NON-ISOLATED DC/DC CONVERTERS 10 Vdc - 14 Vdc Input 0.75 Vdc - 6.0 Vdc/6 A Output VRBA-06A1Ax RoHS Compliant Rev.A • Non-Isolated • Under-Voltage Lockout (UVLO) • High Efficiency • OCP/SCP • High Power Density • Remote On/Off • Fixed Frequency • Wide Trim Range Description The Bel VRBA-06A1Ax modules are a series of non-isolated dc/dc converters that can deliver up to 6 A of output current with full load efficiency of 92% at 6.0 Vdc output. These modules provide precisely regulated voltage programmable via external resistor from 0.75 Vdc to 6.0 Vdc over input voltage (10 Vdc - 14 Vdc). 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 Input Voltage Max. Output Current Max. Output Power Typical Efficiency at 6.0 Vdc Model Number Active Low Model Number Active High 0.75 V - 6.0 V 10 V - 14 V 6A 36W 92% VRBA-06A1AL VRBA-06A1A0 Notes: 1.Add “G” suffix at the end of the model number to indicate Tray Packaging. 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. Absolute Maximum Ratings Parameter Min Typ Max Input Voltage (continuous) -0.3 V - 15 V Output Enable Terminal Voltage -0.3 V - 15 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. Input Specifications Parameter Input Voltage Input Current (full load) Min 10 V Typ 12 V Max 14 V Vo=6.0 V Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=0.75 V - 3.5 A 2.8 A 1.9 A 1.5 A 1.1 A 0.55 A - Vo=6.0 V Vo=0.75 V - 3 mA 100 mA 20 mA 5 mA Notes Input Current (no load) Remote Off Input 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 10 Vdc - 14 Vdc Input 0.75 Vdc - 6.0 Vdc/6 A Output Input Specifications (continued) Parameter Input Reflected Ripple Current (pk-pk) Min Typ Max Notes - 120 mA - - 40 mA - Tested with two 100 uF/25 V tan input capacitors & simulated source impedance of 1uH, 5 Hz to 20 MHz. - 0.002 A s Input Reflected Ripple Current (rms) 2 I t Inrush Current Transient 2 2 0.02 A s Turn-on Voltage Threshold - 9.5 V 9.8 V Turn-off Voltage Threshold - 9.0 V 9.5 V Output Specifications Parameter Output Voltage Set Point Min -2%Vo,set Typ - Max 2%Vo,set Output Voltage Set Point -2.5%Vo,set - 3.5%Vo,set Load Regulation - 0.4%Vo,set - Notes Vin=12 V, full load Over all operating input voltages, resistive loads and temperature conditions Io=Io, min to Io, max Line Regulation Regulation Over Temperature (-40 °C to +85 °C) Output Current - 0.3%Vo,set - Vin=Vin, min to Vin, max - 0.5%Vo,set - Tref=Ta, min to Ta, max 0A - 6A Current Limit Threshold 7A - - 0.25 A s 2 - Vo=6.0 V Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=0.75 V - 85 mV 75 mV 60 mV 50 mV 40 mV 20 mV - Vo=6.0 V Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=0.75 V - 30 mV 25 mV 20 mV 15 mV 12 mV 7 mV 15 mS 25 mS Overshoot at Turn on Output Capacitance ESR ≥ 1mohm ESR ≥ 10mohm Transient Response - 0% 3% 0 uF 0 uF - 1000 uF 3300 uF Short Circuit Surge Transient 15 A Ripple and Noise (pk-pk) Tested with 0-20 MHz, with 10 uF/10 V tantalum capacitor and 1uF/10 V ceramic capacitor at the output Ripple and Noise (rms) Turn on Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO = 0.75 V 6.0 V - 200 mV - - 50 uS - - 200 mV - - 50 uS - di/dt=2.5 A/uS; Vin=12 V; and with 10 uF/10 V tantalum capacitor and 1uF/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 10 Vdc - 14 Vdc Input 0.75 Vdc - 6.0 Vdc/6 A Output General Specifications Parameter Min Typ Max 280 kHz - 92% 90% 88% 85% 83% 71% 300 kHz 135 °C 320 kHz - Notes Efficiency Vo=6.0 V Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=0.75 V Switching Frequency Over Temperature Shutdown MTBF Measured at Vin=12 V, full load Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) 3,266,517 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 3g - 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) Output Voltage Trim Range (Wide Trim) Min Typ Max Notes -0.3 V 2.5 V -0.3 V 2.5 V - 0.4 V 14 V 0.4 V 14 V VRBA-06A1A0; Remote On/Off pin open, Unit on. VRBA-06A1AL; Remote On/Off pin open, Unit on. 0.7525 V - 6.3 V 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 10 Vdc - 14 Vdc Input 0.75 Vdc - 6.0 Vdc/6 A Output Efficiency Data MODULE 3.3V 100.0% 95.0% 90.0% 85.0% 80.0% 75.0% 10V 12.0 14.0 EFFICIENCY EFFICIENCY MODULE 5.0V 90.0% 10.0 12.0 14.0 80.0% 70.0% 60.0% 1A 2A 3A 4A 5A 6A 1A OUTPUT CURRENT 3A 4A 5A 6A OUTPUT CURRENT MODULE 1.8V MODULE 0.75V 90.0% 10.0 12.0 14.0 80.0% 70.0% 60.0% EFFICIENCY 100.0% EFFICIENCY 2A 90.0% 80.0% 10.0 12.0 14.0 70.0% 60.0% 50.0% 1A 2A 3A 4A 5A OUTPUT CURRENT 6A 1A 2A 3A 4A 5A 6A 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 10 Vdc - 14 Vdc Input 0.75 Vdc - 6.0 Vdc/6 A Output Thermal Derating Curves Vin=12 V, Vo=0.75 V Vin=12 V, Vo=2.5 V Vin=12 V, Vo=3.3 V Vin=12 V, Vo=6.0 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 10 Vdc - 14 Vdc Input 0.75 Vdc - 6.0 Vdc/6 A Output Ripple and Noise Waveforms Ripple and noise at full load, Vin=12 V, Vo=0.75 V Ripple and noise at full load, Vin=12 V, Vo=2.5 V Ripple and noise at full load, Vin=12 V, Vo=6.0 V Note: The output 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 10 Vdc - 14 Vdc Input 0.75 Vdc - 6.0 Vdc/6 A Output Transient Response Waveforms 50% to 100% load step at Vin=12 V, Vo=0.75 V 100% to 50% load step at Vin=12 V, Vo=0.75 V 50% to 100% load step at Vin=12 V, Vo=1.8 V 100% to 50% load step at Vin=12 V, Vo=1.8 V 50% to 100% load step at Vin=12 V, Vo=6.0 V 100% to 50% load step at Vin=12 V, Vo=6.0 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 10 Vdc - 14 Vdc Input 0.75 Vdc - 6.0 Vdc/6 A Output Mechanical Outline Pin Connections Pin Function 1 Vout 2 Trim 3 Ground 4 No Pin 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