BEL XRP2

NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jan. 21, 2010
xRP2-50E1Ax
RoHS Compliant
Rev.H
Features


Non-Isolated
Output Over-Voltage Shutdown

High Efficiency

OCP/SCP

Fixed Switching Frequency

Low Output Ripple

Low Cost

Power Good Signal

Excellent Thermal Performance

Remote On/Off

Wide Input Voltage Range

Wide Output Trim Range
Applications

Networking

Computers and peripherals

Telecommunications
Description
The xRP2-50E1Ax is a non-isolated dc/dc converter that operates over a wide range of input voltage (Vin = 5
Vdc - 13.8 Vdc). This unit can provide a precisely regulated output voltage from 0.6 Vdc to 5.0 Vdc and can
deliver up to 50 A of output current. This unit is designed to be highly efficient and low cost. The converter is
provided in an industry standard package.
Part Selection
Output
Voltage
Input
Voltage
Max. Output
Current
Max. Output
Power
Part Number
Horizontal Mount
Part Number
Vertical Mount
250 W
Typical Efficiency
(Vo=1.8 Vdc)
86%
0.6 V - 5.0 V
5.0 V - 13.8 V
50 A
0RP2-50E1A0
VRP2-50E1A0
0.6 V - 5.0 V
5.0 V - 13.8 V
50 A
250 W
86%
0RP2-50E1A1
VRP2-50E1A1
Note: Add “G” suffix at the end of the model numbers listed above to indicate “Tray Packaging”.
Part Number Explanation
x R P2 – 50 E 1A x
1 2
3
4
5
6 7
1---Using “0” means horizontal mount, and using “V” means Vertical mount
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name (SIP)
4---Series code (output current 50A)
5---Input range (5-13.8V)
6---Output voltage (0.6-5.0V)
7---Suffix, “0” means model has a trim resistor equation
“1” means model has a trim voltage equation
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jan. 21, 2010
Absolute Maximum Ratings
Min
Typ
Max
Input Voltage (continuous)
Parameter
-0.3 V
-
15 V
Output Enable Terminal Voltage
-0.3 V
-
15 V
Ambient Temperature
0 C
-
70 C
Storage Temperature
-55 C
-
125 C
Min
Typ
Max
5V
1.8*Vo
12 V
12 V
13.8 V
13.8 V
Input Current (full load)
-
-
38 A
Input Reflected Ripple Current (pk-pk)
-
35 mA
-
Input Reflected Ripple Current (rms)
-
10 mA
-
I t Inrush Current Transient
-
-
1A s
Turn-on Voltage Threshold
4.4 V
4.6 V
4.8 V
Under Voltage Threshold
4.0 V
4.3 V
4.6 V
Notes
Input Specifications
Parameter
Notes
Input Voltage
Vo≤ 2.8 V
Vo > 2.8 V
2
With simulated source impedance of
1 uH, 5 Hz to 20 MHz. Use a 1000
uF/16 V electrolytic capacitor with
ESR=0.1 ohm max, at 100 kHz at
25°C.
2
Note: All specifications are typical at 25 C unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point Accuracy
Vo≥1 V
Vo<1 V
Load Regulation
Vo≥2.5 V
