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ISOLATED DC/DC CONVERTERS
48 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
0RHB-D0T Series
* * * * * * * * Isolated High Efficiency High Power Density Low Cost
RoHS Compliant
* * * * * * * *
PRELIMINARY
Output Over Voltage Shutdown OCP/SCP Over Temperature Protection Remote On/Off Output Voltage Trim Positive/Negative Remote Sense Remote On/Off Logic (option) UL60950 Recognized(UL/cUL)
Input Under Voltage Lockout Fixed frequency (330 kHz) Basic Isolation Input Over Voltage Lockout
Description
The 0RHB-D0T Series are isolated dc/dc converters that operate from a nominal 48 V source. These units provide up to 200 W of output power from a nominal 48 V 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 half-brick package.
Part Selection
Output Voltage 12.0 V 5.0 V 3.3 V 2.5 V 1.8 V 1.5 V 1.2 V Input Voltage 36 V - 75 V 36 V - 75 V 36 V - 75 V 36 V - 75 V 36 V - 75 V 36 V - 75 V 36 V - 75 V Max. Output Current 20 A 48 A 70 A 80 A 80 A 80 A 80 A Max. Output Power 240 W 240 W 231 W 200 W 144 W 120 W 96 W Typical Efficiency 94% 92.5% 92% 91% 89% 87% 85% Model Number Active High 0RHB-D0T120 0RHB-D0T050 0RHB-D0T033 0RHB-D0T025 0RHB-D0TV80 0RHB-D0TV50 0RHB-D0TV20 Model Number Active Low 0RHB-D0T12L 0RHB-D0T05L 0RHB-D0T03L 0RHB-D0T02L 0RHB-D0TV8L 0RHB-D0TV5L 0RHB-D0TV2L
Note: Add "G" suffix at the end of the model number to indicate Tray Packaging.
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 80 V 18 V 2000 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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Input Specifications
Parameter Input Voltage Input Current (full load) Vo=12.0 V Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V 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 Input Over Voltage Lockout
2
Min 36 V 32 V 30 V 76 V
Typ 48 V 120 mA 5 mA 20 mA 5 mA 0.05 A s 34 V 32 V 78 V
2
Max 75 V 7.5 A 7.5 A 7.3 A 6.4 A 4.7 A 4.0 A 3.3 A 180 mA 10 mA 40 mA 10 mA 0.1 A s 35 V 34 V 80 V
2
Notes
Tested with simulated source impedance of 10 uH, 5 Hz to 20 MHz; use a 100 uF/100 V electrolytic capacitor with ESR = 1 ohm max. at 200 kHz at 25 C.
Output Specifications
Parameter Output Voltage Set Point VO=12.0 V VO=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Line Regulation VO=12.0 V VO=5.0 V VO=3.3 V Vo=1.2 V - 2.5 V Load Regulation VO=12.0 V VO=5.0 V VO=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Regulation Over Temperature (-40 C to +85 C) VO=12.0 V VO=5.0 V VO=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Min 11.760 V 4.925 V 3.250 V 2.462 V 1.773 V 1.477 V 1.176 V Typ 12.000 V 5.000 V 3.300 V 2.500 V 1.800 V 1.500 V 1.200 V 12 mV 5 mV 3 mV 3 mV 30 mV 10 mV 7 mV 6 mV 5 mV 4 mV 3 mV 60 mV 45 mV 30 mV 25 mV 20 mV 20 mV 15 mV Max 12.240 V 5.075 V 3.350 V 2.538 V 1.827 V 1.523 V 1.224 V 24 mV 10 mV 7 mV 6 mV 60 mV 20 mV 15 mV 13 mV 9 mV 8 mV 6 mV 100 mV 75 mV 50 mV 45 mV 40 mV 35 mV 30 mV Notes
