NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input Apr. 14, 2011 0.591 Vdc - 5.1 Vdc/20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
RoHS Compliant
VRP1-20E2AC Features
Non-Isolated High Efficiency
PRELIMINARY
Rev.A
Wide Output Trim Range Output Over-Voltage Shutdown OCP/SCP Low Output Ripple Power Good Signal Remote On/Off
Fixed Switching Frequency Low Cost Excellent Thermal Performance Wide Input Voltage Range
Class 1, Category 2, Non-Isolated DC/DC Converter (refer to IPC-9592)
Applications
Networking Computers and peripherals Telecommunications
Description
The VRP1-20E2AC is a non-isolated dc/dc converter that operates over a wide range of input voltage (Vin = 4.5 Vdc - 13.8 Vdc). This unit can provide a precisely regulated output voltage from 0. 591 Vdc to 5.1 Vdc and can deliver up to 20 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 0.591 Vdc - 5.1Vdc Input Voltage 4.5 Vdc - 13.8 Vdc Max. Output Current 20 A Max. Output Power 100 W Typical Efficiency 94% Model Number Active High VRP1-20E2AC
Notes: Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation V R P1 – 20 E 2A C
12 3 4 56 7
1---Vertical mount 2---RoHS 6, change “R” to “7” means RoHS 5 3---Series name, SIP 4---Series code, 20A output 5--- Wide input range (4.5-13.8V) 6---Wide output range (0.591-5.1V) 7---Suffix
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
1
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input Apr. 14, 2011 0.591 Vdc - 5.1 Vdc/20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min -0.3 -0.3 0 -40 Typ Max 15 15 70 125 Unit V V C C Notes
Absolute Maximum Ratings
Parameter Input Voltage (continuous) Output Enable Terminal Voltage Ambient Temperature Storage Temperature
Note: Ratings used beyond the maximum ratings may cause a reliability degradation of the converter or may permanently damage the device.
Input Specifications
Parameter Input Voltage Vo=3.45V 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 4.5 1.3*Vo -
Typ 12 12 150 50 50 20 4.2 3.9
Max 13.8 13.8 20 300 100 40 1 -
Unit V V A mA mA mA
Notes
An input line fuse must always be used.
Use a 1000uF AL-Cap on the input. mA As V V A 30.1K resistor is connected from Enable to Vin.
2
Note: All specifications are typical at 25 C unless otherwise stated.
Output Specifications
Parameter Output Voltage Set Point Accuracy Load regulation Line Regulation Regulation Over Temperature (0 C to +70 C) Output Current Current Limit Threshold Output Ripple and Noise (pk-pk) Output Ripple and Noise (rms) Short Circuit Surge Transient Min -1.5 0 Typ 150 40 20 1 Max 1.5 1 0.5 1 20 80 40 3 Unit %Vo,set %Vo,set %Vo,set %Vo,set A % Iomax mV mV As
2
Notes Vin=12V, lout=half load
0-20MHz BW, with a 1µF ceramic capacitor and a 10uF 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
2
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input Apr. 14, 2011 0.591 Vdc - 5.1 Vdc/20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min 0 Typ 2 Max 10 5 1000 Unit mS % uF Notes
Output Specifications (continued)
Parameter Turn On Time Overshoot at Turn on and off Output Capacitance Transient Response
△V50%~75%
Overshoot Settling Time Overshoot Settling Time Vo=All
-
200 200 -
300 50 300 50
mV uS mV uS di/dt = 2.5 A/uS; Vin =12 V; with 10 uF tantalum cap and 1 uF ceramic at the output, Ta=25 C
of Max Load
△V75%~50%
of Max Load
Note: All specifications are typical at 25°C unless otherwise stated.
General Specifications
Parameter Efficiency Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.5 V Vo=0.591 V Switching Frequency Output Voltage Trim Range Remote Sense Compensation Weight MTBF Dimensions Inches (L × W × H) Millimeters (L × W × H) 1.45 x 0.61 x 0.40 36.83 x 15.49 x 10.15 0.591 94 92 90 85 70 500 9.7 TBD 5.1 0.2 % % % % % kHz V V g Calculated Per Bell Core SR-332 (IO = 80%Iomax; Vin=12 V; Ta = 25 C) Vin=12 V, Io=full load Vin=12V, full load Min Typ Max Unit Notes
Note: All specifications are typical at 25 C unless otherwise stated.
Control Specifications
Parameter Remote On/Off (Active High) Signal Low (Unit Off) Signal High (Unit On) PwGood (PowerGood) PwGood = High = Power Good PwGood = Low = Power Not Good 2.4 0 6 2 0.35 5 V mA V mA -0.3 2 0.4 5.5 V V Remote On/Off pin is open, unit is on. Min Typ Max Unit Notes
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
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NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input Apr. 14, 2011 0.591 Vdc - 5.1 Vdc/20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Output Trim Equation
The Rtrim resistor should be connected between the Trim pin and GND pin.
Vout
R trim
1 . 182 Vo 0 . 591
kΩ
Sense
Module
trim
Rtrim
GND
Efficiency Data
Module 5V
Module 2.5V 100.0% 95.0%
100.0% 98.0% 96.0% 94.0% 92.0% 90.0% 88.0% 86.0% 84.0% 82.0% 80.0% 0.0
7V 12V 14V
efficiency
efficiency
90.0% 85.0% 80.0% 75.0% 70.0% 4.5V 12V 14V
2.0
5.0
10.1
15.0
20.00
0.0
2.0
output current
5.0 10.0 output current
15.0
20.0
Module 0.591V
90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 55.0% 50.0% 45.0% 40.0% 0.0
efficiency
4.5V 12V 14V
2.0
5.0
10.0
15.0
20.0
output current
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
4
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input Apr. 14, 2011 0.591 Vdc - 5.1 Vdc/20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Thermal Derating Curves
Vout=0.591V
Vout=1.2 V
Vout=2.5 V
Vout=3.3 V
Vout=5 V
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
5
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input Apr. 14, 2011 0.591 Vdc - 5.1 Vdc/20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Ripple and Noise Waveforms
12 Vdc input, 0.591 Vdc output
12 Vdc input, 2.5 Vdcoutput
12 Vdc input, 5 Vdc output
Note: Ripple and noise at full load, 0-20 MHz BW, with a 10 uF tantalum cap and a 1 uF ceramic cap, 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
6
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input Apr. 14, 2011 0.591 Vdc - 5.1 Vdc/20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Transient Response Waveforms
Vout= 2.5 V 50%-75% Load Transients
Vout=2.5 V 75%-50% Load Transients
Vout= 5 V 50%-75% Load Transients
Vout=5 V 75%-50% Load Transients
Note: Transient response at di/dt = 2.5 A/uS, with 1 uF ceramic capacitor 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
7
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input Apr. 14, 2011 0.591 Vdc - 5.1 Vdc/20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Mechanical Outline
Pin Connections
Pin 1 2 3 4 5 6 7 8 Function Vout Trim+ GND PwGOOD Enable Vin Sense+ Sense-
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
8
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input Apr. 14, 2011 0.591 Vdc - 5.1 Vdc/20 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Revision History
Date 2011-04-14 Revision PA First release Changes Detail Approval JZ Wang
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
2011 Bel Fuse Inc. Specifications subject to change without notice. 041411
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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
