BEL SRBC

NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input
SRBC-16E2Ax
0.75 Vdc - 3.63 Vdc/16 A Output
RoHS Compliant
Rev.A
•
Non-Isolated
•
Under-voltage Lockout (UVLO)
•
High Efficiency
•
Over Temperature Protection
•
High Power Density
•
OCP/SCP
•
Excellent Thermal Performance
•
Wide Input
•
Low Cost
•
Wide Trim
•
Flexible Output Voltage
Sequencing (option)
•
Remote On/Off
•
Active Low/High (option)
•
Able to Sink & Source Current
•
Remote Sense
•
Industrial Temperature Range
Description
The Bel SRBC-16E2Ax 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 Bel SRBC-16E2Ax 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
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active Low
Model Number
Active High
0.75 V - 3.63 V
4.5 V - 14 V
16 A
58 W
92%
SRBC-16E2AL
SRBC-16E2A0
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 number to indicate Tray Packaging.
Absolute Maximum Ratings
Min
Typ
Max
Input Voltage (continuous)
Parameter
-0.3 V
-
15 V
Output Enable Terminal Voltage
-0.3 V
-
15 V
1
-0.3 V
-
Vin
Ambient Temperature
-40 °C
-
85 °C
Storage Temperature
-55 °C
-
125 °C
Sequencing Voltage
Notes
Notes: All specifications are typical at 25 °C unless otherwise stated.
1. SRBC-16E2Ax series of modules include a sequencing feature that enables users to implement
various types of output voltage sequencing in their applications. This is accomplished via an additional
sequencing pin. When not using the sequencing feature, either, tie the SEQ pin to Vin or leave it
unconnected.
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/16 A Output
Input Specifications
Parameter
Min
Typ
Max
Notes
4.5 V
Vo,set +1.5 V
-
-
14 V
14 V
15 A
Input Current (no load)
-
100 mA
-
Remote Off Input Current
-
2 mA
-
Input Reflected Ripple Current (pk-pk)
-
-
400 mA
Input Reflected Ripple Current (rms)
-
-
150 mA
-
0.2 A s
Turn-on Voltage Threshold
-
4.2 V
-
Turn-off Voltage Threshold
3.7 V
-
4.2 V
Input Voltage
Vo,set < 3.0 V
Vo,set ≥ 3.0 V
Input Current (full load)
2
I t Inrush Current Transient
2
Tested with one 1000 uF/25 V AL
input capacitor with ESR=0.03 ohm
max and 6 × 47 uF/16 V tantalum
capacitors with ESR=0.013 ohm
max at 100 kHz, & simulated
source impedance of 1000 nH,
5 Hz to 20 MHz.
2
0.4 A s
Output Specifications
Parameter
Min
Typ
Max
-2% Vo,set
-
2% Vo,set
Vin=12 V, full load
Load Regulation
-
0.1% Vo,set
-
Io=Iomin to Iomax
Line Regulation
-
0.1% Vo,set
-
Vin=Vinmin to Vinmax
Regulation Over Temperature
(-40 °C to +85 °C)
-
0.3% Vo,set
-
Tref=Tamin to Tamax
0A
-
16 A
-
180% Io
Output Voltage Set Point
Output Current
Current Limit Threshold
-
Short Circuit Surge Transient
-
1A s
3A s
Ripple and Noise (pk-pk)
-
30 mV
75 mV
Ripple and Noise (rms)
-
12 mV
30 mV
Turn on Time
-
12 mS
20 mS
Overshoot at Turn on
-
-
1% Vo,set
Output Capacitance
-
-
5000 uF
2
Notes
2
Tested with 0-20 MHz, 10 uF
tantalum capacitor & 1 uF TDK
ceramic capacitor at the output
Transient Response
50% ~ 100% Max Load
Settling Time
100% ~ 50% Max Load
Settling Time
All
-
150 mV
-
-
50 uS
-
-
150 mV
-
-
50 uS
-
di/dt=2.5 A/uS; Vin=12 V; and
with 2 × 150 uF polymer
capacitors at the output