Vin=48 V, Io=50% full load, Ta=25 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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Output Specifications (continued)
Parameter Output Current VO=12.0 V VO=5.0 V Vo=3.3 V Vo=1.2 V - 2.5 V Current Limit Threshold VO=12.0 V VO=5.0 V Vo=3.3 V Vo=1.2 V - 2.5 V Short Circuit Surge Transient Ripple and Noise (rms) VO=12.0 V VO=5.0 V Vo=3.3 V Vo=1.2 V - 2.5 V Ripple and Noise (pk-pk) VO=12.0 V VO=5.0 V Vo=3.3 V Vo=1.2 V - 2.5 V Turn on Time VO=5.0 V - 12.0 V Vo=3.3 V Vo=1.2 V - 2.5 V Overshoot at Turn on Output Capacitance VO=12.0 V VO=5.0 V Vo=1.2 V - 3.3 V Transient Response 50% ~ 75% Max Load 75% ~ 50% Max Load 50% ~ 75% Max Load 75% ~ 50% Max Load 50% ~ 75% Max Load 75% ~ 50% Max Load 50% ~ 75% Max Load 75% ~ 50% Max Load Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time Overshoot Settling Time VO=1.2 V - 2.5 V VO=3.3 V VO=5.0 V VO=12.0 V 600 mV 300 uS 600 mV 300 uS 250 mV 250 uS 250 mV 250 uS 150 mV 200 uS 150 mV 200 uS 100 mV 200 uS 100 mV 200 uS 800 mV 500 uS 800 mV 500 uS 400 mV 400 uS 400 mV 400 uS 200 mV 300 uS 200 mV 300 uS 200 mV 300 uS 200 mV 300 uS Test conditions: di/dt = 0.1 A/uS, Vin=48 V, Ta=25 C with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output. 10 mS 8 mS 5 mS 0 uF 0 uF 0 uF 0% 30 mS 20 mS 15 mS 5% 2200 uF 10000 uF 20000 uF 100 mV 80 mV 55 mV 40 mV 150 mV 150 mV 100 mV 80 mV 30 mV 25 mV 20 mV 15 mV 50 mV 50 mV 40 mV 30 mV Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output. 21 A 50 A 74 A 86 A 25 A 58 A 84 A 96 A 2 3A s 30 A 66 A 94 A 106 A 2 5A s 0A 0A 0A 0A 20 A 48 A 70 A 80 A Min Typ Max Notes
Note: All specifications are typical at nominal input, full load at 25 C unless noted.
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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
General Specifications
Parameter Efficiency VO=12.0 V VO=5.0 V VO=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Switching Frequency Isolation capacitance Remote Sense Compesation Output Voltage Trim Range Over Temperature Protection Over Voltage Protection MTBF Dimensions Inches millimeters Weight 2.28 x 2.4 x 0.42 57.51 x 60.98 x 10.67 76 g 91% 89% 89% 88% 86% 84% 82% 280 kHz 80% Vo 94% 92.5% 92% 91% 89% 87% 85% 330 kHz 1500 pF 125 C 130% Vo TBD 380 kHz 10% Vo 110% Vo Vin=48V, full load, Hiccup mode Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) The total voltage increased by trim and remote sense should not exceed 10%Vo. Min Typ Max Notes
Vin=48 V, full load , Ta=25 C
Note: All specifications are typical at nominal input, full load at 25 C unless noted.
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 2.4 V -0.3 V 2.4 V 0 mA 0.8 V 18 V 0.8 V 18 V 0.75 mA 0RHB-D0TxxL. The remote on/off pin open, Unit off. 0RHB-D0Txx0. The remote on/off pin open, Unit on. Min Typ Max Notes
Active High
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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Output Trim Equations
Equations for calculating the trim resistor (in k) 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.
