Voltage 48 Vdc Max. Output Current 18 A Max. Output Power 140 W Typical Efficiency 95% Model Number Active Low 0RCR-18S08L Notes: 1. Add “G” suffix at the end of the model number to indicate Tray Packaging. 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. Absolute Maximum Ratings Parameter Input Voltage (continuous) Min -0.3 V Typ - Max 80 V Notes Remote On/Off -0.3 V - 80 V Ambient Temperature -40 °C - 85 °C Storage Temperature -40 °C - 125 °C Parameter Input Voltage Min 36 V Typ - Max 60 V Input Current (full load) - - 3A Input Current (no load) - - 45 mA Input Current (disabled) - - 3 mA - - 10 mA - - Input Specifications Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) 2 Notes 5 mA 2 Tested with simulated source impedance of 10 uH, 5 Hz to 20 MHz; use a 47 uF/100 V electrolytic capacitor with ESR = 1 ohm max. at 200 kHz at 25 °C. 2 I t Inrush Current Transient - 0.039 A s 0.062 A s Turn On Voltage Threshold - 34.5 V - Turn Off Voltage Threshold - 32.5 V - 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 8 VDC/18 A Output, 1/8 Brick Output Specifications Parameter Output Voltage Set Point Min Typ Max - 6V 8V 10 V - - 4V - - 0.5 V 0.5 V 0.5 V - - 30 mV - 0A - 18 A 120%Io,max - 140%Io,max Short Circuit Surge Transient - 1.3 A2s 2.1 A2s Ripple and Noise (rms) - 15 mV 20 mV Ripple and Noise (pk-pk) - 90 mV 110 mV Turn on Time - 10 mS - Overshoot at Turn on - 0% 3% 0 uF - 3000 uF Overshoot - 100 mV - Settling Time - 120 uS 150 uS Overshoot - 100 mV - Settling Time - 120 uS 150 uS Vin=36 V Vin=48 V Vin=60 V Line Regulation Notes Load Regulation Vin=36 V Vin=48 V Vin=60 V Regulation Over Temperature (-40 °C to +85 °C) Output Current Current Limit Threshold Output Capacitance Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor and a 15 uF Tantalum capacitor at the output; Vin=48 V. Transient Response 25% ~ 50% Max Load Vin=48 V 50% ~ 25% Max Load Test conditions: di/dt = 0.5 A/uS, Vin=48 V, with a 500 uF electrolytic capacitor at the output. Note: All specifications are typical at 25 °C unless otherwise stated. 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 8 VDC/18 A Output, 1/8 Brick General Specifications Parameter Min Typ Max 93% 95% - Switching Frequency 200 kHz 220 kHz 240 kHz Isolation capacitance - 500 pF - Over Temperature Protection - 115 °C - Efficiency Notes Vin=48 V, Io=Io max Average PCB temperature will not exceed 115 °C. Calculated Per Bell Core SR-332 (IO = 80% load; Ta = 25 °C) 6 MTBF 2.4X10 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 2.30 x 0.9 x 0.41 58.4 x 22.8 x 10.41 - 23 g - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Min Typ Max -0.3 V - 0.8 V 2.5 V - 80 V - 0 - Notes Remote On/Off Signal Low (Unit On) Active Low Signal High (Unit Off) Current Sink 0RCR-18S08L. The remote on/off pin open, Unit off. Back bias diode Efficiency Data: 98.00% EFFICIENCY 96.00% 94.00% 36V 92.00% 48V 60V 90.00% 88.00% 86.00% 0.00 5.00 10.00 15.00 20.00 OUTPUT CURRENT (A ) 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 8 VDC/18 A Output, 1/8 Brick Output Voltage vs. Current 12 Vout (V) 10 36V 8 48V 60V 6 4 0.00 5.00 10.00 15.00 20.00 OUTPUT CURRENT (A) Thermal Derating Curve 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 8 VDC/18 A Output, 1/8 Brick Thermal Images Test conditions: Input voltage: 48 Vdc Output current: 18 A Output power: 140 W Airflow: 200 LFM Ambient: 25 ˚C 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 8 VDC/18 A Output, 1/8 Brick Turn-On (Enable) Waveform: 0 A Load @ Vin=48 Vdc Waveform:18 A Load (resistave load) @ Vin=48 Vdc CH1=Vout CH2=Enable On CH1=Vout CH2=Enable On Transient Response 50% to 75% and 75% to 50% load Transient at 48 Vdc input and Ta=25 deg C External Load Capacitance: 1 µF ceramic capacitor and 15 µF tantalum capacitor Input Reflected Ripple Input reflected ripple @ Vin=48 Vdc, full load Output Ripple/Noise Ripple and noise at full load, 48 Vdc input Ta=25 deg C, and with a 1 µF ceramic capacitor and a 15 µF tantalum capacitor on 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 8 VDC/18 A Output, 1/8 Brick Mechanical Outline Pin Connections Pin Function 1 Vin+ 2 Remote On/Off 3 Vin- 4 Vout- 5 Vout+ 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. 121808 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