Note: All specifications are typical at nominal input, 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 - 3.63 Vdc/16 A Output
General Specifications
Parameter
Min
Typ
Max
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
-
92%
90%
88%
87%
85%
79%
-
Vo=3.3 V
Vo=2.5 V
Vo=1.8 V
Vo=1.5 V
Vo=1.2 V
Vo=0.75 V
-
92%
90%
87%
86%
83%
78%
-
200 kHz
230 kHz
260 kHz
-
130 °C
-
0.7525 V
-
3.63 V
-
-
0.5 V
Efficiency
Efficiency
Switching Frequency
Over Temperature Shutdown
1
Output Trim Range (Wide Trim)
Remote Sense Compensation
MTBF
Notes
Measured at Vin=12 V, full load
Measured at Vin=5 V, full load
Calculated Per Bell Core SR-332 (IO =80%
Iomax; Vo=3.3 V; Vin=12 V; Ta = 25 °C)
2,666,488 hours
Dimensions
Inches (L × W × H)
Millimeters (L × W × H)
1.30 x 0.53 x 0.315
33.02 x 13.46 x 8.00
Weight
-
8g
-
Note: All specifications are typical at 25 °C unless otherwise stated.
Control Specifications
Parameter
Min
Typ
Max
Signal Low (Unit Off)
-0.2 V
-
0.3 V
Signal High (Unit On)
-
-
Vin, max
Signal Low (Unit On)
-0.2 V
-
0.3 V
Signal High (Unit Off)
2.5 V
-
Vin, max
25 mS
-
-
-
-
2 V/mS
-
100 mV
200 mV
200 mV
400 mV
Notes
Remote On/Off
SRBC-16E2A0; Remote On/Off pin open, Unit
on.
SRBC-16E2AL; Remote On/Off pin open, Unit
on.
Voltage Sequencing
Sequencing Delay Time
Sequencing Slew Rate Capability
Tracking Accuracy
Delay from Vinmin to application of voltage on
SEQ pin
Vinmin to Vinmax; Iomin to Iomax; Vseq<Vo
Power-Up
Power-Down
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/16 A Output
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
Rtrimup =
10500
− 1000
Vo − 0.7525
Sense
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
Vtrimup = 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/16 A Output
Efficiency Data
MODULE 2.5V
100%
90%
5.0V
12.0V
80%
EFFICIENCY
EFFICIENCY
MODULE 3.3V
100%
90%
5.0V
12.0V
80%
70%
60%
70%
1.6
4.0
8.0
12.0
1.6
16.0
4.0
MODULE 1.8V
16.0
MODULE 1.5V
100%
90%
5.0V
80%
12.0V
70%
EFFICIENCY
EFFICIENCY
12.0
OUTPUT CURRENT
OUTPUT CURRENT
100%
90%
5.0V
80%
12.0V
70%
60%
60%
1.6
4.0
8.0
12.0
1.6
16.0
4.0
5.0V
12.0V
8.0
12.0
OUTPUT CURRENT
16.0
EFFICIENCY
100%
90%
80%
70%
60%
50%
4.0
12.0
16.0
MODULE 0.75V
MODULE 1.2V
1.6
8.0
OUTPUT CURRENT
OUTPUT CURRENT
EFFICIENCY
8.0
100%
90%
80%
70%
60%
50%
5.0V
12.0V
1.6
4.0
8.0
12.0
16.0
OUTPUT CURRENT
Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com
NON-ISOLATED DC/DC CONVERTERS
4.5 Vdc - 14 Vdc Input
0.75 Vdc - 3.63 Vdc/16 A Output
Thermal Derating Curves
Vin=5 V, Vo=0.75 V
Vin=12 V, Vo=0.75 V
Vin=5 V, Vo=1.8 V
Vin=12 V, Vo=1.8 V
Vin=5 V, Vo=3.3 V
Vin=12 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
4.5 Vdc - 14 Vdc Input
0.75 Vdc - 3.63 Vdc/16 A Output
Ripple and Noise Waveforms
Vin=5 V, Vo=0.7525 V
Vin=5 V, Vo=1.2 V
Vin=5 V, Vo=1.5 V
Vin=12 V, Vo=0.7525 V
Vin=12 V, Vo=1.2 V
Vin=12 V, Vo=1.5 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 - 14 Vdc Input
0.75 Vdc - 3.63 Vdc/16 A Output
Ripple and Noise Waveforms (continued)
Vin=5 V, Vo=1.8 V
Vin=12 V, Vo=1.8 V
Vin=5 V, Vo=2.5 V
Vin=12 V, Vo=2.5 V
Vin=5 V, Vo=3.3 V
Vin=12 V, Vo=3.3 V
Note: Ripple and noise at full load, with 10uF tantalum capacitor and 1uF ceramic at the output, and Ta=25℃.