Rtrimdown =
1.5 V-12 V:
100 -2 delta
Module
Vout Trim GND
Vout Module Trim GND Rtrimup
Rtrimup =
1.2 V:
(100 + delta ) Vo - 122.5 -2 1.225 delta
(100 + delta ) Vo - 61.25 -2 0.6125 delta
Rtrimdown
Rtrimup =
Notes:
delta =
(Vo _ req - Vo ) x100[%]
Vo
Vo_req=Desired(trimmed) output voltage[V] Output voltage Vo=3.308 V for 3.3 V output; Vo=5.000 V for 5.0 V; Vo=12.000 V for 12 V output
Efficiency Data
Efficiency Curve 94% Efficiency
Efficiency 94% Efficiency Curve
91% 88% 85% 82% 79% 3 5 8 10 13 15 18 20 Output Current (A)
36 V 48 V 75 V
91% 88% 85% 82% 79% 76% 5 10 15 20 25 30 35 40 45 48 Output Current (A)
36 V 48 V 75 V
0RHB-D0T12x
Efficiency Curve 94% 91% Efficiency 88% 85% 82% 79% 76% 10 20 30 40 50 Output Current (A) 60 70 36 V 48 V 75 V
94% 91% Efficiency 88% 85% 82% 79% 76% 73% 10 20
0RHB-D0T05x
Efficiency Curve
36 V 48 V 75 V
30
40
50
60
70
80
Output Current (A)
0RHB-D0T03x
0RHB-D0T02x
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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Efficiency Data (continued)
Efficiency Curve
Efficiency Curve 90% 87% 84% 81% 78% 75% 72% 69% 10 20 30 40 50 60 70 80 Output Current (A)
92% 89% 86% 83% 80% 77% 74% 71% 10 20 30 40 50 60 70 80 Output Current (A)
Efficiency
0RHB-D0TV8x
Efficiency
36 V 48 V 75 V
36 V 48 V 75 V
0RHB-D0TV5x
Efficiency Curve 88% 85% 82% 79% 76% 73% 70% 67% 64% 61% 10 20 30 40 50 60 70 80 Output Current (A)
Efficiency
36 V 48 V 75 V
0RHB-D0TV2x
Thermal Derating Curves
0RHB-D0Txxx
0RHB-D0T12x
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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Thermal Derating Curves (continued)
0RHB-D0T05x
0RHB-D0T03x
0RHB-D0T02x
0RHB-D0TV8x
0RHB-D0TV5x
0RHB-D0TV2x
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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Ripple and Noise Waveforms
48 Vdc input, 12 Vdc/20 A output
48 Vdc input, 5 Vdc/48 A output
48 Vdc input, 3.3 Vdc/70 A output
48 Vdc input, 2.5 Vdc/80 A output
48 Vdc input, 1.8 Vdc/80 A output
48 Vdc input, 1.5 Vdc/80 A output
48 Vdc input, 1.2 Vdc/80 A output Note: Ripple and noise at full load, with a 1uF ceramic cap and a 10 uF Tantalum cap at 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
48 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Transient Response Waveforms
Vout=12 V, 50% to 75% Load Transients
Vout=12 V, 75% to 50% Load Transients
Vout=5 V, 50% to 75% Load Transients
Vout=5 V, 75% to 50% Load Transients
Vout=3.3 V, 50% to 75% Load Transients
Vout=3.3 V, 75% 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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Transient Response Waveforms (continued)
Vout=2.5 V, 50% to 75% Load Transients
Vout=2.5 V, 75% to 50% Load Transients
Vout=1.8 V, 50% to 75% Load Transients
Vout=1.8 V, 75% to 50% Load Transients
Vout=1.5 V, 50% to 75% Load Transients
Vout=1.5 V, 75% 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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Transient Response Waveforms (continued)
Vout=1.2 V, 50% to 75% Load Transients
Vout=1.2 V, 75% to 50% Load Transients
Note: Transient Response at di/dt=0.1 A/us, Vin=48 Vdc, Ta=25 C, with a 1 F ceramic capacitor and a 10 uF Tantalum cap at output.
Mechanical Outline
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 V Input 1.2 V - 2.5 V/80 A, 3.3 V/70 A, 5 V/48 A, 12 V/20 A Output
Mechanical Outline (continued)
Pin Connections
pin# 1 2 3 4 5 6 function -Input N/A On/Off +Input +Output +Output 0.04" 0.04" 0.08" 0.08" pin size 0.04" pin# 7 8 9 10 11 function +Sense Trim -Sense -Output -Output pin size 0.04" 0.04" 0.04" 0.08" 0.08"
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
(c)2006 Bel Fuse Inc. Specifications subject to change without notice. 040706
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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