ISOLATED DC/DC CONVERTERS 48 Vdc Input 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick xRSB-50T Series RoHS Compliant Rev.C • Isolated • Input Under Voltage Lockout • Fixed Frequency (600 kHz) • Output Over Voltage Shutdown • High Efficiency • OCP/SCP • High Power Density • Over Temperature Protection • Low Cost • Remote On/Off (option) • Output Voltage Trim • Positive/Negative Remote Sense • Basic Insulation • Through Hole and SMT (option) • UL60950-1 Recognized (UL/cUL) Description The xRSB-50T series are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will provide up to 60 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 sixteenth brick package. Part Selection Output Voltage 1.2 V Input Voltage 36 V - 75 V Max. Output Current 25 A Max. Output Power 30 W Typical Efficiency 84% Model Number Active Low xRSB-50TV2L Model Number Active High xRSB-50TV20 1.5 V 36 V - 75 V 22 A 33 W 85% xRSB-50TV5L xRSB-50TV50 1.8 V 36 V - 75 V 20 A 36 W 87% xRSB-50TV8L xRSB-50TV80 2.5 V 36 V - 75 V 18 A 45 W 87% xRSB-50T02L xRSB-50T025 3.3 V 36 V - 75 V 15 A 50 W 89% xRSB-50T03L xRSB-50T033 5.0 V 36 V - 75 V 12 A 60 W 90% xRSB-50T05L xRSB-50T050 12 V 36 V - 75 V 5A 60 W 89% xRSB-50T12L xRSB-50T120 Notes: 1. Add “G” suffix at the end of the model number to indicate Tray Packaging. Replace”x” with “S” to indicate SMT package, or “0” to indicate through hole package. 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. Absolute Maximum Ratings Min Typ Max Input Voltage (continuous) Parameter -0.3 V - 80 V Input Voltage Transient (100 ms) -0.3 V Remote On/Off -0.3 V - 18 V - - 1500 V Ambient Temperature -40 °C - 85 °C Storage Temperature -55 °C - 125 °C I/O Isolation Voltage Notes 100 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Input Specifications Parameter Input Voltage Input Current (full load) Input Current (no load) Remote Off Input Current Min 36 V - Typ 48 V 70 mA 1 mA Max 75 V 2.4 A 120 mA 3 mA Notes Input Reflected Ripple Current (pk-pk) - 20 mA 50 mA Input Reflected Ripple Current (rms) - 3 mA 7 mA Tested with simulated source impedance of 15 uH, 5 Hz to 20 MHz; use a 100 uF/100 V electrolytic capacitor with ESR=1 ohm max at 200 kHz at the input. 2 2 2 I t Inrush Current Transient - 0.01 A s 0.02 A s Turn On Voltage Threshold Turn Off Voltage Threshold 31 V 30 V 32 V 31 V 35 V 34 V Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated. Output Specifications Parameter Min Typ Max 1.182 V 1.478 V 1.773 V 2.463 V 3.250 V 4.925 V 11.750 V 1.2 V 1.5 V 1.8 V 2.5 V 3.3 V 5.0 V 12.0 V 1.218 V 1.523 V 1.827 V 2.538 V 3.350 V 5.075 V 12.250 V Vo=1.2 - 1.8 V Vo=2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V - ±0.5 mV ±1 mV ±3 mV ±4 mV ±10 mV ±3 mV ±6 mV ±8 mV ±9 mV ±25 mV Vo=1.2 - 2.5 V Vo=3.3 - 5.0 V Vo=12 V - ±3 mV ±4 mV ±9 mV ±5 mV ±9 mV ±18 mV Regulation Over Temperature(-40 °C to +85 °C) Vo=1.2 V Vo=1.5 - 1.8 V Vo=2.5 - 3.3 V Vo=5.0 V Vo=12 V - ±4 mV ±6 mV ±9 mV ±15 mV ±20 mV ±9 mV ±14 mV ±16 mV ±30 mV ±35 mV 0A 0A 0A 0A 0A 0A 0A - 25 A 22 A 20 A 18 A 15 A 12 A 5A Notes Output Voltage Set Point Vo=1.2 V Vo=1.5 V Vo=1.8 V Vo=2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V Line Regulation Load Regulation Test conditions: Vin=48 V; Io=50% load Output Current Vo=1.2 V Vo=1.5 V Vo=1.8 V Vo=2.5 V Vo=3.3 V Vo=5.0 V 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 48 Vdc Input 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Output Specifications (continued) Parameter Current Limit Threshold Min Typ Max 30 A 28 A 24 A 22 A 19 A 14 A 5.2 A - 40 A 34 A 28 A 26 A 22 A 19 A 6.5 A 2 0.5 A s 47 A 40 A 34 A 30 A 26 A 24 A 8.5 A 2 1A s