ISOLATED DC/DC CONVERTERS 36 Vdc - 75 Vdc Input 0RCY-50T12x • • • • • • • 12 Vdc /6 A Output RoHS Compliant Isolated High Efficiency High Power Density Fixed Frequency (330 kHz) Input Under-Voltage Lockout Pre-bias Start Up UL60950-1 Recognized (UL/cUL) • • • • • • • • Rev.D Output Over-Voltage Shutdown OCP/SCP Over Temperature Protection Low Cost Output Voltage Trim Positive/Negative Remote Sense Basic Insulation Remote On/Off Description The 0RCY-50T12x is isolated dc/dc converter that operates from a wide input range (36 Vdc - 75 Vdc). This unit will provide up to 72 W of output power. The unit is designed to be highly efficient and low cost. Features include remote on/off, over current protection, over voltage shut down, over temperature protection and under-voltage lockout. This converter is provided in an industry standard 1/8 brick package. Part Selection Output Voltage 12 Vdc Input Voltage 36 Vdc - 75 Vdc Max. Output Current 6A Max. Output Power 72 W Typical Efficiency 92% Model Number Active Low 0RCY-50T12L Model Number Active High 0RCY-50T120 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 Min Typ Max Input Voltage (continuous) Parameter -0.3 V - 80 V Remote On/Off -0.3 V - 18 V - - 1500 V 10M ohm - - Ambient Temperature -40 °C - 85 °C Storage Temperature -55 °C - 125 °C I/O Isolation Voltage Input to Each Output Resistance Notes Input Specifications Parameter Input Voltage Min 36 V Typ 48 V Max 75 V Max Input Current (full load) - - 2.4 A Input Current (no load) - 50 mA 100 mA Remote Off Input Current - 20 mA 30 mA Input Reflected Ripple Current (pk-pk) - 20 mA 30 mA I2t Inrush Current Transient - - 0.1 A2s Input Fuse (not internally) - - 5A Notes Tested with simulated source impedance of 10 uH, 5 Hz to 20 MHz; use a 47 uF/100 V electrolytic cap 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 36 Vdc - 75 Vdc Input 12 Vdc /6 A Output Input Specifications (continued) Parameter Turn-on Voltage Threshold Turn-off Voltage Threshold Input Over Voltage Lockout Min 33 V 31 V 76 V Typ 34 V 32 V 78 V Max 35 V 33 V 80 V Notes Note: All specifications are typical at 25 °C unless otherwise stated. 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 - ±80 mV ±120 mV Ripple and Noise (rms) - 12 mV 20 mV Ripple and Noise (pk-pk) - 50 mV 80 mV 0A - 6A Output DC Current Limit 7.0 A - 10 A Output Over Voltage Clamp 13.6 V - 15.6 V - 50 mS 80 mS - 30 mS 40 mS 0 uF - 1000 uF Output Current Range Turn on Time Rise Time External Admissible Capacitive Load Notes Vin=72V, max load on output, 20MHz BW, with 10uF tantalum and 1uF ceramic cap at the output. Non-latching Transient Response 50% ~ 75% ~ 50% of Max Load - 200 mV 300 mV Settling Time - 150 mV 250 mV di/dt=0.1 A/us, Vin=48 Vdc, Ta=25 °C, with a 1 µF ceramic cap and a 10 uF tantalum cap at output. Note: All specifications are typical at 25 °C unless otherwise stated. General Specifications Parameter Min 90% Typ 92% Max - Switching Frequency 310 kHz 330 kHz 350 kHz Isolation capacitance - 1500 pF - Remote Sense Compensation - - 10% 9.6 V - 13.2 V - 120 °C - Efficiency Output Voltage Trim Range Over Temperature Protection MTBF Notes Measured at Vin=48 V, full load. The total voltage increased by trim and remote sense should not exceed 10%Vo. 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 0.896 x 0.490 58.41 x 22.76 x 12.44 - 40 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 36 Vdc - 75 Vdc Input 12 Vdc /6 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 0 mA - 1 mA Current Sink Notes 0RCY-50T12L. The remote on/off pin open, Unit off. 0RCY-50T120. The remote on/off pin 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 Sense(-) pin. The Trim Up resistor should be connected between the Trim pin and the Sense(+) pin. Only one of the resistors should be used for any given application. Sense(+) Rtrimdown = 511 − 10.22[kΩ] delta Module Trim Rtrimdown Sense(-) (100 + delta ) ⋅ Vo ⋅ 5.11 511 Rtrimup = ( − − 10.22)[kΩ] 1.225 ⋅ delta delta Sense(+) Rtrimup Module Trim Sense(-) Note: delta = (Vo _ req − Vo ) × 100 [% ] Vo Vo_req=Desired (trimmed) output voltage [V] Output voltage Vo=12 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 36 Vdc - 75 Vdc Input 12 Vdc /6 A Output Efficiency Data Efficient Curve 90% 80% 70% Efficien 60% 50% 40% 30% 20% 36 V 10% 48 V 75 V 0% 0A 0.6A 1.5A 3A Output Current (A) 4.5A 6A 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 36 Vdc - 75 Vdc Input 12 Vdc /6 A Output Ripple and Noise Waveforms 36 Vdc input, 12 Vdc/6 A output 48 Vdc input, 12 Vdc/6 A output 75 Vdc input, 12 Vdc/6 A output Note: Ripple and noise at full load, 0-20 MHz BW, Ta=25 deg C, with a 0.1uF ceramic cap and a 10 uF Tantalum cap at 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 36 Vdc - 75 Vdc Input 12 Vdc /6 A Output Transient Response Waveforms 50%-75% Load Transients at Vin=48 V, di/dt=0.1 A/us@Ta=25℃ 75%-50% Load Transients at Vin=48 V, di/dt=0.1 A/us@Ta=25℃ 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 36 Vdc - 75 Vdc Input 12 Vdc /6 A Output Mechanical Outline Pin Connections Pin Name Function Pin Dia 1 Vin+ 0.040’’ 2 On/Off 3 4 5 6 7 8 VinVoutSenseTrim Sense+ Vout+ Positive input voltage Input to turn converter on and off, referenced to VinNegative input voltage Negative output voltage Negative remote sense Output voltage trim Positive output voltage Positive output voltage 0.040’’ 0.040’’ 0.062’’ 0.040’’ 0.040’’ 0.040’’ 0.062’’ Notes: 1. Pin 5 must be connected to Vout-. 2. Leave Pin 6 open for nominal voltage. 3. Pin 7 must be connected to 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. 090308 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