View VRBA-03E1A0_1105215.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

NON-ISOLATED DC/DC CONVERTERS
4.5 V-14 V Input 0.75 V-5.0 V/3 A Output
VRBA-03E1Ax Series
* * * * * Non-Isolated Fixed Frequency High Efficiency High Power Density Under-voltage Lockout (UVLO)
RoHS Compliant
* * * * * OCP/SCP Remote On/Off Wide Trim Range Wide Input Range Active Low/High (Option)
Description
The Bel VRBA-03E1Ax modules are a series of non-isolated dc/dc converters that deliver up to 3 A of output current with full load efficiency of 93% at 5.0 V output. These modules provide precisely regulated voltage programmable via external resistor from 0.75 V to 5.0 V 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 1 0.75 V - 5 V Input Voltage 4.5 V - 14 V Max. Output Current 3A Max. Output Power 15 W Typical Efficiency at 5.0V 93% Model Number Active High VRBA-03E1A0 Model Number Active Low VRBA-03E1AL
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.
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 Input Current (full load) Vo=5.0 V Vo=3.3 V Vo=0.75 V Input Current (no load) Vo=5.0 V Vo=3.3 V Vo=0.75 V Remote Off Input Current Input Reflected Ripple Current (pk-pk) Vo=5.0 V Vo=3.3 V Vo=0.75 V 65 mA 50 mA 15 mA 3 mA 150 mA 100 mA 35 mA 80 mA 60 mA 20 mA 6 mA 200 mA 150 mA 60 mA Tested with simulated source impedance of 1 uH, 5 Hz to 20 MHz and two 100 uF/25 V external input Tantalum capacitors. Min 4.5 V Typ 1.35 A 1.00 A 0.25 A Max 14 V 3.70 A 2.50 A 0.65 A Notes Vo, set Vin-0.5 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 V-14 V Input 0.75 V-5.0 V/3 A Output
Input Specifications (continued)
Parameter Input Reflected Ripple Current (rms) Vo=5.0 V Vo=3.3 V Vo=0.75 V 2 I t Inrush Current Transient Turn-on Voltage Threshold Vo set=5 V Vo set3.3 V Turn-off Voltage Threshold Vo set=5 V Vo set3.3 V Min 3.8V 3.8V Typ 50 mA 30 mA 12 mA 2 0.01 A s 5.5 V 4.3 V 5.5 V 4.0 V Max 70 mA 50 mA 20 mA 2 0.02 A s 6.5 V 4.5 V 6.0 V 4.3 V Notes Tested with simulated source impedance of 1 uH, 5 Hz to 20 MHz and two 100 uF/25 V external input Tantalum capacitors.
Note: All specifications are typical at 25 C unless otherwise stated.
Output Specifications
Parameter Output Voltage Set Point Output Voltage Set Point Load Regulation Line Regulation Regulation Over Temperature Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (pk-pk) Vo=5.0 V Vo=3.3 V Vo=0.75 V Ripple and Noise (rms) Vo=5.0 V Vo=3.3 V Vo=0.75 V Ripple and Noise (pk-pk) Vo=5.0 V Vo=3.3 V Vo=0.75 V Ripple and Noise (rms) Vo=5.0 V Vo=3.3 V Vo=0.75 V Turn on Time Overshoot at Turn on Output Capacitance Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time 200 mV 20 uS 200 mV 20 uS 300 mV 50 uS 300 mV 50 uS Test conditions: di/dt = 2.5 A/uS, Vin=12 V, and with external 10 uF/ 10 V Tantalum capacitor and 1 uF/ 10 V ceramic capacitor at the output. Min -2%Vo,set -3.5%Vo,set 0.4%Vo,set 0.5%Vo,set 0A 5A 0 uF Typ 0.3%Vo,set 0.3%Vo,set 0.5%Vo,set 2 0.1 A s 130 mV 100 mV 35 mV 40 mV 30 mV 10 mV 70 mV 55 mV 20 mV 20 mV 15 mV 5 mV 8 mS 0% Max 2%Vo,set 2.5%Vo,set 0.4%Vo,set 0.5%Vo,set 3A 9.5 A 2 0.2 A s 150 mV 120 mV 45 mV 50 mV 40 mV 20 mV 85 mV 70 mV 30 mV 30 mV 25 mV 10 mV 12 mS 3% 1200 uF Notes Vin=12 V, 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: 0-20 MHz BW, with external 10 uF/ 10 V Tantalum capacitor and 1 uF/ 10 V ceramic capacitor at the output.
Test conditions: 0-20 MHz BW, with external 10 uF/ 10 V Tantalum capacitor 1 uF/10 V ceramic capacitor and two 22 uF/10 V ceramic capacitors at the output.
All
Note: All specifications are typical at nominal input (Vin=12 V), 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 V-14 V Input 0.75 V-5.0 V/3 A Output
General Specifications
Parameter Efficiency Vo=5.0 V Vo=3.3 V Vo=0.75 V Switching Frequency Output Voltage Trim Range (Wide Trim) MTBF Dimensions (Vertical Mount) Inches (L x W x H) Millimeters (L x W x H) Weight 90% 88% 77% 200 kHz 0.7525 V 93% 91% 80% 230 kHz 7,900,000 hours 1.0 x 0.5 x 0.27 25.41 x 12.7 x 6.85 2.5 g 250 kHz 5V Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) Measured at Vin=12 V, full load Min Typ Max Notes
-
-
Note: All specifications are typical at 25 C unless otherwise stated.
Control Specifications
Parameter Remote On/Off Signal Low (Unit Off) Signal High (Unit On) Signal Low (Unit On) Signal High (Unit Off) Min -0.3 V 2.5 V -0.3 V 2.5 V Typ Max 0.4 V 14 V 0.4 V 14 V Remote On/Off pin open, Unit on. Notes
Output Trim Equations
Equation for calculating the trim resistor (in k) 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
GND
Rtrim
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 x (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
4.5 V-14 V Input 0.75 V-5.0 V/3 A Output
Efficiency Data
MODULE 5.0V 100.0% EFFICIENCY 90.0% 80.0% 70.0% 60.0% 0.30A 0.75A 1.50A 2.25A OUTPUT CURRENT 7.0V 12.0V 14.0V 3.00A
MODULE 3.3V 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 0.30A 0.75A 1.50A 2.25A OUTPUT CURRENT
EFFICIENCY
4.5V 12.0V 14.0V 3.00A
MODULE 0.75V 90.0% EFFICIENCY 80.0% 70.0% 60.0% 50.0% 0.30A 4.5V 12.0V 14.0V 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
4.5 V-14 V Input 0.75 V-5.0 V/3 A Output
Thermal Derating Curves
Vin=12 V, Vo=5.0 V
Vin=12 V, Vo=3.3 V
Vin=12 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
4.5 V-14 V Input 0.75 V-5.0 V/3 A Output
Mechanical Outline
Pin Connections
Pin 1 2 3 4 5 6 Function Vout Trim Ground N/A Vin Remote On/Off
RoHS Compliance
Complies with the European Directive 2002/95/EC, calling for the elimination of lead and other hazardous substances from electronic products.
(c)2005 Bel Fuse Inc. Specifications subject to change without notice. 111005
CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com
FAR EAST 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
EUROPE 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

▲Up To Search▲

Price & Availability of VRBA-03E1A0

	To Download VRBA-03E1A0 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .