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ISOLATED DC/DC CONVERTERS
48 Vdc Input, 1.2 Vdc - 12 Vdc / 15 A - 3 A Outputs, 1/16 Brick Converter
XRSB-30T Series
* 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 (550 kHz) * High Efficiency * High Power Density * Low Cost * Output Voltage Trim * Basic Insulation * UL60950-1 Recognized (UL/cUL)
Description
The XRSB-30T series are isolated dc/dc converters that operate from a nominal 48 Vdc source. These units will provide up to 30 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 Vdc 1.5 Vdc 1.8 Vdc 2.5 Vdc 3.3 Vdc 5.0 Vdc 12 Vdc Input Voltage 36 Vdc - 75 Vdc 36 Vdc - 75 Vdc 36 Vdc - 75 Vdc 36 Vdc - 75 Vdc 36 Vdc - 75 Vdc 36 Vdc - 75 Vdc 36 Vdc - 75 Vdc Max. Output Current 15 A 13 A 13 A 10 A 10 A 7A 3A Max. Output Power 18 W 19.5 W 23 W 25 W 30 W 35 W 36 W Typical Efficiency 84% 86% 86% 89% 90% 90% 89% Model Number Active Low XRSB-30TV2L XRSB-30TV5L XRSB-30TV8L XRSB-30T02L XRSB-30T03L XRSB-30T05L XRSB-30T12L Model Number Active High XRSB-30TV20 XRSB-30TV50 XRSB-30TV80 XRSB-30T025 XRSB-30T033 XRSB-30T050 XRSB-30T120
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) Input Voltage Transient (100 ms) Remote On/Off I/O Isolation Voltage Ambient Temperature Storage Temperature Min -0.3 V -0.3 V -0.3 V -40 C -55 C Typ Max 80 V 100 V 18 V 1500 V 85 C 125 C 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
48 Vdc Input, 1.2 Vdc - 12 Vdc / 15 A - 3 A Outputs, 1/16 Brick Converter
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 31 V 28 V
Typ 48 V 30 mA 2 mA 20 mA 3 mA 0.01 A s 33 V 32 V
2
Max 75 V 1.6 A 120 mA 6 mA 50 mA 7 mA 0.02 A s 35 V 35 V
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.
Output Specifications
Parameter 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 Vo=1.2 - 1.8 V Vo=2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V Load Regulation Vo=1.2 - 2.5 V Vo=3.3 - 5.0 V Vo=12 V Regulation Over Temperature (-40 C to +85 C) Vo=1.2 - 1.8 V Vo=2.5 - 3.3 V Vo=5.0 V Vo=12 V 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 0A 0A 0A 0A 0A 0A 0A 15 A 13 A 13 A 10 A 10 A 7A 3A Min 1.182 V 1.478 V 1.773 V 2.463 V 3.250 V 4.900 V 11.750 V Typ 1.2 V 1.5 V 1.8 V 2.5 V 3.3 V 5.0 V 12.0 V 0.5 mV 2.0 mV 3.0 mV 4.0 mV 6.0 mV 3 mV 4 mV 5 mV Max 1.218 V 1.523 V 1.827 V 2.538 V 3.350 V 5.100 V 12.250 V 3 mV 6 mV 8 mV 9 mV 20 mV 5 mV 9 mV 10 mV Notes
Test conditions: Vin=48 V; Io=50% load
-
7 mV 9 mV 15 mV 20 mV
15 mV 16 mV 30 mV 35 mV
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 / 15 A - 3 A Outputs, 1/16 Brick Converter
Output Specifications (continued)
Parameter Current Limit Threshold 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) Vo=1.2 - 2.5 V Vo=3.3 V Vo=5.0 - 12 V Ripple and Noise (pk-pk) Vo=1.2 - 2.5 V Vo=3.3 V Vo=5.0 V Vo=12 V Turn on Time Overshoot at Turn on Output Capacitance Vo=1.2 - 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 Overshoot 25% ~ 50% Max Load Settling Time Overshoot 50% ~ 25% Max Load Settling Time 220 uF 220 uF 220 uF 0 uF 0 uF 0 uF 40 mV 65 mV 90 mV 80 mV 35 mS 0% 100 mV 100 uS 100 mV 100 uS 150 mV 120 uS 150 mV 120 uS 200 mV 100 uS 200 mV 100 uS 200 mV 200 uS 200 mV 200 uS 350 mV 200 uS 350 mV 200 uS 270 mV 110 uS 270 mV 110 uS 70 mV 110 mV 150 mV 140 mV 70 mS 5% 15000 uF 10000 uF 6800 uF 4700 uF 2200 uF 330 uF 150 mV 150 uS 150 mV 150 uS 200 mV 200 uS 200 mV 200 uS 300 mV 150 uS 300 mV 150 uS 350 mV 350 uS 350 mV 350 uS 500 mV 350 uS 500 mV 350 uS 450 mV 200 uS 450 mV 200 uS 10 mV 15 mV 30 mV 20 mV 30 mV 55 mV Tested at 0-20 MHz BW, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output. Min 18 A 14 A 14 A 11 A 10.5 A 7.5 A 3.5 A Typ 24 A 20 A 19 A 16 A 15.5 A 9.5 A 4.5 A 2 0.5 A s Max 30 A 26 A 24 A 21 A 25 A 14 A 6A 2 1A s Notes
Vo=1.2 V
Vo=1.5 - 1.8 V
Vo=2.5 V
Vo=3.3 V
Test conditions: di/dt = 0.1 A/uS, Vin=48 V, with a 1uF ceramic capacitor and a 10 uF Tantalum capacitor at the output.
