ISOLATED DC/DC CONVERTERS 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick xRSB-40U Series RoHS Compliant Rev.A • Isolated • Input Under Voltage Lockout • Fixed Frequency • Output Over Voltage Shutdown • High Efficiency • OCP/SCP • High Power Density • Over Temperature Protection • Low Cost • Wide Input Voltage • Output Voltage Trim • Positive/Negative Remote Sense • Basic Insulation • Through Hole and SMT(Option) • Remote On/Off Logic (Option) • Input Over Voltage Protection Description The xRSB-40U series are isolated dc/dc converters that operate from a nominal 24 Vdc or 48 Vdc source. These units will provide up to 40 W of output power from an 18 Vdc - 75 Vdc wide input range. 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 Vdc 1.5 Vdc 1.8 Vdc 2.5 Vdc 3.3 Vdc 5.0 Vdc 12 Vdc Input Voltage 18 Vdc - 75 Vdc 18 Vdc - 75 Vdc 18 Vdc - 75 Vdc 18 Vdc - 75 Vdc 18 Vdc - 75 Vdc 18 Vdc - 75 Vdc 18 Vdc - 75 Vdc Max. Output Current 18 A 16 A 14 A 12 A 10 A 8A 3.5 A Max. Output Power 22 W 24 W 25 W 30 W 33 W 40 W 42 W Typical Efficiency 82% 84% 85% 86% 87.5% 87% 85% Model Number Active Low xRSB-40UV2L xRSB-40UV5L xRSB-40UV8L xRSB-40U02L xRSB-40U03L xRSB-40U05L xRSB-40U12L Model Number Active High xRSB-40UV20 xRSB-40UV50 xRSB-40UV80 xRSB-40U025 xRSB-40U033 xRSB-40U050 xRSB-40U120 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 Parameter Input Voltage (continuous) Remote On/Off I/O Isolation Voltage Ambient Temperature Storage Temperature Min -0.3 V -0.3 V - Max 80 V 18 V 1500 V -40 °C -55 °C Typ - Min 18 V Typ 48 V Max 75 V - - 2.5 A 3.0 A 3.5 A Notes 85 °C 125 °C Input Specifications Parameter Input Voltage Input Current (full load) Vo=1.2 V - 1.8 V Vo=2.5 V - 3.3 V Vo=5.0 V - 12 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick Input Specifications (continued) Parameter Input Current (no load) Min - Typ 60 mA Max 120 mA Remote Off Input Current - 1 mA 3 mA Input Reflected Ripple Current (pk-pk) - 20 mA 50 mA Input Reflected Ripple Current (rms) - 3 mA 7 mA I2t Inrush Current Transient - 0.01 A2s 0.02 A2s Turn On Voltage Threshold 16.6 V 17.2 V 17.8 V Turn Off Voltage Threshold 16.2 V 16.8 V 17.4 V Notes 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. Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated. Output Specifications Parameter Output Voltage Set Point 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 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 V - 1.8 V Vo=2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V - ±0.5 mV ±1.0 mV ±3.0 mV ±4.0 mV ±6.0 mV ±3 mV ±4 mV ±8 mV ±9 mV ±15 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 - 18 A 16 A 14 A 12 A 10 A 8A 3.5 A - 0.5 A s 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 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 Short Circuit Surge Transient 2 Notes Test conditions: Vin=48 V; Io=50% load 2 1A s 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick Output Specifications (continued) Parameter Current Limit Threshold Min Typ Max 21 A 19 A 17 A 14 A 11 A 8.8 A 4.2 A 25 A 22 A 20 A 17 A 14 A 10 A 5A 29 A 26 A 23 A 20 A 16 A 12.5 A 6A Vo=1.2 V - 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 V - 1.8 V Vo=2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V Turn on Time - 40 mV 45 mV 55 mV 70 mV 90 mV 25 mS 70 mV 80 mV 90 mV 120 mV 180 mV 50 mS Overshoot at Turn on - 0% 5% 470 uF 470 uF 470 uF 470 uF 330 uF 150 uF 10 uF - 15000 uF 10000 uF 10000 uF 5600 uF 4700 uF 2200 uF 220 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 Notes Ripple and Noise (rms) Ripple and Noise (pk-pk) Output Capacitance 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 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 - 60 mV 80 uS 60 mV 80 uS 60 mV 80 uS 60 mV 80 uS 180 mV 80 uS 180 mV 80 uS 250 mV 100 uS 250 mV 100 uS 400 mV 150 uS 400 mV 150 uS 110 mV 150 uS 110 