Vo=1.2 - 1.8 V Vo=2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V - 6 mV 10 mV 12 mV 25 mV 30 mV 12 mV 20 mV 25 mV 50 mV 55 mV Vo=1.2 - 1.8 V Vo=2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V - 40 mV 45 mV 55 mV 70 mV 90 mV 35 mS 0% 70 mV 80 mV 90 mV 120 mV 180 mV 70 mS 5% Vo=1.2 V Vo=1.5 V Vo=1.8 - 2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V 470 uF 470 uF 470 uF 220 uF 100 uF 22 uF - 20000 uF 15000 uF 10000 uF 5600 uF 4700 uF 470 uF Vo=1.2 V Vo=1.5 V Vo=1.8 V Vo=2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V Short Circuit Surge Transient Ripple and Noise (rms) Ripple and Noise (pk-pk) Turn on Time Overshoot at Turn on Output Capacitance Transient Response Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time Vo=1.2 V Vo=1.5 - 1.8 V Vo=2.5 - 3.3 V Vo=5.0 V Vo=12 V - 40 mV 80 uS 40 mV 80 uS 110 mV 110 uS 110 mV 110 uS 150 mV 120 uS 150 mV 120 uS 220 mV 120 uS 220 mV 120 uS 400 mV 150 uS 400 mV 150 uS 80 mV 150 uS 80 mV 150 uS 150 mV 180 uS 150 mV 180 uS 250 mV 200 uS 250 mV 200 uS 350 mV 250 uS 350 mV 250 uS 650 mV 300 uS 650 mV 300 uS Notes Tested at 0-20 MHz BW, with a 1 uF ceramic capacitor and a Tantalum capacitor (refer to the min. output capacitance below for each output) at the output. Recommend to use AVX TPS series Tantalum capacitor as the min capacitor Test conditions: di/dt = 0.1 A/uS, Vin=48 V, with a 1uF ceramic capacitor and a Tantalum capacitor (refer to the min. output capacitance above for each output) at the output. 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick General Specifications Parameter Min Typ Max 81% 82% 84% 86% 87% 86% 84% 85% 87% 89% 90% 89% - Switching Frequency 540 kHz 600 kHz 660 kHz Isolation Capacitance - 3900 pF - Output Voltage Trim Range Vo=1.2 - 5.0 V Vo=12 V 90% Vo 80% Vo - 110% Vo 110% Vo Over Temperature Protection 120 °C - 140 °C - 130% Vo 160% Vo Efficiency Vo=1.2 V Vo=1.5 V Vo=1.8 - 2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V Over Voltage Protection MTBF 2,770,832 hours Notes Vin=48 V, full load Test conditions: Vin=48 V, full load and short the feedback optocoupler. Calculated Per Bell Core SR-332 (IO =80% load, Vin=48 V, Vo=5 V; Ta = 25 °C) Dimensions Inches (L × W × H) Millimeters (L × W × H) Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 1.3 x 0.9 x 0.364 33.02 x 22.86 x 9.24 SMT Package 1.3 x 0.9 x 0.378 33.02 x 22.86 x 9.60 Through Hole Package - 13 g - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Min Typ Max -0.3 V - 0.8 V 2.95 V - 18 V -0.3 V - 0.8 V 2.95 V - 18 V 0 mA - 1 mA Notes Remote On/Off Signal Low (Unit On) Active Low Signal High (Unit Off) Signal Low (Unit Off) Active High Signal High (Unit On) Current Sink - When Remote On/Off pin is open, for active low option, unit is off; for active high option, unit is on 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Output Trim Equations Equations for calculating the trim resistor are shown below (Unit: kΩ). The Trim Down resistor should be connected between the Trim pin and Ground pin. The Trim Up resistor should be connected between the Trim pin and the Vout. Only one of the resistors should be used for any given application. 