NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input
0.75 Vdc - 5.0 Vdc/6 A Output
VRBA-06E1Ax
•
•
•
•
•
Non-Isolated
High Efficiency
High Power Density
Fixed Frequency
RoHS Compliant
•
•
•
•
•
Rev.A
Under-Voltage Lockout (UVLO)
Remote On/Off
OCP/SCP
Wide Input
Wide Trim Range
Active Low/High (Option)
Description
The Bel VRBA-06E1Ax modules are a series of non-isolated dc/dc converters that can deliver up to 6 A of output
current with full load efficiency of 92% at 5.0 Vdc output. These modules provide precisely regulated voltage
programmable via external resistor from 0.75 Vdc to 5.0 Vdc over a wide range of input voltage. Their open-frame
construction and small footprint enable designers to develop cost and space-efficient solutions. Standard features
include remote On/Off, programmable output voltage and over current protection.
Part Selection
Output
Voltage
5.0 V
0.75 V
-
3.3 V
Input
Voltage
7.0 V -14 V
4.5 V - 14 V
Max. Output
Current
6A
6A
Max. Output
Power
30.0 W
19.8 W
Typical
Efficiency
92%
88%
Model Number
Active Low
VRBA-06E1AL
VRBA-06E1AL
Model Number
Active High
VRBA-06E1A0
VRBA-06E1A0
Notes:
1. Add “G” suffix at the end of the model numbers to indicate Tray Packaging.
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)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3 V
-0.3 V
-40
°C
-55
°C
Typ
-
-
-
-
Max
15 V
15 V
85
°C
125
°C
Notes
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Input Specifications
Parameter
Input Voltage
Vo, set
≤
3.3 V
Vo, set = 5.0 V
Input Current (full load)
Vo=5.0 V
Vo=3.3 V
Vo=1.8 V
Vo=0.75 V
Input Current (no load)
Vo=5.0 V
Vo=0.75 V
Remote Off Input Current
Input Reflected Ripple Current (pk-pk)
Input Reflected Ripple Current (rms)
-
-
-
-
-
-
-
3 mA
120 mA
60 mA
100 mA
20 mA
5 mA
200 mA
100 mA
Tested with two 100 uF/25 V input
Tantalum capacitors & simulated source
impedance of 1uH, 5 Hz to 20 MHz.
-
-
-
-
2.75 A
1.85 A
1.05 A
0.55 A
4.8 A
4.8 A
3.2 A
1.8 A
4.5 V
7.0 V
12 V
12 V
14 V
14 V
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
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input
0.75 Vdc - 5.0 Vdc/6 A Output
Input Specifications (continue)
Parameter
I t Inrush Current Transient
Turn-on Voltage Threshold
Vo, set
≤
3.3 V
Vo, set = 5.0 V
Turn-off Voltage Threshold
Vo, set
≤
3.3 V
Vo, set = 5.0 V
2
Min
-
-
-
-
-
Typ
0.002 A s
4.3 V
6.0 V
4.0 V
5.5 V
2
Max
0.02 A s
4.5 V
6.5 V
4.3 V
6.0 V
2
Notes
Shut down or below 90% set
point.
