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| ISOLATED DC/DC CONVERTERS 24 Vdc Input 8 Vdc / 5 A Output 1/16 Brick XRSB-50R08X * * * * * * * Isolated RoHS Compliant * * * * * * * Rev.A Input Under Voltage Lockout Output Over Voltage Shutdown OCP/SCP Over Temperature Protection Remote On/Off (option) Positive/Negative Remote Sense Through Hole and SMT (option) Fixed Frequency (600 kHz) High Efficiency High Power Density Low Cost Output Voltage Trim Basic Insulation Description The XRSB-50R08X series are isolated dc/dc converters that operate from a nominal 24 Vdc source. These units will provide up to 40 W of output power from a nominal 24 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 8V Input Voltage 18 V - 36 V Max. Output Current 5A Max. Output Power 40 W Typical Efficiency 90% Model Number Active Low xRSB-50R08L Model Number Active High xRSB-50R080 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 -40 C -55 C Typ Max 40 V 18 V 1500 V 85 C 125 C Notes Input Specifications Parameter Input Voltage Input Current (full load) Input Current (no load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) I t Inrush Current Transient Turn On Voltage Threshold Turn Off Voltage Threshold 2 Min 18 V - Typ 24 V 80 mA 1 mA 20 mA 3 mA 0.01 A s 17 V 16 V 2 Max 36 V 3.5 A 160 mA 3 mA 50 mA 7 mA 0.02 A s 2 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. 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 Input 8 Vdc / 5 A Output 1/16 Brick Output Specifications Parameter Output Voltage Set Point Line Regulation Load Regulation Regulation Over Temperature(-40 C to +85 C) Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (rms) Min 7.88 V 0A 6A Typ 8V 5 mV 5 mV 20 mV 7.5 A 0.5 A s 10 mV 2 Max 8.12 V 10 mV 10 mV 35 mV 5A 9A 1A s 20 mV 2 Notes Vin=24 V; Io=50% load Ripple and Noise (pk-pk) Turn on Time Overshoot at Turn on Output Capacitance Transient Response 25% ~ 50% Max Load 50% ~ 25% Max Load Overshoot Settling Time Overshoot Settling Time Vo=8 V 100 uF 40 mV 24 mS 0% - 75 mV 50 mS 5% 680 uF Tested at 0-20 MHz BW, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output. - 150 mV 120 uS 150 mV 120 uS 250 mV 250 uS 250 mV 250 uS Test conditions: di/dt = 0.1 A/uS, Vin=24 V, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output. Note: All specifications are typical at nominal input, full load at 25 C unless otherwise stated. General Specifications Parameter Efficiency Switching Frequency Isolation Capacitance Output Voltage Trim Range Over Temperature Protection Over Voltage Protection MTBF Dimensions Inches (L x W x H) Millimeters (L x W x H) Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 1.3 x 0.9 x 0.334 33.0 x 22.9 x 8.49 1.3 x 0.9 x 0.378 33.0 x 22.9 x 9.60 13 g SMT Package Min 87% 540 kHz 90% Vo 120 C Typ 90% 600 kHz 3900 pF 130% Vo TBD Max 660 kHz 110% Vo 140 C 140% Vo Test conditions: Vin=24 V, full load and short the feedback optocoupler. Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) Notes Vin=24 V; Io=Io, max; full load Through Hole Package 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 24 Vdc Input 8 Vdc / 5 A Output 1/16 Brick Control Specifications Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Signal Low (Unit Off) Signal High (Unit On) Current Sink Active Low -0.3 V 2.95 V -0.3 V 2.95 V 0 mA 0.8 V 18 V 0.8 V 18 V 1 mA When Remote On/Off pin is open, for active low option, unit is off; for active high option, unit is on Min Typ Max Notes Active High - Output Trim Equations Equations for calculating the trim resistor are shown below. 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. Vout Rtrimdown = 511 - 10.22[k] delta Module Trim GND Rtrimdown Rtrimup = (100 + delta) Vo 5.11 - 626 - 10.22[k] 1.225 delta Vout Module Trim GND Rtrimup Note delta = (Vo _ req - Vo ) x 100 [% ] Vo Vo_req=Desired (trimmed) output voltage[V] Output voltage Vo=8.003 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 Input 8 Vdc / 5 A Output 1/16 Brick Efficiency Data 90% 85% EFFICIENCY 80% 75% 70% 65% 60% 55% 50% 0.5A 1.25A 2.5A 3.75A 5A OUTPUT CURRENT (A) 18V 24V 36V Thermal Derating Curve 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 Input 8 Vdc / 5 A Output 1/16 Brick Ripple and Noise Waveform 24 Vdc input, 1.2 V output Note: Ripple and noise at full load, with a 1uF ceramic cap and a 100 uF Tantalum cap at output, Ta=25 deg C. Transient Response Waveforms Vout=8.0 V 50% to 25% Load Transients Vout=8.0 V 25% to 50% Load Transients Note: Transient Response at Vin=48 V, di/dt=0.1A/uS, external 100 uF Tantalum cap and 1uF Ceramic cap, 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 Input 8 Vdc / 5 A Output 1/16 Brick Mechanical Outline SMT Package Pin Connections Pin 1 2 3 4 5 6 7 8 Function Vin (+) Remote On/Off Vin (-) VoutRemote Sense (-) Trim Remote Sense (+) 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 Input 8 Vdc / 5 A Output 1/16 Brick 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. (c)2007 Bel Fuse Inc. Specifications subject to change without notice. 012907 CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com FAR EAST 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 EUROPE 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 |
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