BEL V7BA

NON-ISOLATED DC/DC CONVERTERS
4.5V-14V Input
0.75V-5.0V/3A Output
V7BA-03E1Ax Series
•
Non-Isolated
•
OCP/SCP
•
Fixed Frequency
•
Remote On/Off
•
High Efficiency
•
Wide Trim Range
•
High Power Density
•
Wide Input Range
•
Under-voltage Lockout (UVLO)
•
Active Low/High (Option)
Description
The Bel V7BA-03E1Ax modules are a series of non-isolated DC/DC converters that deliver up to 3A of output
current with full load efficiency of 93% at 5.0V output. These modules provide precisely regulated voltage
programmable via external resistor from 0.75V to 5.0V 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
0.75V – 5.0V
Input
Voltage
4.5V - 14V
Max. Output
Current
3A
Max. Output
Power
15W
Typical Efficiency
at 5.0V
93%
Model Number
Active High
V7BA-03E1A0
Model Number
Active Low
V7BA-03E1AL
Note: Add “G” suffix at the end of the model number to indicate “Tray Packaging”.
Absolute Maximum Ratings
Parameter
Input Voltage (continuous)
Output Enable Terminal Voltage
Ambient Temperature
Storage Temperature
Min
-0.3V
-0.3V
-40°C
-55°C
Typ
-
Max
15V
15V
85°C
125°C
Notes
Note: All specifications are typical at 25°C unless otherwise stated.
Input Specifications
Parameter
Min
Typ
Max
4.5V
7.0V
12V
12V
14V
14V
Vo=5.0V
Vo=3.3V
Vo=0.75V
-
1.35A
1.00A
0.25A
3.70A
2.50A
0.65A
Vo=5.0V
Vo=3.3V
Vo=0.75V
-
65mA
50mA
15mA
3mA
80mA
60mA
20mA
6mA
-
150mA
100mA
35mA
200mA
150mA
60mA
Notes
Input Voltage
Vo,set≤3.3V
Vo,set=5V
Input Current (full load)
Input Current (no load)
Remote Off Input Current
Input Reflected Ripple Current (pk-pk)
Vo=5.0V
Vo=3.3V
Vo=0.75V
Tested with simulated source
impedance of 1uH, 5Hz to 20MHz and
two 100uF/25V external input Tantalum
capacitors.
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
4.5V-14V Input
0.75V-5.0V/3A Output
Input Specifications (continued)
Parameter
Input Reflected Ripple Current (RMS)
Vo=5.0V
Vo=3.3V
Vo=0.75V
I2t Inrush Current Transient
Turn-on Voltage Threshold
Vo set=5V
Vo set≤3.3V
Turn-off Voltage Threshold
Vo set=5V
Vo set≤3.3V
Min
Typ
Max
-
50mA
30mA
12mA
0.01A2s
70mA
50mA
20mA
0.02A2s
-
5.5V
4.3V
6.5V
4.5V
3.8V
3.8V
5.5V
4.0V
6.0V
4.3V
Notes
Tested with simulated source
impedance of 1uH, 5Hz to 20MHz and
two 100uF/25V external input Tantalum
capacitors.
Note: All specifications are typical 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
-3.5%Vo,set
-
2.5%Vo,set
Load Regulation
Line Regulation
Regulation Over Temperature
Output Current
Current Limit Threshold
Short Circuit Surge Transient
Ripple and Noise (pk-pk)
Vo=5.0V
Vo=3.3V
Vo=0.75V
Ripple and Noise (RMS)
Vo=5.0V
Vo=3.3V
Vo=0.75V
Ripple and Noise (pk-pk)
Vo=5.0V
Vo=3.3V
Vo=0.75V
Ripple and Noise (RMS)
Vo=5.0V
Vo=3.3V
Vo=0.75V
Turn on Time
Overshoot at Turn on
Output Capacitance
0.4%Vo,set
0.5%Vo,set
0A
5A
-
0.3%Vo,set
0.3%Vo,set
0.5%Vo,set
2
0.1A s
0.4%Vo,set
0.5%Vo,set
3A
9.5A
0.2A2s
-
130mV
100mV
35mV
150mV
120mV
45mV
-
40mV
30mV
10mV
50mV
40mV
20mV
-
70mV
55mV
20mV
85mV
70mV
30mV
0uF
20mV
15mV
5mV
8mS
0%
-
30mV
25mV
10mV
12mS
3%
1200uF
Notes
Vin=12V, lo=lomax,
Over all operating input voltage,
resistive load, and temperature
conditions
lo=lomin to lomax
Vin=Vinmin to Vinmax
-40°C to +85°C
Test conditions:
0-20MHz BW, with external 10uF/10V
Tantalum capacitor and 1uF/10V
ceramic capacitor at the output.
