BEL VRAE

NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input
VRAE-03E1A1
0.59 Vdc - 5.1 Vdc / 3 A Output
RoHS Compliant
Rev.B

Non-Isolated

Under-Voltage Lockout

High Efficiency

Wide Trim

Fixed Frequency

OCP/SCP

Low Cost

Remote On/Off

Wide Input
Description
The Bel VRAE-03E1A1 is part of the non-isolated dc/dc converter Power Module series. The modules use a SIP
package. These converters are available in a range of output voltages from 0.59 Vdc to 5.1 Vdc over a wide
range of input voltage (VIN = 4.5 Vdc - 13.8 Vdc).The efficiency is typically 91% at 3.3 Vout (Vin=12 Vdc) at full
load.
Part Selection
Output
Voltage
0.59 V - 5.1 V
Input Voltage
4.5 V - 13.8 V
Max. Output
Current
3A
Max. Output
Power
15 W
Typical
Efficiency
91%
Model Number
VRAE-03E1A1
Notes: 1. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
2. Add “G” suffix at the end of the model numbers listed above to indicate “Tray Packaging”.
Absolute Maximum Ratings
Parameter
Input Supply Voltage
Ambient Temperature
Min
-0.3 V
0 C
Typ
-
Storage Temperature
Max
15 V
70 C
-55 C
-
125 C
Notes
Note: All specifications are typical at 25 C unless otherwise stated.
Input Specifications
Parameter
Operating Input Voltage
Vo,set≤3.63 V
Vo,set﹥3.63 V
Input Current (full load)
Min
Typ
Max
4.5 V
7.0 V
-
13.8 V
13.8 V
-
-
TBD
Input Current (no load)
-
40 mA
100 mA
Remote Off Input Current
-
10 mA
25 mA
Input Reflected Ripple Current
(pk-pk)
-
30 mA
50 mA
Input Reflected Ripple Current
(rms)
-
10 mA
20 mA
I t Inrush Current Transient
-
-
1As
Turn on Voltage Threshold
4.15 V
4.3 V
4.45 V
Turn off Voltage Threshold
3.7 V
4.1 V
4.3 V
2
Notes
An input line fuse must always be used.
With simulated source impedance of
1000 nH, 5 Hz to 20 MHz. Use a 1000
uF/25 V AL-Cap with ESR=0.03 ohm
max and 2*100 Uf/25V Tan-Cap with
ESR=0.013 ohm max at 100
[email protected]°C.
2
A 30.1K resistor is connected from
Enable to Vin.
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
4.5 Vdc - 13.8 Vdc Input
0.59 Vdc - 5.1 Vdc / 3 A Output
Output Specifications
Parameter
Min
Typ
Max
-2%Vo,set
-
2%Vo,set
Load Regulation
-
±0.2%Vo,set
±0.5%Vo,set
Line Regulation
-
±0.2%Vo,set
±0.5%Vo,set
Temperature Regulation
-
0.3%Vo,set
-
0A
-
3A
3.6 A
5A
7A
Output Ripple and Noise (pk-pk)
-
60 mV
100 mV
Output Ripple and Noise (rms)
-
20 mV
40 mV
Short Circuit Surge Transient
-
-
2A s
Turn on Time
-
3 mS
5 mS
Overshoot at Turn on
-
-
1%
0 uF
-
1000 uF
-
120 mV
200 mV
-
20 uS
50 uS
-
120 mV
200 mV
-
20 uS
50 uS
Output Voltage Set Point
Output Current
Output DC Current Limit
Output Capacitance
2
Notes
Vin= 12 V, lout=full load
0-20 MHz BW, with a 10 uF
tantalum capacitor and 1 uF
ceramic capacitor at the output.
Vo≤20 mV, Hiccup Mode
Transient Response
50% ~ 100% Max Load
Settling Time
100% ~ 50% Max Load
VO =All
Settling Time
di/dt=0.25 A/uS; Vin=12 V; with
a 10 uF tantalum capacitor and
a 1 uF ceramic capacitor at the
output.
Note: All specifications are typical at normal input, full load at Ta= 25°C unless otherwise stated.
General Specifications
Parameter
Min
Typ
Max
91%
89%
87%
84%
83%
80%
73%
