BEL SRBA-06F1AX_07

NON-ISOLATED DC/DC CONVERTERS
2.4 Vdc - 5.5 Vdc Input
SRBA-06F1Ax
0.75 Vdc - 3.63 Vdc/6 A Output
RoHS Compliant
Rev.A
•
Non-Isolated
•
Under-voltage Lockout (UVLO)
•
High Efficiency
•
Wide Trim
•
High Power Density
•
OCP/SCP
•
Fixed Frequency (300 kHz)
•
Remote On/Off
•
Converter Can Sink and Source
Current
•
Active Low/High (Option)
Description
The Bel SRBA-06F1Ax modules are a series of non-isolated dc/dc converters that deliver up to 6 A of output
current with full load efficiency of 93% at 3.3 Vdc output. These modules provide precisely regulated voltage
programmable via external resistor from 0.75 Vdc to 3.63 Vdc over a wide range of input voltage (2.4 Vdc - 5.5
Vdc). The open-frame construction and small footprint enable designers to develop cost and space-efficient
solutions. Standard features include remote On/Off, over current protection, short circuit protection, wide input,
and programmable output voltage.
Part Selection
Output
Voltage
0.75 V - 3.63 V
1
Input
Voltage
Max. Output
Current
Max. Output
Power
Typical
Efficiency
Model Number
Active Low
Model Number
Active High
2.4 V - 5.5 V
6A
21.8 W
93%
SRBA-06F1AL
SRBA-06F1A0
Notes: 1. These modules use a buck topology, so the output voltages must be 0.5 V less than the input voltage.
2. Add “G” to the end of the Model Number to indicate Tray Packaging.
3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.
Absolute Maximum Ratings
Min
Typ
Max
Input Voltage (continuous)
Parameter
-0.3 V
-
5.8 V
Output Enable Terminal Voltage
-0.3 V
-
5.5 V
Ambient Temperature
-40 °C
-
85 °C
Storage Temperature
-55 °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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/6 A Output
Input Specifications
Parameter
Input Voltage
Input Current (full load)
Min
2.4 V
Typ
-
Max
5.5 V
Notes
Vo, set ≤ Vin-0.5 V
Vo=3.3V
Vo=2.5V
Vo=1.8V
Vo=1.5V
Vo=1.2V
Vo=0.75V
-
-
4.73 A
3.66 A
4.09 A
4.31 A
3.57 A
2.40 A
Vo=3.3 V
Vo=0.75 V
Remote Off Input Current
-
50 mA
25 mA
0.6 mA
-
Input Reflected Ripple Current (pk-pk)
-
120 mA
-
Input Reflected Ripple Current (rms)
-
35 mA
-
-
-
0.04 A s
Turn-on Voltage Threshold
-
2.05 V
2.4 V
Turn-off Voltage Threshold
1.8 V
2.0 V
-
Input Current (no load)
2
I t Inrush Current Transient
Tested with simulated source impedance
of 1 uH, 5 Hz to 20 MHz, one 1000 uF/25 V
AL capacitor and two 100 uF/ 10 V
Tantalum capacitor at the input.
2
Note: All specifications are typical at nominal input, full load at 25 °C unless otherwise stated.
Output Specifications
Parameter
Output Voltage Set Point
Min
-2% Vo,set
Typ
-
Max
2% Vo,set
Output Voltage Set Point
-3% Vo,set
-
3% Vo,set
0.7525 V
-
3.63 V
-
0.4% Vo,set
0.3% Vo,set
-
Io=Iomin to 50%Iomax
Vin=50% Vinmin to Vinmax
-
0.4% Vo,set
-
Tref=Tamin to Tamax
0A
9A
-
6A
18 A
Short Circuit Surge Transient
-
0.32 A s
-
Ripple and Noise (pk-pk)
-
40 mV
70 mV
Ripple and Noise (rms)
-
10 mV
30 mV
6 mS
-
10 mS
3%
-
1000 uF
3000 uF
Adjustment Range Selected by
External Resistor or Voltage
Load Regulation
Line Regulation
Regulation Over Temperature
(-40 °C to +85 °C)
Output Current
Current Limit Threshold
Turn on Time
Overshoot at Turn on
Output Capacitance
ESR ≥ 1mohm
0 uF
0 uF
ESR ≥ 10mohm
Transient Response
50% ~ 100% Max Load
Settling Time VO = 0.75 V 3.63 V
100% ~ 50% Max Load
Settling Time
2
-
130 mV
25 uS
130 mV
25 uS
Notes
Vin=5 V, lo=50%lo,max
Over all operating input voltages,
resistive loads and temperature
conditions
Tested with 0-20 MHz, with 10 uF
Tantalum capacitor & 1 uF/10 V
ceramic capacitor at the output.
-
di/dt=2.5 A/uS; Vin=5 V; and with
10 uF Tantalum capacitor & 1
uF/10 V TDK ceramic capacitor 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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/6 A Output
General Specifications
Parameter
Min
Typ
Max
-
93%
91%
88%
87%
84%
78%
-
250 kHz
300 kHz
350 kHz
-
135 °C
-
0.7525 V
-
3.63 V
Notes
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
MTBF
Measured at Vin=5 V, full load
Calculated Per Bell Core SR-332 (Vin=5 V;
Vo=0.75 V; IO = 4.8 A; Ta = 25°C)
6,954,974 hours
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
-
Note: All specifications are typical at 25 °C unless otherwise stated.