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 / 15 A - 3 A Outputs, 1/16 Brick Converter Note: All specifications are typical at nominal input, full load at 25 C unless otherwise stated.
General Specifications
Parameter Efficiency Vo=1.2 V Vo=1.5 V Vo=1.8 V Vo=2.5 V Vo=3.3 - 5.0 V Vo=12 V 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 0.364 33.02 x 22.86 x 9.24 1.3 x 0.9 x 0.378 33.02 x 22.86 x 9.60 13 g SMT Package 81% 83% 83% 84% 87% 86% 500 kHz 90% Vo 120 C 84% 86% 86% 87% 90% 89% 550 kHz 3900 pF 130% Vo TBD 600 kHz 110% Vo 140 C 160% Vo Test conditions: Vin=48 V, full load and short the feedback optocoupler. Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) Vin=48 V, full load Min Typ Max Notes
Through Hole Package
Note: All specifications are typical at 25 C unless otherwise stated.
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 High 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
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 / 15 A - 3 A Outputs, 1/16 Brick Converter
Output Trim Equations
Equations for calculating the trim resistor are shown below (Unit: k). 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 Rtrimdown
Rtrimup =
Note:
(100 + delta ) Vo 5.11 - 313 - 10.22 0.6125 delta
Vout
delta =
(Vo _ req - Vo ) x 100[% ]
Vo
Module
Trim GND
Rtrimup
Vo_req=Desired (trimmed) output voltage [V] Vo=1.202 V
2) Trim Equations for Vo=1.5 V - 12 V
Rtrimdown =
511 - 10.22 delta
Rtrimup =
Note:
(100 + delta ) Vo 5.11 - 626 - 10.22 1.225 delta
delta =
(Vo _ req - Vo ) x 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 / 15 A - 3 A Outputs, 1/16 Brick Converter
Efficiency Data
90% 85% EFFICIENCY
EFFICIENCY
90% 85% 80% 75% 70% 65% 60% 55% 50% 1.3A 3.25A 6.5A 9.75A 13A 36V 48V 75V
80% 75% 70% 65% 60% 55% 50% 1.5A 3.75A 7.5A 11.25A 15A OUTPUT CURRENT (A) 36V 48V 75V
OUTPUT CURRENT (A)
Vo=1.2 V
Vo=1.5 V
90% 85% EFFICIENCY 36V 48V 75V
EFFICIENCY
90% 85% 80% 75% 70% 65% 60% 55% 50% 36V 48V 75V
80% 75% 70% 65% 60% 55% 50% 1.3A 3.25A 6.5A 9.75A 13A OUTPUT CURRENT (A)
1.8A
4.5A
9A
12.A
18A
OUTPUT CURRENT (A)
Vo=1.8 V
90% 85% EFFICIENCY 80% 75% 70% 65% 60% 55% 50%
Vo=2.5 V
90% 85% EFFICIENCY 80% 75% 70% 65% 60% 55% 50% 1A 2.5A 5A 7.5A 10A OUTPUT CURRENT (A) 36V 48V 75V
36V 48V 75V
0.7A
1.75A
3.5A
5.25A
7A
OUTPUT CURRENT (A)
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 / 15 A - 3 A Outputs, 1/16 Brick Converter Vo=3.3 V Vo=5.0 V
Efficiency Data (continued)
90% 85% EFFICIENCY 80% 75% 70% 65% 60% 55% 50% 0.3A 0.75A 1.5A 2.25A 3A OUTPUT CURRENT (A) 36V 48V 75V
Vo=12 V
Thermal Derating Curves
Vin=48 V, Vo=1.2 V
Vin=48 V, Vo=1.5 V
Vin=48 V, Vo=1.8 V
Vin=48 V, Vo=2.5 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 / 15 A - 3 A Outputs, 1/16 Brick Converter
Thermal Derating Curves (continued)
Vin=48 V, Vo=3.3 V
Vin=48 V, Vo=5.0 V
Vin=48 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 / 15 A - 3 A Outputs, 1/16 Brick Converter
Ripple and Noise Waveforms
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 Note: Ripple and noise at full load, 48 V input, with a 1 uF ceramic capacitor and a 10 uF tantalum cap at the output, and 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
48 Vdc Input, 1.2 Vdc - 12 Vdc / 15 A - 3 A Outputs, 1/16 Brick Converter
Transient Response Waveforms
Vo=1.2 V 50% to 25% Load Transients
Vo=1.2 V 25% to 50% Load Transients
Vo=1.5 V 50% to 25% Load Transients
Vo=1.5 V 25% to 50% Load Transients
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
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 / 15 A - 3 A Outputs, 1/16 Brick Converter
Transient Response Waveforms (continued)
Vo=3.3 V 50% to 25% Load Transients
Vo=3.3 V 25% to 50% Load Transients
Vo=5.0 V 50% to 25% Load Transients
Vo=5.0 V 25% to 50% Load Transients
Vo=12 V 50% to 25% Load Transients
Vo=12 V 25% to 50% Load Transients
Note: Transient Response at Vin=48 V, di/dt=0.1A/uS, with external 220 uF tantalum capacitor and 1 uF ceramic capacitor, and 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
48 Vdc Input, 1.2 Vdc - 12 Vdc / 15 A - 3 A Outputs, 1/16 Brick Converter
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
48 Vdc Input, 1.2 Vdc - 12 Vdc / 15 A - 3 A Outputs, 1/16 Brick Converter
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.
(c)2008 Bel Fuse Inc. Specifications subject to change without notice. 022708
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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