NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/3 A Output VRBA-03E1Ax RoHS Compliant Rev.A • 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 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 Vdc output. These modules provide precisely regulated voltage programmable via external resistor from 0.75 Vdc to 5.0 Vdc over a wide range of input voltage. Their openframe 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. 3. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. 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 Min Typ Max 7.0 V 4.5 V 12 V 12 V 14 V 14 V Vo=5.0 V Vo=3.3 V Vo=0.75 V - 1.35 A 1.00 A 0.25 A 3.70 A 2.50 A 0.65 A Vo=5.0 V Vo=3.3 V Vo=0.75 V - 65 mA 50 mA 15 mA 3 mA 80 mA 60 mA 20 mA 6 mA - 150 mA 100 mA 35 mA 200 mA 150 mA 60 mA Notes Input Voltage Vo set=5 V Vo set≤3.3 V Input Current (full load) Input Current (no load) Remote Off Input Current Input Reflected Ripple Current (pk-pk) Vo=5.0 V Vo=3.3 V Vo=0.75 V Tested with simulated source impedance of 1 uH, 5 Hz to 20 MHz and two 100 uF/25 V 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/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 set≤3.3 V Turn-off Voltage Threshold Vo set=5 V Vo set≤3.3 V Min Typ Max - 50 mA 30 mA 12 mA 2 0.01 A s 70 mA 50 mA 20 mA 2 0.02 A s - 5.5 V 4.3 V 6.5 V 4.5 V 3.8 V 3.8 V 5.5 V 4.0 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 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 0.4%Vo,set 0.5%Vo,set 0A 5A 0.3%Vo,set 0.3%Vo,set 0.5%Vo,set - 0.4%Vo,set 0.5%Vo,set 3A 9.5 A - 0.1 A s 0.2 A s - 130 mV 100 mV 35 mV 150 mV 120 mV 45 mV - 40 mV 30 mV 10 mV 50 mV 40 mV 20 mV - 70 mV 55 mV 20 mV 85 mV 70 mV 30 mV 0 uF 20 mV 15 mV 5 mV 8 mS 0% - 30 mV 25 mV 10 mV 12 mS 3% 1200 uF 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 2 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 2 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. Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time All - 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. 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 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/3 A Output General Specifications Parameter Min Typ Max 90% 88% 77% 200 kHz 93% 91% 80% 230 kHz 250 kHz 0.7525 V - 5V Notes Efficiency Vo=5.0 V Vo=3.3 V Vo=0.75 V Switching Frequency Output Voltage Trim Range (Wide Trim) MTBF Calculated Per Bell Core SR-332 (IO = 80% load; 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 2.5 g Measured at Vin=12 V, full load - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Remote On/Off Min Typ Max Signal Low (Unit Off) -0.3 V - 0.4 V Signal High (Unit On) 2.5 V - 14 V Signal Low (Unit On) -0.3 V - 0.4 V Signal High (Unit Off) 2.5 V - 14 V 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/3 A 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 60.0% 50.0% 0.30A 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 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/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 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/3 A Output Ripple and Noise Waveforms 12 Vdc input, 0.75 Vdc output 12 Vdc input, 3.3 Vdc output 12 Vdc input, 5.0 Vdc output Note: Ripple and noise at full load, 0-20 MHz BW, with 10 uF/10 V tantalum cap and 1 uF/10 V ceramic cap at the output, and 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/3 A Output Transient Response Waveforms Transients 50% to 100% load 0.75 Vdc output Transients 100% to 50% load 0.75 Vdc output Transients 50% to 100% load 3.3 Vdc output Transients 100% to 50% load 3.3 Vdc output Transients 50% to 100% load 5.0 Vdc output Transients 100% to 50% load 5.0 Vdc output Note: Transient response at 12 Vdc input, di/dt=2.5 A/uS, with 10 uF/10 V tantalum cap and 1 uF/10 V ceramic cap at the output, 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/3 A Output Mechanical Outline Pin Connections Pin Function 1 Vout 2 Trim 3 Ground 4 N/A 5 Vin 6 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. ©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