Vo<2.5 V
Line Regulation
Vo≥2.5 V
Vo<2.5 V
Regulation Over Temperature
(0 C to +70 C)
Output Current
Current Limit Threshold
Output Ripple and Noise (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.5 V
Vo=1.0 V
Vo=0.6 V
Min
Typ
Max
-1.5 % Vo
-10 mV
-
+1.5 % Vo
+10 mV
-
-
0.6% Vo
12 mV
-
-
0.3% Vo
9 mV
-
-
0.02% Vo/C
0A
-
50 A
105% Io
130% Io
180% Io
-
-
110 mV
100 mV
100 mV
80 mV
60 mV
60 mV
Notes
Vin=Vinmin, Io=Iomax
Test conditions:
0-20MHz BW, with a 1µF
ceramic capacitor and a 10 uF
Tantalum cap at output.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jan. 21, 2010
Output Specifications (continued)
Parameter
Output Ripple and Noise (rms)
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.5 V
Vo=1.0 V
Vo=0.6 V
Min
Typ
Max
-
-
35 mV
35 mV
35 mV
30 mV
25 mV
25 mV
Turn On Time
-
-
10 mS
Rise Time
-
-
3 mS
Overshoot at Turn on and off
-
-
0.5%
0 uF
-
4700 uF
Output Capacitance
ESR≥1 mΩ
Notes
Test conditions:
0-20MHz BW, with a 1µF
ceramic capacitor and a 10 uF
Tantalum cap at output.
Transient Response
50% ~ 100% Max Load
Settling Time
VO=All
100% ~ 50% Max Load
Settling Time
-
-
300 mV
-
-
100 uS
-
-
300 mV
-
-
100 uS
Test conditions:
di/dt = 10 A/uS; Vin =12 V;
Co=0 uF.
Note: All specifications are typical at nominal input, full load at 25°C unless noted.
General Specifications
Parameter
Min
Typ
Max
-
93%
91%
88%
86%
84%
82%
75%
68%
330 kHz
-
0.6 V
-
5V
110% Vo,set
115%Vo,set
130%Vo,set
Notes
Efficiency
Vo=5.0 V
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=1.0 V
Vo=0.6 V
Switching Frequency
Output Voltage Trim Range
Over Voltage Protection
MTBF
1.45 x 1.1 x 0.783
36.83 x 27.94 x 19.9
Dimensions (vertical mount)
Inches (L × W × H)
Millimeters (L × W × H)
1.45 x 1.1 x 0.743
36.83 x 27.94 x 18.87
Weight
-
28.5 g
Vin=12 V, Io=full load.
Calculated Per Bell Core SR332 (IO =40 A, Vo=1.92 V;
Vin=12 V; Ta = 25 C, 100LFM
forced air flow.)
3,361,100 hours
Dimensions (horizontal mount)
Inches (L × W × H)
Millimeters (L × W × H)
Trim pin is open, Vo = 0.6 V.
-
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
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jan. 21, 2010
Control Specifications
Parameter
Min
Typ
Max
Notes
Signal Low (Unit Off)
-0.3 V
-
0.8 V
Signal High (Unit On)
2V
-
Vin,max
Current Source/Sink
0 mA
-
3.3 mA
Remote On/Off (Active High)
Remote On/Off pin is open, unit is off.
PwGood (PowerGood)
PwGood = High = Power
Good
2.4 V
-
5.25 V
-
-
2 mA
PwGood = Low = Power
Not Good
0V
-
0.4 V
-
-
4 mA
Output Trim Equation
xRP2-50E1A0--- Trim resistor equation
R trim
1 .2

