NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input
0.75 Vdc - 3.63 Vdc/10 A Output
SRBC-10E1Ax
RoHS Compliant
Rev.A
Non-Isolated
High Efficiency
Fixed Frequency
Remote On/Off
Low Cost
Industrial Temperature Range
(Option)
Under-Voltage Lockout (UVLO)
Over Temperature Shutdown
OCP/SCP
Wide Input
Wide Trim
Remote Sense
Description
The Bel SRBC-10E1Ax is part of the non-isolated dc/dc converter series. The modules use a SMT package.
These converters are available in a range of output voltages from 0.75 Vdc to 3.63 Vdc over a wide range of
input voltage (Vin = 4.5 Vdc - 14 Vdc). The efficiency is typically 93% at 3.3 Vdc at output at full load.
Part Selection
Output
Voltage
0.75 V - 3.63 V
Input
Voltage
4.5 V - 14 V
Max. Output
Current
10 A
Max. Output
Power
36 W
Typical
Efficiency
93%
Model Number
Active Low
SRBC-10E1AL
Model Number
Active High
SRBC-10E1A0
Notes:
1. Add “G” suffix at the end of the model number 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
<
3.0
Vo,set
≥
3.0
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 V
Vo,set +1.5
-
-
-
-
Typ
-
-
-
40 mA
2 mA
-
Max
14 V
14 V
8.6 A
-
-
400 mA
Notes
An input line fuse must always be used.
-
-
-
-
-
0.04 A s
4.3 V
4.0 V
2
150 mA
0.08 A s
2
With simulated source impedance of
1000 nH, 5 Hz to 20 MHz, with one 1000
uF/25 V AL input capacitor with
ESR=0.03 ohm max and 4
×
47 uF/16 V
tantalum capacitors with ESR=0.013
ohm max at 100 kHz
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 - 14 Vdc Input
0.75 Vdc - 3.63 Vdc/10 A Output
Output Specifications
Parameter
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)
Ripple and Noise (rms)
Turn on Time
Overshoot at Turn on
Output Capacitance
Transient Response
50% ~ 100% Max Load
Settling Time
100% ~ 50% Max Load
Settling Time
Min
-2%Vo,set
-
-
-
0A
-
-
-
-
-
-
0 uF
-
-
-
-
Typ
-
0.1%Vo,set
0.1%Vo,set
0.3%Vo,set
-
200% Iout
2
1A s
30 mV
12 mV
8 mS
-
-
160 mV
50 uS
160 mV
50 uS
Max
2%Vo,set
-
-
-
10 A
-
2
3A s
75 mV
35 mV
20 mS
1%
5600 uF
-
-
-
-
Tested with 0-20 MHz BW,
with 10 uF tantalum
capacitor & 1 uF ceramic
capacitor at the output
Notes
Vin=5 V and 12 V, full load
V
O
= 0.75 V -
3.63 V
di/dt=2.5 A/uS; Vin=5 V & 12
V; and with 470 uF tantalum
capacitor at the output
Note:
All specifications are typical at nominal input, full load at 25
°C
unless otherwise stated.
General Specifications
Parameter
Efficiency
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
Efficiency
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
Switching Frequency
Over Temperature Shutdown
Output Voltage Trim Range
Remote Sense Compensation
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
-
1.3 x 0.53 x 0.315
33.02 x 13.46 x 8.00
8g
-
-
-
-
-
-
-
265 kHz
-
0.7525 V
-
93%
92%
90%
89%
87.5%
81%
300 kHz
130
°C
-
-
4,982,651 hours
-
-
-
-
-
-
335 kHz
-
3.63 V
0.5 V
Measured at Vin=12 V, full load
-
-
-
-
-
-
92%
91%
89%
88%
86%
80%
-
-
-
-
-
-
Measured at Vin=5 V, full load
Min
Typ
Max
Notes
Calculated Per Bell Core SR-332 (I
O
=80%Io,max; Vo=3.3 V; Vin=12 V; T
a
=
30°C)
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 - 14 Vdc Input
0.75 Vdc - 3.63 Vdc/10 A Output
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit Off)
Signal High (Unit On)
Signal Low (Unit On)
Signal High (Unit Off)
-0.2 V
-
-0.2 V
2.5 V
-
-
-
-
0.3 V
Vin, max
0.3 V
Vin, max
SRBC-10E1A0; Remote On/Off pin open, Unit
on.
SRBC-10E1AL; Remote On/Off pin open, Unit
on.
Min
Typ
Max
Notes
Output Trim Equations
Equation for calculating the trim resistor (in
Ω)
given the desired output voltage (Vo) is shown below. The Trim Up
resistor should be connected between the Trim pin and Ground.
Vout
Sense
R
trim
=
10500
−
1000
Vo
−
0.7525
Module
trim
Rtrim
GND
Equation for calculating the trim voltage (in V) given the desired output voltage (Vo) is shown below. The Trim Up
voltage should be connected between the Trim pin and Ground.
Vout
V
trim
=
0.7
−
0.0667
×
(
Vo
−
0.7525)
Sense
Module
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 - 3.63 Vdc/10 A Output
Efficiency Data
Module 3.3V
100.0%
Efficiency
95.0%
90.0%
85.0%
80.0%
1A
2.5A
5A
Output Current
7.5A
10A
5.0V
12.0V
Efficiency
100.0%
95.0%
90.0%
85.0%
80.0%
1A
2.5A
Module 2.5V
5.0V
12.0V
5A
Output Current
7.5A
10A
Module 1.8V
95.0%
Efficiency
85.0%
80.0%
75.0%
70.0%
1A
2.5A
5A
Output Current
7.5A
10A
Efficiency
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
1A
2.5A
Module 1.5V
90.0%
5.0V
12.0V
5.0V
12.0V
5A
Output Current
7.5A
10A
Module 1.2V
100.0%
Efficiency
90.0%
80.0%
70.0%
60.0%
50.0%
1A
2.5A
Module 0.75V
90.0%
Efficiency
80.0%
70.0%
60.0%
50.0%
1A
2.5A
5A
Output Current
7.5A
10A
5.0V
12.0V
5.0V
12.0V
5A
Output Current
7.5A
10A
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 - 3.63 Vdc/10 A Output
Thermal Derating Curves
Vo=0.75 V
Vo=1.8 V
Vo=3.3 V
Bel Fuse Inc.
206 Van Vorst Street, Jersey City, NJ 07302
•
Tel 201-432-0463
•
Fax 201-432-9542
•
www.belfuse.com