93%
91%
89%
86%
85%
82%
75%
-
-
500 kHz
-
0.591 V
-
5.1 V
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-0.9 V
Switching Frequency
Output Voltage Trim Range
(Wide Trim)
MTBF
Vin=12 V
Calculated Per Bell Core SR-332 (IO =
80% load; Vin=12 V; Vo=5 V; 0 LFM; Ta
= 25 C)
7,579,849 hours
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
Weight
0.65 x 0.41 x 0.32
16.51 x 10.41 x 8.13
-
2g
-
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
4.5 Vdc - 13.8 Vdc Input
0.59 Vdc - 5.1 Vdc / 3 A Output
Control Specifications
Parameter
Min
Typ
Max
Signal Low (Unit Off)
-0.3 V
-
0.4 V
Signal High (Unit On)
2.0 V
-
5.5 V
Notes
Remote On/Off
Remote On/Off Pin is open, the unit is off.
Output Trim Equations
Equation for calculating the trim resistor given the desired output voltage (Vo) is shown below. The Rtrim
resistor should be connected between the trim pin and GND pin.
Vout
Rtrim 
1.182
k
Vo  0.591
Module
Trim
Rtrimup
GND
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
4.5 Vdc - 13.8 Vdc Input
0.59 Vdc - 5.1 Vdc / 3 A Output
Efficiency Data
Efficiency vs. Vo=0.591 V
Output Current at Room Temperature
0.9
EFFICIENCY (%)
0.8
0.7
0.6
0.5
4.5V
0.4
12.0V
13.8V
0.3
0.3
0.75
1.5
2.25
3
OUTPUT CURRENT (Amp)
Efficiency vs. Vo=3.3 V
Output Current at Room Temperature
1
EFFICIENCY (%)
0.95
0.9
0.85
0.8
0.75
0.7
4.5V
12.0V
0.65
13.8V
0.6
0.3
0.75
1.5
2.25
3
OUTPUT CURRENT (Amp)
Efficiency vs. Vo=5.0 V
Output Current at Room Temperature
1
EFFICIENCY (%)
0.95
0.9
0.85
0.8
0.75
7V
12.0V
0.7
13.8V
0.65
0.3
0.75
1.5
2.25
3
OUTPUT CURRENT (Amp)
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
4.5 Vdc - 13.8 Vdc Input
0.59 Vdc - 5.1 Vdc / 3 A Output
Thermal Derating Curves
Vin=12 V, Vout=5 V
Vin=12 V, Vout=3.3 V
Vin=12 V, Vout=2.5 V
Vin=12 V, Vout=1.2 V
Vin=12 V, Vout=0.59 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
4.5 Vdc - 13.8 Vdc Input
0.59 Vdc - 5.1 Vdc / 3 A Output
Ripple and Noise Waveform
12 V input, 0.591 V output
12 V input, 3.3 V output
12 V input, 5.0 V output
Note: Ripple and noise at full load, 0-20MHz BW, with a 10 uF tantalum cap and a 1 uF ceramic cap
at the 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
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input
0.59 Vdc - 5.1 Vdc / 3 A Output
Transient Response Waveforms
100% to 50% load step at 12 V input, 0.591 V output
50% to 100% load step at 12 V input, 0.591 V output
100% to 50% load step at 12 V input, 3.3 V output
50% to 100% load step at 12 V input, 3.3 V output
100% to 50% load step at 12 V input, 5.0 V output
50% to 100% load step at 12 V input, 5.0 V output
Note: Transient response at di/dt=0.25 A/uS, with a 1uF ceramic cap 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
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 13.8 Vdc Input
0.59 Vdc - 5.1 Vdc / 3 A Output
Mechanical Outline
Pin Connections
Pin
Function
1
ENABLE
2
Vin
3
GND
4
Vout
5
Trim
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
2009 Bel Fuse Inc. Specifications subject to change without notice. 041509
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