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| ISOLATED DC/DC CONVERTERS 48 VDC Input 8 VDC/18 A Output, 1/8 Brick 0RCR-18S "Cimarron" Series * * * * * * Industry Standard Eighth-Brick Package Up to 140 W at 95% Efficiency 1500 V Isolation Remote On/Off Low Cost RoHS Compliant 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) Remote On/Off Ambient Temperature Storage Temperature Min -0.3 V -0.3 V -40 C -40 C Typ Max 80 V 80 V 85 C 125 C Notes Input Specifications Parameter Input Voltage Input Current (full load) Input Current (no load) Input Current (disabled) Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) I t Inrush Current Transient Turn On Voltage Threshold Turn Off Voltage Threshold 2 Min 36 V - Typ 0.039 A s 34.5 V 32.5 V 2 Max 60 V 3A 45 mA 3 mA 10 mA 5 mA 0.062 A s 2 Notes 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. 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 Vin=36 V Vin=48 V Vin=60 V Line Regulation Load Regulation Vin=36 V Vin=48 V Vin=60 V Regulation Over Temperature (-40 C to +85 C) Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (rms) 0A 120%Io,max 0.5 V 0.5 V 0.5 V 30 mV 1.3 A2s 15 mV 18 A 140%Io,max 2.1 A2s 20 mV Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor and a 15 uF Tantalum capacitor at the output; Vin=48 V. Min Typ 6V 8V 10 V 4V Max Notes Ripple and Noise (pk-pk) Turn on Time Overshoot at Turn on Output Capacitance Transient Response Overshoot Settling Time Vin=48 V 50% ~ 25% Max Load Overshoot Settling Time 0 uF 90 mV 10 mS 0% - 110 mV 3% 3000 uF 25% ~ 50% Max Load - 100 mV 120 uS 100 mV 120 uS 150 uS 150 uS 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 Efficiency Switching Frequency Isolation capacitance Over Temperature Protection MTBF Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 2.30 x 0.9 x 0.41 58.4 x 22.8 x 10.41 23 g Min 93% 200 kHz Typ 95% 220 kHz 500 pF 115 C 2.4X10 hours 6 Max 240 kHz - 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) Note: All specifications are typical at 25 C unless otherwise stated. Control Specifications Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Current Sink Active Low -0.3 V 2.5 V 0 0.8 V 80 V 0RCR-18S08L. The remote on/off pin open, Unit off. Back bias diode Min Typ Max Notes Efficiency Data: 98.00% 96.00% EFFICIENCY 94.00% 92.00% 90.00% 88.00% 86.00% 0.00 5.00 10.00 15.00 20.00 36V 48V 60V 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 10 Vout (V) 36V 8 6 4 0.00 5.00 10.00 15.00 20.00 48V 60V 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 F ceramic capacitor and 15 F tantalum capacitor Input Reflected Ripple Output Ripple/Noise Input reflected ripple @ Vin=48 Vdc, full load Ripple and noise at full load, 48 Vdc input Ta=25 deg C, and with a 1 F ceramic capacitor and a 15 F 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 1 2 3 4 5 Function Vin+ Remote On/Off VinVoutVout+ 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. 121808 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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