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ISOLATED DC/DC CONVERTERS
48 VDC Input 8 VDC/15 A Output, 1/8 Brick
0RCR-15T Series
* * * * * Isolated High Efficiency High Power Density Fixed Frequency Remote On/Off * * * * *
RoHS Compliant
Rev.B
Input Under Voltage Lockout Output Overvoltage Shutdown OCP/SCP Low Cost Thermal Shutdown
Description
The 0RCR-15T Series are isolated DC/DC converters that operate from a nominal 48 VDC source. These converters use a half bridge power train to provide isolation and step down. These units will provide up to 130 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 eighth-brick package.
Part Selection
Output Voltage 8V Input Voltage 36 V-75 V Max. Output Current 15 A Max. Output Power 130 W Typical Efficiency 95% Model Number Active High 0RCR-15T08H Model Number Active Low 0RCR-15T08L
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 Ambient Temperature Storage Temperature Min -0.3 V -0.3 V -40 C -40 C Typ Max 100 V 100 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 36 V -
Typ 2 mA 0.039 A s 34.5 V 32.5 V
2
Max 75 V 3A 45 mA 3 mA N/A N/A 0.062 A s 2
Notes
with simulated source impedance of 10 uH, 5 Hz to 20 MHz; use a 47 uF /100 V electrolytic capacitor with ESR = 1 ohm max. at 200 kHz at 25C.
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 8 VDC/15 A Output, 1/8 Brick
Output Specifications
Parameter Output Voltage Set Point Vin=36 V Vin=48 V Vin=75 V Line Regulation Load Regulation Vin=36 V Vin=48 V Vin=75 V Regulation Over Temperature (-40 C to +85 C) Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (rms) 0A 0.5 V 0.5 V 0.5 V 30mV 20 A 1.3 A s 15 mV
2
Min -
Typ 6V 8V 12.5 V 6.5 V
Max 15 A 2.1A s 20 mV
2
Notes
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 Vin=48 V
0 uF
90 mV 10 mS 0% -
100 mV 3% 3000 uF
Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor and a 15 uF Tantalum capacitor at the output; Vin=48 V.
-
100 mV 120 uS 100 mV 120 uS
150 uS 150 uS Test conditions: di/dt = 0.1 A/ uS, Vin=48 V, with a 15 uF tantalum capacitor at the output.
Note: All specifications are typical at 25 C unless otherwise stated.
General Specifications
Parameter Efficiency Switching Frequency Over Temperature Protection MTBF Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 2.30 x 0.896 x 0.403 58.42 x 22.76 x 10.24 23 g Min 93% 180 kHz Typ 95% 200 kHz 115 C 2,569,594 hours Max 220 kHz Average PCB temperature will not exceed 115 C. Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) Notes Vin=48 V, Io=Iomax
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 8 VDC/15 A Output, 1/8 Brick
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 -0.3 V 2.5 V -0.3 V 2.5 V Typ Max 0.8 V 100 V 0.8 V 100 V Notes 0RCR-15T08L. The remote on/off pin open, Unit on. 0RCR-15T08H. The remote on/off pin open, Unit on.
Efficiency Data
96.00% 95.00% 94.00% 93.00% 92.00% 91.00% 90.00% 89.00% 88.00% 87.00% 86.00% 0.00 5.00 10.00 15.00 OUTPUT CURRENT (A)
EFFICIENCY
36V 48V 75V
Thermal Derating Curve
Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 LFM through 400 LFM with air flowing from input to output (nominal input voltage).
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 8 VDC/15 A Output, 1/8 Brick
Turn-On (Enable)
Transient Response: di/dt=0.1 A/uS, External Load Capacitance Co=15 uF (tantalum capacitor)
50% to 75% and 75% to 50% load Transient at 48 Vdc input and Ta=25 deg C External Load Capacitance: 15 F tantalum capacitor .
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 8 Vdc/15 A Output, 1/8 Brick
Mechanical Ouline
Pin Connections
Pin 1 2 3 4 5 Function Vin+ Remote On/Off VinVoutVout+
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
(c)2008 Bel Fuse Inc. Specifications subject to change without notice. 103108
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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