ISOLATED DC/DC CONVERTERS 48 Vdc Input 12 Vdc /18 A Output 0RQB-D0T12x • RoHS Compliant • Fixed Frequency (300 kHz) Rev.B Output Over Voltage Latch Off • Isolated • Over Temperature Protection • High Efficiency • SCP/OCP • High Power Density • Low Cost • Input Under Voltage Lockout • Remote On/Off • Basic Insulation Description The 0RQB-D0T12x are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will provide up to 216 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, input under-voltage and output over voltage protection. These converters are provided in an industry standard quarter brick package. Part Selection Output Voltage 12 Vdc Input Voltage 36 Vdc - 75 Vdc Max. Output Current 18 A Max. Output Power 216 W Typical Efficiency 92.5% Model Number Active High 0RQB-D0T120 Model Number Active Low 0RQB-D0T12L 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 Min -0.3 V -0.3 V Typ - Max 80 V 18 V I/O Isolation Voltage Ambient Temperature Storage Temperature -40 °C -55 °C - 2250 V 85 °C 125 °C Notes Note: All specifications are typical at 25 °C unless otherwise stated. Input Specifications Parameter Input Voltage Input Current (no load) Input Current (full load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) Min 36 V - Typ 48 V 110 mA 4 mA Max 75 V 200 mA 7A 7 mA - 20 mA - - 5 mA - I t Inrush Current Transient - TBD - Turn-on Voltage Threshold Turn-off Voltage Threshold 31 V 34 V 33 V 35 V - 2 Notes With simulated source impedance of 12 uH, 5 Hz to 20 MHz; use a 220uF/100 V electrolytic capacitor with ESR = 1 ohm max. at 200 kHz Note: All specifications are typical at nominal input, full load 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 /18 A Output Output Specifications Parameter Min Typ Max 11.76 V 12 V 12.24 V Line Regulation - 20 mV - Load Regulation Regulation Over Temperature (-40 °C to 85 °C) Output Current - 30 mV - - 0.02%Vo/℃ - 0A - 18 A Current Limit Threshold 19 A 21 A 27 A Ripple and Noise (rms) - 30 mV 50 mV Ripple and Noise (pk-pk) - 85 mV 150 mV Turn on Time - 10 mS - Overshoot at Turn on - 0% 5% Output Capacitance - - 6000 uF Output Voltage Set Point Notes Vin=48 V, Io=100%Load 0 - 20 MHz BW, with 1 uF ceramic load capacitor and a 10uF Tantalum capacitor at the output Transient Response 50% ~ 75% Max Load 75% ~ 50% Max Load Overshoot - 300 mV 600 mV Settling Time - 100 uS 200 uS - 300 mV 600 mV - 100 uS 200 uS Overshoot VO=12 V Settling Time di/dt=0.1A/us, Vin=48Vdc, Ta=25 °C, with 1 uF ceramic capacitor and a 10uF Tantalum capacitor at the output. Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated. General Specifications Parameter Min Typ Max 89% 92.5% - Switching Frequency 270 kHz 300 kHz 330 kHz Isolation Capacitance - 3000 pF - Input to Output Isolation Voltage - - 2250 V Remote Sense Compensation - - 10% 90% - 110% - 130 ℃ - 13.5 V - 15 V Efficiency Output Voltage Trim Range Over Temperature Protection Over Voltage Protection MTBF Notes Vin=48 V, full load The voltage increased by trim and sense should not exceed 110%Vout. Vin=48 V, Io=full load, Latch mode Calculated Per Bell Core SR-332 (Vin=48 V, Vo=12 V, Io=14.4 A, 300LFM forced air flow,Ta = 25 °C) 1,632,203 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 2.30 x 1.45 x 0.394 58.42 x 36.83 x 10.00 - 48 g - 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 /18 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 Min Typ Max -0.3 V - 0.8 V 2.4 V - 18 V -0.3 V - 0.8 V 2.4 V - 18 V Notes The Remote On/Off pin is open, Unit off. The Remote On/Off pin is open, Unit 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. Rtrimdown = Rtrimup = Note: delta = Vout 511 − 10.22[kΩ] delta Module Trim GND (100 + delta ) ⋅ Vo ⋅ 5.11 − 625 − 10.22[kΩ] 1.225 ⋅ delta Rtrimdown Vout Module (Vo _ req − Vo ) × 100[%] Trim Rtrimup GND Vo Output voltage Vo=12.004 V Efficiency Data 96.0% EFFICIENCY 94.0% 92.0% 90.0% 36 V 48 V 75 V 88.0% 86.0% 84.0% 82.0% 80.0% 1.8A 4.5A 9A 13.5A 18A 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 12 Vdc /18 A Output Thermal Derating Curve Vin=48V, with maximum junction temperature of semiconductors derated to 120℃. Ripple and Noise Waveform Note: Ripple and noise at full load, 48 Vdc input, 12 Vdc/18 A output, and with a 1 uF ceramic cap and a 10 uF tantalum 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 /18 A Output Transient Response Waveforms Vout= 12 V 50%-75% Load Transients at Vin=48 V@Ta=25℃ Vout= 12 V 75%-50% Load Transients at Vin=48 V@Ta=25℃ Note: Transients response at di/dt=0.1 A/us, Vin=48 Vdc, Ta=25 °C, with 1 uF ceramic capacitor and a 10uF Tantalum capacitor 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 /18 A Output Mechanical Outline Pin Connections Pin Function Pin Size 1 2 3 4 5 6 7 8 Vin(+) On/Off Vin(-) Vo(-) RS(-) Trim RS(+) Vo(+) 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. ©2007 Bel Fuse Inc. Specifications subject to change without notice. 121107 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