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| ISOLATED DC/DC CONVERTERS 48 VDC Input 12 VDC/55A Output, 1/4 Brick 0RCM-55S12x RoHS Compliant * * * * * Isolated High Efficiency High Power Density Low Cost Over Temperature Protection * * * * PRELIMINARY Rev.D Input Under-Voltage Lockout Input Over-Voltage Shutdown OCP/SCP Remote On/Off Description The 0RCM-55S12x is isolated DC/DC onverter that operates 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 600 W of output power from a nominal 55 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 Vdc Input Voltage 48 Vdc Max. Output Current 55 A Max. Output Power 600 W Typical Efficiency 97% Model Number Active Low 0RCM-55S12L Model Number Active High 0RCM-55S120 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 (Active Low) Remote On/Off (Active High) Ambient Temperature Storage Temperature Min -0.3 V -0.3 V 1V -0.3 V 1V -0.3 V -40 C -55 C Typ Max 80 V 57 V 18 V 0.6 V 18 V 0.6 V 85 C 125 C Notes Non-operating Operating Module Off Module On Module On Module Off Input Specifications Parameter Input Voltage Input Current (full load) Input Current (no load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) I2t Inrush Current Transient Min 38 V Typ 80 mA 5 mA 40 mA 30 mA TBD Max 55 V 14.5 A 150 mA 10 mA 100 mA 50 mA Active High Tested with simulated source impedance of 12 uH, 5 Hz to 20 MHz; use a 100 uF/100 V electrolytic capacitor and 1 uF/100 V ceramic capacitor at the input. Vin=38 V Notes 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/55A Output, 1/4 Brick Input Specifications (continued) Parameter Input Over-Voltage Protection Threshold Input Over-Voltage Protection Threshold Turn On Voltage Threshold Turn Off Voltage Threshold Min 58 V 57 V 33 V 32 V Typ 59 V 58 V 34.5 V 33.5 V Max 60 V 59 V 36 V 35 V Notes Turn-Off Voltage Threshold Turn-On Voltage Threshold Note: All specifications are typical at 25 C unless otherwise stated. Output Specifications Parameter Output Voltage Set Point Vin=38 V Vin=48 V Vin=55 V Load Regulation Regulation Over Temperature (-40 C to +85 C) Output Current Operating Output Power Range Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (rms) Ripple and Noise (pk-pk) Turn on Time Overshoot at Turn on Output Capacitance Load sharing ( 2 units) Transient Response 50% ~ 75% Max Load 75% ~ 50% Max Load Overshoot Settling Time Overshoot Settling Time Vin=48 V 500 mV 200 uS 500 mV 200 uS Test conditions: di/dt = 1 A/uS, Vin=48 V, with a 1 uF ceramic capacitor at the output. Min 9.30 V 11.80 V 13.55 V 0A 0W 110% 0 uF Typ 9.50 V 12.0 V 13.75 V 400 mV 300 mV 125% TBD 25 mV 120 mV 20 mS 0% 4% Max 9.70 V 12.20 V 13.95 V 600 mV 400 mV 55 A 600 W 140% 60 mV 200 mV 35 mS 3% 5000 uF Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor at the output. Vin=55 V lo=no load Notes 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 12 VDC/55A Output, 1/4 Brick General Specifications Parameter Efficiency Switching Frequency Isolation Capacitance Isolation Voltage Over Temperature Protection MTBF Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 2.30 x 1.45 x 0.50 58.42 x 36.83 x 12.70 75 g Min 96 kHz Typ 97% 125 kHz 1500 pF 1500 V 120 C TBD Max Calculated Per Bell Core SR-332 (Vin=48 V; IO=80% full load; Ta = 25 C) Notes Vin=48 V, full load - Note: All specifications are typical at 25 C unless otherwise stated. Control Specifications Parameter Remote On/Off Signal High (Unit On) Signal Low (Unit Off) Signal High (Unit On) Signal Low (Unit Off) Active High Active Low 1V -0.3 V 1V -0.3 V 12 V 0.6 V 12 V 0.6 V The remote on/off pin is open: If active low, the Unit Off; If active high, the Unit On. Min Typ Max Notes 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/55A Output, 1/4 Brick Efficiency Data 99.00% 98.00% 97.00% Efficiency 96.00% 95.00% 94.00% 93.00% 92.00% 5 A 10A 15 A 20A 25 A 30A 35A 40A 45A 50A 55A Output current 38 V 48 V 55V 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 12 VDC/55A Output, 1/4 Brick Ripple and Noise Waveform Note: Ripple and noise at full load, 48 Vdc input, with 1uF ceramic cap at output and Ta=25 deg C. Transient Response Waveforms 50% to 75% load Transient at 48 Vdc input 75% to 50% load Transient at 48 Vdc input Note: Transient Response at 48 Vdc input, di/dt=1 A/uS, Cout=1uF ceramic cap, and Ta=25 deg 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 12 VDC/55A Output, 1/4 Brick Mechanical Outline Pin Connections Pin 1 2 3 4 5 6 7 Function Vin+ On/Off VinVout+ VoutVout+ VoutPin Size 0.040'' 0.040'' 0.040'' 0.062'' 0.062'' 0.062'' 0.062'' Note: The heat sink can be customer made. 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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