Control Specifications
Parameter
Min
Typ
Max
Notes
Signal Low (Unit Off)
-0.2 V
-
0.3 V
Signal High (Unit On)
-
-
Vin, max
SRBA-06F1A0; Remote On/Off pin open, Unit
on.
Signal Low (Unit On)
-0.2 V
-
0.3 V
Signal High (Unit Off)
1.5 V
-
Vin, max
Remote On/Off
SRBA-06F1AL; Remote On/Off pin open, Unit
on.
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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/6 A Output
Remote Enable Specifications
The SRBA-06F1AL modules feature an enable
pin with negative logic. If not using the enable
pin, leave the pin open (the module will be on).
During logic_high, the module is turned off,
during logic_low, the module is turned on. It inner
circuit impedance is showed as figure.
SRBA-06F1AL
The SRBA-06F1A0 modules feature an enable
pin with Positive logic. If not using the enable pin,
leave the pin open (the module will be on).
During logic_high, the module is turned on,
during logic_low, the module is turned off. It inner
circuit impedance is showed as figure.
SRBA-06F1A0
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
Rtrim
21.07
=
− 5.11
Vadj − 0.7525
Module Trim
Rtrim
GND
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.
Vout
Vtrim = 0.7 − 0.1698 × (Vadj − 0.7525)
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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/6 A Output
Efficiency Data
2.5 V Module
100.0%
100.0%
95.0%
95.0%
90.0%
90.0%
85.0%
4.5 V
5.0 V
5.5 V
80.0%
75.0%
Efficiency
Efficiency
3.3 V Module
70.0%
70.0%
65.0%
65.0%
0.6 A
60.0%
1.5 A
3.0 A
4.5 A
0.6 A
6.0 A
1.5 V Module
90.0%
85.0%
3.0 V
5.0 V
5.5 V
80.0%
Efficiency
95.0%
90.0%
75.0%
85.0%
70.0%
65.0%
65.0%
4.5 A
2.4 V
5.0 V
5.5 V
80.0%
70.0%
3.0 A
6.0 A
75.0%
60.0%
60.0%
0.6 A
6.0 A
1.5 A
Output Current
3.0 A
4.5 A
6.0 A
Output Current
0.7525 V Module
1.2 V Module
100.0%
100.0%
95.0%
95.0%
90.0%
90.0%
85.0%
2.4 V
5.0 V
5.5 V
80.0%
75.0%
Efficiency
Efficiency
4.5 A
1.8 V Module
95.0%
85.0%
2.4 V
5.0 V
5.5 V
80.0%
75.0%
70.0%
70.0%
65.0%
65.0%
60.0%
0.6 A
3.0 A
Output Current
100.0%
1.5 A
1.5 A
Output Current
100.0%
0.6 A
4.5 V
5.0 V
5.5 V
80.0%
75.0%
60.0%
Efficiency
85.0%
60.0%
1.5 A
3.0 A
Output Current
4.5 A
6.0 A
0.6 A
1.5 A
3.0 A
4.5 A
6.0 A
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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/6 A Output
Thermal Derating Curves
Vin=5 V, Vo = 3.3 V
Vin=4.5 V, Vo = 2.5 V
Vin=5 V, Vo = 0.75 V
Vin=3.3 V, Vo = 0.75 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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/6 A Output
Ripple and Noise Waveforms
Ripple and noise at full load, Vin=5.0 V, Vo=0.7525 V
Ripple and noise at full load, Vin=5.0 V, Vo=1.2 V
Ripple and noise at full load, Vin=5.0 V, Vo=1.5 V
Ripple and noise at full load, Vin=5.0 V, Vo=1.8 V
Ripple and noise at full load, Vin=5.0 V, Vo=2.5 V
Ripple and noise at full load, Vin=5.0 V, Vo=3.3 V
Note: Ripple and noise is tested at 0-20 MHz BW, 10 uF/10 V tantalum capacitor and 1 uF/10 V ceramic
capacitor, 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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/6 A Output
Transient Response Waveforms
50% to 100% load step at Vin=5 V, Vo=0.75 V
100% to 50% load step at Vin=5 V, Vo=0.75 V
50% to 100% load step at Vin=5 V, Vo=1.2 V
100% to 50% load step at Vin=5 V, Vo=1.2 V
50% to 100% load step at Vin=5 V, Vo=1.5 V
100% to 50% load step 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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/6 A Output
Transient Response Waveforms (continued)
50% to 100% load step at Vin=5 V, Vo=1.8 V
100% to 50% load step at Vin=5 V, Vo=1.8 V
50% to 100% load step at Vin=5 V, Vo=2.5 V
100% to 50% load step at Vin=5 V, Vo=2.5 V
50% to 100% load step at Vin=5 V, Vo=3.3 V
100% to 50% load step at Vin=5 V, Vo=3.3 V
Note: Transient response is tested at di/dt=2.5 A/uS, with 10 uF/10 V tantalum capacitor and 1 uF/10 V ceramic
capacitor, 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
2.4 Vdc - 5.5 Vdc Input
0.75 Vdc - 3.63 Vdc/6 A Output
Mechanical Outline
RECOMMENDED PAD LAYOUT
Pin Connections
Pin
Function
1
Remote On/Off
2
Vin
3
Ground
4
Trim
5
Vout
PAD SIZE:
MIN: 0.12"* 0.095" (3.05mm * 2.41mm)
MAX: 0.135"* 0.11" (3.43mm * 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. 011207
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