NON-ISOLATED DC/DC CONVERTERS
6 Vdc - 14 Vdc Input
Mar. 19, 2010
0.8 Vdc - 3.63 Vdc/25 A or 30 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
RoHS Compliant
•
•
•
•
•
•
•
SRBC-30E2AL
•
•
•
•
•
•
•
Non-Isolated
High Efficiency
Fixed Frequency
Wide Trim
Low Cost
Rev.H
Under-Voltage Lockout (UVLO)
Over Temperature ShutDown
OCP/SCP
Remote On/Off
Remote Sense
Parallel Operation With Active
Current Sharing (Option)
UL60950-1 Recognized (UL/cUL)
Flexible Output Voltage
Sequencing
Industrial Temperature Range
Description
The Bel SRBC-30E2AL is part of the non-isolated dc/dc converter Power Module series. The modules use a SMT
package. These converters are available in a range of output voltages from 0.8 Vdc to 3.63 Vdc over a wide
range of input voltage (Vin = 6 Vdc - 14 Vdc). The Bel SRBC-30E2AL has a sequencing feature that enables
designers to implement various types of output voltage sequencing when powering. The efficiency is typically
92% at 3.3 Vdc output at full load.
Part Selection
Output
Voltage
Vo
≤
2.5 V
Vo
＞
2.5 V
Input Voltage
6 V - 14 V
Max. Output
Current
30 A
25 A
Max. Output
Power
75 W
90 W
Typical
Efficiency
87%
92%
Model Number
Active Low
SRBC-30E2AL
Note:
Add “G” suffix at the end of the model number to indicate Tray Packaging.
Part Number Explanation
S R BC – 30 E 2A L
1 2
3
4
5
6
7
1---Surface mount
2---RoHS 6, change “R” to “7” means RoHS 5
3---Series name, bobcat
4---Series code
5--- Input range (6-14V)
6---Output voltage, wide trim
7---Suffix, active low
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.
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
6 Vdc - 14 Vdc Input
Mar. 19, 2010
0.8 Vdc - 3.63 Vdc/25 A or 30 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min
6V
-
-
-
-
Typ
12 V
-
150 mA
2 mA
100 mA
Max
14 V
26 A
300 mA
-
-
With simulated source impedance of
1000 nH, 5 Hz to 20 MHz, and use a
220 uF/25 V AL-Cap, 270 uF/16 V
Osc-Cap and 2 x 22 uF/25 V
ceramic capacitors at 100 kHz at
25°C.
2
Input Specifications
Parameter
Input Voltage
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
1
Notes
-
-
-
-
40 mA
-
5.0 V
4.6 V
-
1A s
-
-
Notes:
1.This power module is not internally fused. An input line fuse must always be used.
All specifications are typical at nominal input, full load at 25
°C
unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Load Regulation
Line Regulation
Regulation Over Temperature
(-40
°C
to +85
°C)
Output Current
Vo, set
≤
2.5 V
Vo, set
＞
2.5 V
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
Vo=3.3 V
-
-
-
-
150 mV
25 uS
150 mV
25 uS
-
-
-
-
di/dt=1 A/uS; Vin=12 V
Min
-1.5% Vo,set
-
-
-
0A
0A
105% Io
-
-
-
-
-
242 uF
Typ
-
-
-
-
-
-
140% Io
1A s
50 mV
30 mV
10 mS
-
-
2
Max
1.5% Vo,set
0.4% Vo,set
0.3% Vo,set
0.8% Vo,set
30 A
25 A
-
3A s
100 mV
60 mV
20 mS
3% Vo,set
10000 uF
2
Notes
Vin=12 V, Io=half load
0-20 MHz BW
ESR
＞
0.01 ohm max
Note:
All specifications are typical at nominal input, full load at 25°C, with a 22 uF ceramic and a 220 uF
tantalum cap at the output 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
6 Vdc - 14 Vdc Input
Mar. 19, 2010
0.8 Vdc - 3.63 Vdc/25 A or 30 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Min
Vo=3.3 V
Vo=1.8 V
Vo=0.8 V
-
-
-
-
-
0.8 V
-
Typ
92%
87%
77%
300 kHz
125
°C
-
-
3,289,732 hours
Max
-
-
-
-
-
3.63 V
0.5 V
Calculated Per Bell Core SR-332 (I
O
=80%
Iomax; Vo=3.3 V; Vin=12 V; 200LFM forced
air flow; T
a
= 25
°C)
Notes
Measured at Vin=12 V, full load
General Specifications
Parameter
Efficiency
Switching Frequency
Over Temperature Shutdown
Output Trim Range (Wide Trim)
Remote Sense Compensation
MTBF
Dimensions
Inches (L
×
W
×
H)
Millimeters (L
×
W
×
H)
Weight
1.3 x 0.53 x 0.358
33 x 13.5 x 9.10
-
6.5 g
-
Note:
All specifications are typical at 25
°C
unless otherwise stated.
Control Specifications
Parameter
Remote On/Off
Signal Low (Unit On)
Signal High (Unit Off)
Voltage Sequencing
Sequencing Delay Time
Sequencing Slew Rate Capability
Tracking Accuracy
Power-Up
Power-Down
Forced Load Share Accuracy
Number of Units in Parallel
-
-
-
-
100 mV
200 mV
10% Io
-
200 mV
400 mV
-
5
10 mS
-
-
-
-
2 V/mS
Vin min to Vin max; Io min to Io max; Vseq<Vo
Delay from Vin min to application of voltage on
SEQ pin
Min
-0.3 V
3V
Typ
-
-
Max
1.2 V
Vin, max
Notes
When Enable pin floating ,the unit is on.
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.
R
trim
⎡
1200
⎤
= ⎢
−
100
⎥
⎣
Vo
−
0 . 8
⎦
Vout
Sense
Module
trim
Rtrim
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
6 Vdc - 14 Vdc Input
Mar. 19, 2010
0.8 Vdc - 3.63 Vdc/25 A or 30 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Efficiency Data
Efficiency Curve
90%
85%
6V
Efficiency
80%
75%
70%
65%
60%
3
7.5
15
22.5
30
Output Current (A)
12 V
14 V
Vo=0.8 V
Efficiency Curve
95%
90%
Efficiency
85%
80%
75%
70%
65%
3
7.5
15
22.5
30
Output Current (A)
6V
12 V
14 V
Vo=1.8 V
Efficiency Curve
100%
95%
6V
Efficiency
90%
85%
80%
75%
70%
2.5
6.25
12.5
18.75
25
Output Current (A)
12 V
14 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
NON-ISOLATED DC/DC CONVERTERS
6 Vdc - 14 Vdc Input
Mar. 19, 2010
0.8 Vdc - 3.63 Vdc/25 A or 30 A Output
Bel Power Inc., a subsidiary of Bel Fuse Inc.
Thermal Derating Curves
Vin=12 V, Vo=0.8 V
Vin=12 V, Vo=1.8 V
Vin=12 V, Vo=3.3 V
Note:
Maximum junction temperature of semiconductors derated to 120C.
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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