mV 150 uS 110 mV 150 uS 110 mV 150 uS 250 mV 150 uS 250 mV 150 uS 350 mV 200 uS 350 mV 200 uS 650 mV 300 uS 650 mV 300 uS Tested at 0-20 MHz BW, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output. Recommend to use AVX TPS series Tantalum capacitor as min capacitor. Test conditions: di/dt = 0.1 A/uS, Vin=48 V, with a 1 uF ceramic capacioor and a Min Capacitance of Tantalum capacitor 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick General Specifications Parameter Min Typ Max 78% 79% 81% 83% 85% 85% 83% 82% 84% 85% 86% 87.5% 87% 85% - 450 kHz 500 kHz 500 kHz 550 kHz 550 kHz 600 kHz Isolation Capacitance - 3900 pF - Over Temperature Protection - 125 °C - 90% Vo - 110% Vo - 130% Vo 160% Vo Notes Efficiency 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 Switching Frequency Vo=1.2 V -12 V Vo=1.8 V Output Voltage Trim Range Over Voltage Protection MTBF TBD Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight Vin=48 V, full load Test conditions: Vin=48 V, full load and short the feedback optocoupler. Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) 1.3 x 0.9 x 0.446 33.0 x 22.9 x 11.34 SRSB-40Uxxx 1.3 x 0.9 x 0.460 33.0 x 22.9 x 11.39 0RSB-40Uxxx - 14 g - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Min Typ Max -0.3 V - 0.8 V 2.4 V - 18 V -0.3 V - 0.8 V 2.4 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 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 Vo Rtrimdown = 511 − 10.22 delta Module Trim Rtrimdown Rtrimup = (100 + delta ) ⋅ Vo ⋅ 5.11 − 313 − 10.22 0.6125 ⋅ delta Note: delta = GND (Vo _ req − Vo ) × 100[% ] Vo Vo Rtrimup Module Vo_req=Desired (trimmed) output voltage [V] Trim Vo=1.202 V GND 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] 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick Efficiency Data 90% 90% 85% 80% 18V 24V 48V 75V 75% 70% 65% EFFICIENCY EFFICIENCY 85% 80% 70% 65% 60% 60% 55% 55% 50% 50% 1.80 4.50 9.00 13.50 1.00 18.00 xRSB-40UV2x 5.00 7.50 10.00 xRSB-40U03x 90% 90% 85% 85% 80% 18V 24V 48V 75V 75% 70% 65% EFFICIENCY 80% 70% 65% 60% 55% 55% 50% 18V 24V 48V 75V 75% 60% 0.80 2.50 OUTPUT CURRENT (A) OUTPUT CURRENT (A) EFFICIENCY 18V 24V 48V 75V 75% 50% 2.00 4.00 6.00 OUTPUT CURRENT (A) xRSB-40U05x 8.00 0.35 0.88 1.75 2.63 3.50 OUTPUT CURRENT (A) xRSB-40U12x 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick Thermal Derating Curves Vin=48 Vdc xRSB-40UV2x xRSB-40U03x xRSB-40U05x xRSB-40U12x 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick Thermal Derating Curves (continued) Vin=24 Vdc xRSB-40UV2x xRSB-40U05x xRSB-40U03x xRSB-40U12x 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick Ripple and Noise Waveforms 48 Vdc input, 1.2 Vdc output 48 Vdc input, 3.3 Vdc output 48 Vdc input, 5.0 Vdc output 48 Vdc input, 12 Vdc output Note: Ripple and noise at full load, with a 1 uF ceramic capacioor and a Min Capacitance of Tantalum capacitor 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick Transient Response Waveforms Vout=1.2 V 50% to 25% Load Transients Vout=1.2 V 25% to 50% Load Transients Vout=3.3 V 50% to 25% Load Transients Vout=3.3 V 25% to 50% Load Transients Vout=5.0 V 50% to 25% Load Transients Vout=5.0 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick Transient Response Waveforms (continued) Vout=12 V 50% to 25% Load Transients Vout=12 V 25% to 50% Load Transients Note: Transient Response at Vin=48 V, di/dt=0.1 A/uS, with a 1 uF ceramic capacioor and a Min Capacitance of Tantalum capacitor 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick SMT Package (SRSB-40Uxxx) 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 24 Vdc/48 Vdc Input 1.2 Vdc - 12 Vdc / 18 A - 3.5 A Outputs, 1/16 Brick Through Hole Package (0RSB-40Uxxx) Pin Connections Pin 1 2 3 4 5 6 7 8 Function Vin (+) Remote On/Off Vin (-) Vout (-) Remote 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