( K )
Vo  0 . 6
Vout
Module
Trim+
Rtrim
Trim–
xRP2-50E1A1--- Trim voltage equation
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jan. 21, 2010
Efficiency Data
Efficiency Curve Vo=1.2 V
85.0%
95.0%
80.0%
90.0%
75.0%
5V
12 V
70.0%
65.0%
Efficiency
Efficiency
Efficiency Curve Vo=0.6 V
13.8 V
60.0%
12 V
75.0%
13.8 V
65.0%
50.0%
60.0%
5
12.5
25
37.5
50
5
12.5
25
37.5
Output Current (A)
Output Current (A)
Efficiency Curve Vo=1.8 V
Efficiency Curve Vo=2.5 V
95.0%
100.0%
90.0%
95.0%
85.0%
5V
12 V
80.0%
75.0%
Efficiency
Efficiency
5V
80.0%
70.0%
55.0%
13.8 V
50
90.0%
5V
85.0%
12 V
80.0%
70.0%
75.0%
65.0%
70.0%
13.8 V
65.0%
60.0%
5
12.5
25
37.5
50
5
12.5
25
37.5
Output Current (A)
Output Current (A)
Efficiency Curve Vo=3.3 V
Efficiency Curve Vo=5.0 V
100.0%
100.0%
95.0%
95.0%
90.0%
6V
85.0%
12 V
80.0%
Efficiency
Efficiency
85.0%
50
90.0%
9V
85.0%
12 V
80.0%
13.8 V
13.8 V
75.0%
75.0%
70.0%
70.0%
65.0%
65.0%
5
12.5
25
37.5
Output Current (A)
50
5
12.5
25
37.5
50
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
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
Jan. 21, 2010
0.6 Vdc - 5.0 Vdc/50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Thermal Derating Curves
The thermal reference point Tref is shown above. For reliable operation this temperature should not exceed
115C. The output power of the module should not exceed the rated power for the module.
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jan. 21, 2010
Thermal Derating Curves (continued)
Vin=12 V, Vo=0.6 V
Vin=12 V, Vo=1.8 V
Vin=12 V, Vo=3.3 V
Vin=12 V, Vo=1.2 V
Vin=12 V, Vo=2.5 V
Vin=12 V, Vo=5.0 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Jan. 21, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Ripple and Noise Waveforms
12 Vdc input, 0.6 Vdc/50 A output
12 Vdc input, 1.2 Vdc/50 A output
12 Vdc input, 1.8 Vdc/50 A output
12 Vdc input, 2.5 Vdc/50 A output
12 Vdc input, 3.3 Vdc/50 A output
12 Vdc input, 5.0 Vdc/50 A output
Note: Ripple and noise at full load, 0-20 MHz BW, with a 10 uF and a 1uF ceramic 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
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Jan. 21, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Transient Response Waveforms
Vout= 0.6 V 0%-50% Load Transient
Vout=0.6 V 50%-0% Load Transient
Vout=1.2 V 0%-50% Load Transient
Vout=1.2 V 50%-0% Load Transient
Vout=1.8 V 0%-50% Load Transient
Vout=1.8 V 50%-0% Load Transient
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Jan. 21, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Transient Response Waveforms (continued)
Vout= 2.5 V 0%-50% Load Transient
Vout=2.5 V 50%-0% Load Transient
Vout=3.3 V 0%-50% Load Transient
Vout=3.3 V 50%-0% Load Transient
Vout=5 V 0%-50% Load Transient
Vout=5 V 50%-0% Load Transient
Note: Transient response at di/dt = 10 A/uS, with extemal electrolytic cap 4700 uF, 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
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
Jan. 21, 2010
0.6 Vdc - 5.0 Vdc/50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mechanical Outline
0RP2-50E1Ax
Pin Connections
Pin
Function
Pin
Function
1
2
3
4
5
6
7
8
Vout
Vout
Vout
9
10
11
12
13
14
15
PwGOOD
SenseSense+
Vin
Vin
GND
GND
GND
GND
Enable
TrimTrim+
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Jan. 21, 2010
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mechanical Outline (continued)
VRP2-50E1Ax
Pin Connections
Pin
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Function
Vout
Vout
Vout
GND
GND
Enable
TrimTrim+
PwGOOD
SenseSense+
Vin
Vin
GND
GND
Note: This module is recommended and compatible with Pb-Free Wave Soldering and must be soldered
using a peak solder temperature of no more than 260 ºC for less than 5 seconds.
Note:
1) All Pins: Material - Copper Alloy;
Finish – 3 micro inches minimum Gold over 50 micro inches minimum Nickel plate.
2) Undimensioned components are shown for visual reference only.
3) All dimensions in inches (mm); Tolerances: x.xx +/-0.02 in. (x.x +/-0.5mm) x.xxx +/-0.010 in. (x.xx +/-0.25mm).
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302  Tel 201-432-0463  Fax 201-432-9542  www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
5 Vdc - 13.8 Vdc Input
0.6 Vdc - 5.0 Vdc/50 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Jan. 21, 2010
Revision History
Date
Revision
2010-1-21
H
Changes Detail
Approval
1. Change to Bel new datasheet format; 2. Add new part number
“xRP2-50E1A1”
YF Sun
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
2010 Bel Fuse Inc. Specifications subject to change without notice. 012110
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