Test conditions:
0-20MHz BW, with external 10uF/10V
Tantalum capacitor 1uF/10V ceramic
capacitor and two 22uF/10V ceramic
capacitors at the output.
Transient Response
50% ~ 100% Max Load
Settling Time
100% ~ 50% Max Load
Settling Time
All
-
200mV
20uS
200mV
20uS
300mV
50uS
300mV
50uS
Test conditions: di/dt = 2.5A/uS,
Vin=12V, and with external 10uF/10V
Tantalum capacitor and 1uF/10V
ceramic capacitor at the output.
Note: All specifications are typical at nominal input (Vin=12V), 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
4.5V-14V Input
0.75V-5.0V/3A Output
General Specifications
Parameter
Min
Typ
Max
90%
88%
77%
200KHz
93%
91%
80%
230KHz
250KHz
0.7525V
-
5V
Notes
Efficiency
Vo=5.0V
Vo=3.3V
Vo=0.75V
Switching Frequency
Output Voltage Trim Range (Wide
Trim)
MTBF
Calculated Per Bell Core TR-332 (IO =
Nominal; Ta = 25°C)
7,900,000 hours
Dimensions (Vertical Mount)
Inches (L × W × H)
Millimeters (L × W × H)
Weight
-
1.0 x 0.5 x 0.27
25.41 x 12.7 x 6.85
2.5g
Measured at Vin=12V, full load
-
Note: All specifications are typical at 25°C unless otherwise stated.
Control Specifications
Parameter
Remote On/Off
Min
Typ
Max
-0.3V
-
0.4V
Signal High (Unit On)
2.5V
-
14V
Signal Low (Unit On)
-0.3V
-
0.4V
Signal High (Unit Off)
2.5V
-
14V
Signal Low (Unit Off)
Notes
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
Rtrim =
10.507
−1
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 − 0.0667 × (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
4.5V-14V Input
0.75V-5.0V/3A Output
Efficiency Data
MODULE 5.0V
EFFICIENCY
100.0%
90.0%
80.0%
7.0V
70.0%
12.0V
14.0V
60.0%
0.30A
0.75A
1.50A
2.25A
OUTPUT CURRENT
3.00A
EFFICIENCY
MODULE 3.3V
95.0%
90.0%
85.0%
80.0%
75.0%
70.0%
65.0%
60.0%
0.30A
4.5V
12.0V
14.0V
0.75A
1.50A
2.25A
OUTPUT CURRENT
3.00A
MODULE 0.75V
EFFICIENCY
90.0%
80.0%
70.0%
4.5V
12.0V
60.0%
14.0V
50.0%
0.30A
1.75A
1.50A
2.25A
OUTPUT CURRENT
3.00A
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
4.5V-14V Input
0.75V-5.0V/3A Output
Thermal Derating Curves
Vin=12V, Vo=5.0V
Vin=12V, Vo=3.3V
Vin=12V, Vo=0.75V
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
4.5V-14V Input
0.75V-5.0V/3A Output
Pin Connections
Pin
Function
1
Vout
2
Trim
3
Ground
4
N/A
5
Vin
6
Remote On/Off
©2005 Bel Fuse Inc. Specifications subject to change without notice. 020605
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