ISOLATED DC/DC CONVERTERS 48 Vdc Input 12 Vdc /12 A Output 0RCY-C2T12x RoHS Compliant Isolated High Efficiency High Power Density Fixed Frequency (300 kHz) Low Cost Input Under-Voltage Lockout Basic Insulation Rev.B Output Over-Voltage Shutdown OCP/SCP Over Temperature Protection Output Voltage Trim Remote On/Off Positive/Negative Remote Sense Description The 0RCY-C2T12x is isolated dc/dc converter that operates from a nominal 48 Vdc source. This unit will provide up to 144 W of output power from a nominal 48 Vdc input. This unit is designed to be highly efficient and low cost. Features include remote on/off, over current protection and under-voltage lockout. This converter is provided in an industry standard eighth brick package. Part Selection Output Voltage 12 Vdc Input Voltage 48 Vdc Max. Output Current 12 A Max. Output Power 144 W Typical Efficiency 93% Model Number Active High 0RCY-C2T120 Model Number Active Low 0RCY-C2T12L Notes: 1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. 2. Add “G” suffix at the end of the model number to indicate Tray Packaging. Absolute Maximum Ratings Parameter Input Voltage (continuous) Input Voltage (Transient) Min Typ Max -0.3 V - 80 V - - 100 V Remote On/Off -0.3 V - 18 V Ambient Temperature -40 C - 85 C Storage Temperature -55 C - 125 C Notes 100 mS Input Specifications Parameter Input Voltage Min 36 V Typ 48 V Max 75 V Input Current (full load) - - 5.0 A Input Current (no load) - 60 mA 120 mA Remote Off Input Current Input Reflected Ripple Current (rms) Input Reflected Ripple Current (pk-pk) - 10 mA 15 mA - 5 mA 10 mA - 25 mA 40 mA I t Inrush Current Transient - 0.1 A s 0.5 A s Turn-on Voltage Threshold 33 V 34 V 36 V Turn-off Voltage Threshold 31 V 32 V 34 V 2 2 Notes With simulated source impedance of 10 uH, 5Hz to 20MHz. Use a 100 uF/100 V electrolytic cap with ESR=1 ohm max, at 200 KHz@25°C. 2 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 /12 A Output Output Specifications Parameter Output Voltage Set Point Min 11.76 V Typ 12.0 V Max 12.24 V Load Regulation - ±12 mV ±24 mV line Regulation Regulation Over Temperature (-40deg.C-85deg.C) - ±12 mV ±24 mV - ±30 mV ±60 mV Ripple and Noise (rms) - 30 mV 50 mV Ripple and Noise (pk-pk) - 90 mV 150 mV Output Current Range 0A - 12 A Output DC Current Limit 13 A 15 A 2 - 2A s 4A s Turn on Time - 60 mS 100 mS - 0% - 0 uF - 680 uF Output Capacitance 0-20MHz BW, with a 1µF ceramic capacitor and a 10 µF Tantalum cap at output. 17 A 2 Short Circuit Surge Transient Overshoot at Turn on Notes Vin=48 V, Io=50%load Transient Response 25% ~ 50% Max Load 50% ~ 25% Max Load Overshoot - 400 mV 600 mV Settling Time - 200 uS 300 uS - 400 mV 600 mV - 200 uS 300 uS Overshoot VO=12 V Settling Time di/dt=0.1A/us, Vin=48Vdc, Ta=25°C, with a 1µF ceramic capacitor and a 10 µF Tantalum cap at output. Note: All specifications are typical at 25 C unless otherwise stated. General Specifications Parameter Min 91% Typ 93% Max - 270 kHz 300 kHz 330 kHz 80% - 110% Remote Sense Compensation - - 10% Over Temperature Protection - 125 C - Over Voltage Protection - 125 % - Efficiency Switching Frequency Output Voltage Trim Range MTBF Notes Measured at Vin=48 V, full load. The total voltage increased by trim and remote sense should not exceed 10%Vo. Vin=48 V, full load, in hiccup Mode Calculated Per Bell Core SR-332 (Io=80%load, Ta = 25 C) TBD Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 2.30 x 0.90 x 0.54 58.42 x 22.78 x 13.73 - 47 g - Isolation characteristics Isolation capacitance - 3900 pF - Input to Output Isolation Voltage 1500 V - - Input to Baseplate Isolation Voltage 1500 V - - Output to Baseplate Isolation Voltage 500 V - - 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 /12 A Output Control Specifications Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Signal Low (Unit Off) Signal High (Unit On) Active Low Active High Current Sink Min Typ Max Notes -0.3 V - 0.8 V 2.4 V - 18 V When Remote On/Off pin is open, unit is off. -0.3 V - 0.8 V 0 mA - 1 mA When Remote On/Off pin is open, unit is on. Output Trim Equations Equations for calculating the trim resistor are shown below. The Trim Down resistor should be connected between the Trim pin and GND pin. The Trim Up resistor should be connected between the Trim pin and the Vout pin. Only one of the resistors should be used for any given application. 511 Rtrimdown 10.22k delta Vout Module Trim GND Rtrimup (100 delta) Vo 5.11 626 10.22k 1 .225 delta Vout Module Note: delta Vo _ req Vo 100 % Rtrimdown Trim Rtrimup GND Vo Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=12.0 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 12 Vdc /12 A Output Efficiency Data Efficiency Curve 94% 92% 90% Efficiency 88% 36 V 86% 84% 82% 48 V 75 V 80% 78% 76% 74% 72% 70% 1.20 3.00 6.00 9.00 12.00 Output Current (A) Thermal Derating Curve Vin=48 V, with maximum junction temperature of semiconductors derated to 120 degree 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 /12 A Output Ripple and Noise Waveform 48 Vdc input, 12.0 Vdc/12 A output Note: Ripple and noise at full load, 0-20 MHz BW, Ta=25 deg C, with a 1uF ceramic cap and a 10 uF Tantalum cap at output. Transient Response Waveforms Vout=12.0 V, 50%-25% Load Transient Vout=12.0 V, 25%-50% Load Transient Note: Transient Response at Vin=48 V, di/dt=0.1 A/uS, external 10 uF tantalum Cap and 1uF ceramic Cap at the output, 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 /12 A Output Mechanical Outline Pin Connections Pin Name Pin Dia 1 2 3 4 5 6 7 8 Vin+ On/Off VinVoutSenseTrim Sense+ Vout+ 0.040’’ 0.040’’ 0.040’’ 0.062’’ 0.040’’ 0.040’’ 0.040’’ 0.062’’ RoHS Compliance Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products. 2009 Bel Fuse Inc. Specifications subject to change without notice. 061809 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