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Output Voltage Set Point
Load Regulation
Line Regulation
Regulation Over Temperature
(-40°C to +85°C)
Output Current
Current Limit Threshold
Short Circuit Surge Transient
Ripple and Noise (pk-pk)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
Ripple and Noise (rms)
Vo=5.0 V
Vo=3.3 V
Vo=0.75 V
Turn on Time
Overshoot at Turn on
Output Capacitance
ESR
≥
1mohm
ESR
≥
10mohm
Transient Response
50% ~ 100% Max Load
Settling Time
100% ~ 50% Max Load
Settling Time
V
O
=
0.75 - 5.0 V
0 uF
0 uF
-
-
-
-
-
-
200 mV
25 uS
200 mV
25 uS
1000 uF
2200 uF
350 mV
50 uS
350 mV
50 uS
-
-
-
-
-
35 mV
25 mV
10 mV
6 mS
0%
50 mV
40 mV
15 mV
12 mS
3%
-
-
-
100 mV
80 mV
35 mV
140 mV
120 mV
70 mV
Tested with 0-20 MHz BW, with
external 10 uF/10 V tantalum
capacitor & 1 uF/10 V ceramic
capacitor at the output
Min
-2%Vo,set
-2.5%Vo,set
-
-
-
0A
6.8 A
-
Typ
-
-
0.4%Vo,set
0.3%Vo,set
0.5%Vo,set
-
-
0.25 A s
2
Max
2%Vo,set
3.5%Vo,set
-
-
-
6A
15 A
-
Notes
Vin=12 V, Io=Io max
Over all operating input voltage,
resistive load, and temperature
conditions
Io=Iomin to Iomax
Vin=Vinmin to Vinmax
Tref=Tamin to Tamax
di/dt=2.5 A/uS; Vin=12 V; and
with 10 uF/10 V tantalum
capacitor & 1 uF/10 V ceramic
capacitor at the output.
Note:
All specifications are typical at nominal input (Vin=12 V), full load 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 - 14 Vdc Input
0.75 Vdc - 5.0 Vdc/6 A Output
General Specifications
Parameter
Efficiency
Vo=5.0 V
Vo=3.3 V
Vo=1.8 V
Vo=0.75 V
Switching Frequency
Output Voltage Trim Range (wide trim)
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
-
1.0 x 0.5 x 0.243
25.4 x 12.7 x 6.16
5g
-
Vertical Mount
88%
85%
80%
68%
220 kHz
0.7525 V
92%
88%
84%
73%
250 kHz
-
3,260,000 hours
-
-
-
280 kHz
5V
Calculated Per Bell Core TR-332 (I
O
= Nominal; T
a
= 25
°C)
Measured at Vin=12 V, Io=Io, max
Min
Typ
Max
Notes
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit Off)
Signal High (Unit On)
Signal Low (Unit On)
Signal High (Unit Off)
Min
-0.3 V
2.5 V
-0.3 V
2.5 V
Typ
-
-
-
-
Max
0.4 V
14 V
0.4 V
14 V
Notes
VRBA-06E1A0; Remote On/Off pin open, Unit
on.
VRBA-06E1AL; Remote On/Off pin open, Unit
on.
Output Trim Equations
Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The
Trim Up resistor should be connected between the Trim pin and Ground.
Vout
R
trim
=
10.507
−
1
V
adj
−
0.7525
Module
Trim
GND
Rtrim
Equation for calculating the trim voltage (in V) given the desired adjusted voltage (Vadj) is shown below. The
Trim Up voltage should be connected between the Trim pin and Ground.
V
trim
=
0.7
−
0.0667
×
(
V
o
−
0.7525)
Module
Vout
Trim
Vtrim
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 - 14 Vdc Input
0.75 Vdc - 5.0 Vdc/6 A Output
Efficiency Data
MODULE 5.0V
100.0%
EFFICIENCY
7.0V
12.0V
14.0V
80.0%
60.0%
40.0%
20.0%
0.0%
1A
2A
3A
4A
5A
1A
MODULE 3.3V
100.0%
80.0%
60.0%
40.0%
20.0%
0.0%
OUTPUT CURRENT
EFFICIENCY
4.5V
12.0V
14.0V
2A
3A
4A
5A
OUTPUT CURRENT
MODULE 1.8V
100.0%
EFFICIENCY
90.0%
80.0%
70.0%
60.0%
0.6A
1.5A
3.0A 4.5A
6.0A
OUTPUT CURRENT
4.5V
12.0V
14.0V
MODULE 0.75V
90.0%
80.0%
70.0%
60.0%
50.0%
0.6A
1.5A
3.0A
4.5A
6.0A
OUTPUT CURRENT
4.5V
12.0V
14.0V
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
EFFICIENCY
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input
0.75 Vdc - 5.0 Vdc/6 A Output
Thermal Derating Curves
Vo=0.75 V
Vo=2.5 V
Vo=5 V
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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