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/16 A Output
Transient Response Waveforms
50% to 100% load Transient at Vin=5 V, Vo=0.75 V
100% to 50% load Transient at Vin=5 V, Vo=0.75 V
50% to 100% load Transient at Vin=5 V, Vo=1.2 V
100% to 50% load Transient at Vin=5 V, Vo=1.2 V
50% to 100% load Transient at Vin=5 V, Vo=1.5 V
100% to 50% load Transient at Vin=5 V, Vo=1.5 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 - 14 Vdc Input
0.75 Vdc - 3.63 Vdc/16 A Output
Transient Response Waveforms (continued)
50% to 100% load Transient at Vin=5 V, Vo=1.8 V
100% to 50% load Transient at Vin=5 V, Vo=1.8 V
50% to 100% load Transient at Vin=5 V, Vo=2.5 V
100% to 50% load Transient at Vin=5 V, Vo=2.5 V
50% to 100% load Transient at Vin=5 V, Vo=3.3 V
100% to 50% load Transient at Vin=5 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
4.5 Vdc - 14 Vdc Input
0.75 Vdc - 3.63 Vdc/16 A Output
Transient Response Waveforms (continued)
50% to 100% load Transient at Vin=12 V, Vo=0.75 V
100% to 50% load Transient at Vin=12 V, Vo=0.75 V
50% to 100% load Transient at Vin=12 V, Vo=1.2 V
100% to 50% load Transient at Vin=12 V, Vo=1.2 V
50% to 100% load Transient at Vin=12 V, Vo=1.5 V
100% to 50% load Transient at Vin=12 V, Vo=1.5 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 - 14 Vdc Input
0.75 Vdc - 3.63 Vdc/16 A Output
Transient Response Waveforms (continued)
50% to 100% load Transient at Vin=12 V, Vo=1.8 V
100% to 50% load Transient at Vin=12 V, Vo=1.8 V
50% to 100% load Transient at Vin=12 V, Vo=2.5 V
100% to 50% load Transient at Vin=12 V, Vo=2.5 V
50% to 100% load Transient at Vin=12 V, Vo=3.3 V
100% to 50% load Transient at Vin=12 V, Vo=3.3 V
Note: Transient response with external load capacitance Cext=2x150uF (Polymer capacitors), and Ta=25℃.
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/16 A Output
Mechanical Outline
Pin Connections
RECOMMENDED PAD LAYOUT
Pin
Function
1
Remote On/Off
2
Vin
3
SEQ
4
Ground
5
Vout
6
Trim
7
Remote Sense
PAD SIZE:
MIN: 0.14"* 0.095" (3.56mm * 2.41mm)
MAX: 0.165"* 0.11" (4.19mm * 2.79mm)
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and
other hazardous substances from electronic products.
©2007 Bel Fuse Inc. Specifications subject to change without notice. 011607
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