1) Trim Equations for Vo=1.2 V Vout Rtrimdown = 511 − 10.22 delta Module Trim GND Rtrimup = Rtrimdown (100 + delta ) ⋅ Vo ⋅ 5.11 − 313 − 10.22 0.6125 ⋅ delta Vout Note: delta = (Vo _ req − Vo ) × 100[% ] Vo Module Trim Rtrimup GND Vo_req=Desired (trimmed) output voltage [V] Vo=1.202 V 2) Trim Equations for Vo=1.5 V - 12 V Rtrimdown = Rtrimup = Note: 511 − 10.22 delta (100 + delta ) ⋅Vo ⋅ 511 − 626 − 10.22 1.225 ⋅ delta delta = (Vo _ req − Vo ) × 100 [% ] Vo Vo_req=Desired (trimmed) output voltage [V] Vo=1.503 V for 1.5 V output; Vo=1.804 V for 1.8 V output; Vo=2.505 V for 2.5 V output; Vo=3.308 V for 3.3 V output; Vo=5.002 V for 5 V output; Vo=12.007 V for 12 V 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick 90% 90% 85% 85% 80% 36 V 48 V 75 V 75% 70% 65% 80% EFFICIENCY EFFICIENCY Efficiency Data 36 V 48 V 75 V 75% 70% 65% 60% 60% 55% 55% 50% 50% 2.5A 6.25A 12.5A 18.75A 25A 2.2A OUTPUT CURRENT (A) 5.5A 16A 22A Vo=1.5 V 90% 90% 85% 85% 80% 36V 48V 75V 75% 70% 65% EFFICIENCY EFFICIENCY Vo=1.2 V 80% 36V 48V 75V 75% 70% 65% 60% 60% 55% 55% 50% 50% 2A 5A 10A 15A 20A 1.8A OUTPUT CURRENT (A) 4.5A 12.A 18A Vo=2.5 V 90% 85% 85% 80% 75% 36V 48V 75V 70% 65% EFFICIENCY 90% 80% 75% 65% 60% 55% 55% 50% 36 V 48 V 75 V 70% 60% 1.5A 9A OUTPUT CURRENT (A) Vo=1.8 V EFFICIENCY 11A OUTPUT CURRENT (A) 50% 3.75A 7.5A 11.25A OUTPUT CURRENT (A) Vo=3.3 V 15A 1.2A 3A 6A 9A 12A OUTPUT CURRENT (A) Vo=5.0 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Efficiency Data (continued) 90% EFFICIENCY 85% 80% 75% 36 V 48 V 75 V 70% 65% 60% 55% 50% 0.5A 1.25A 2.5A 3.75A 5A OUTPUT CURRENT (A) Vo=12 V Thermal Derating Curves Vin=48 V, Vo=1.2 V Vin=48 V, Vo=2.5 V, Vin=48 V, Vo=1.8 V Vin=48 V, Vo=3.3 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Thermal Derating Curves (continued) Vin=48 V, Vo=5.0 V Vin=48 V, Vo=12 V Ripple and Noise Waveforms Vo=1.2 V Vo=1.8 V Vo=2.5 V Vo=3.3 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Ripple and Noise Waveforms (continued) Vo=5.0 V Vo=12 V Note: Ripple and Noise at full load, 48 V input, Ta=25 deg C. 1) For Vo=1.2 V -2.5 V, with a 1 uF ceramic capacitor and a 470 uF tantalum cap at the output; 2) For Vo=3.3 V, with a 1 uF ceramic capacitor and a 220 uF tantalum cap at the output; 3) For Vo=5.0 V, with a 1 uF ceramic capacitor and a 100 uF tantalum cap at the output; 4) For Vo=12 V, with a 1 uF ceramic capacitor and a 22 uF tantalum cap at the output. Transient Response Waveforms Vo=1.2 V 50% to 25% Load Transients Vo=1.2 V 25% to 50% Load Transients 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Transient Response Waveforms (continued) Vo=1.8 V 50% to 25% Load Transients Vo=1.8 V 25% to 50% Load Transients Vo=2.5 V 50% to 25% Load Transients Vo=2.5 V 25% to 50% Load Transients Vo=3.3 V 50% to 25% Load Transients Vo=3.3 V 25% to 50% Load Transients 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Transient Response Waveforms (continued) Vo=5 V 50% to 25% Load Transients Vo=12 V 50% to 25% Load Transients Vo=5 V 25% to 50% Load Transients Vo=12 V 25% to 50% Load Transients Note: Transients Response at Vin=48 V, di/dt=0.1A/uS, Ta=25 deg C. 1) For Vo=1.2 V -2.5 V, with a 1 uF ceramic capacitor and a 470 uF tantalum cap at the output; 2) For Vo=3.3 V, with a 1 uF ceramic capacitor and a 220 uF tantalum cap at the output; 3) For Vo=5.0 V, with a 1 uF ceramic capacitor and a 100 uF tantalum cap at the output; 4) For Vo=12 V, with a 1 uF ceramic capacitor and a 22 uF tantalum cap 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Mechanical Outline SMT Package Pin Connections Pin Function 1 Vin (+) 2 Remote On/Off 3 Vin (-) 4 Vout- 5 Remote Sense (-) 6 Trim 7 Remote Sense (+) 8 Vout (+) 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 1.2 Vdc - 12 Vdc / 25 A - 5 A Outputs, 1/16 Brick Mechanical Outline (continued) Through Hole Package Pin Connections Pin 1 2 3 4 5 6 7 8 Function Vin (+) Remote On/Off Vin (-) VoutRemote Sense (-) Trim Remote Sense (+) Vout (+) 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. 012907 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