NON-ISOLATED DC/DC CONVERTERS 8.3 Vdc - 14 Vdc Input VRBA-06A2Ax 0.75 Vdc - 5.5 Vdc/6 A Output RoHS Compliant Rev.A • Non-Isolated • Under-Voltage Lockout (UVLO) • High Efficiency • OCP/SCP • High Power Density • Wide Input Range • Fixed Frequency • Wide Trim Range • Remote On/Off • Flexible Output Voltage Sequencing • Active Low/High (Option) Description The Bel VRBA-06A2Ax modules are a series of non-isolated dc/dc converters that deliver up to 6 A of output current with full load efficiency of 92% at 5.0 Vdc output. These modules provide precisely regulated voltage programmable via external resistor from 0.75 Vdc to 5.5 Vdc over a wide range of input voltage (8.3 Vdc - 14 Vdc). These modules have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple voltages on a board. 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 current protection, wide input, and programmable output voltage. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number Active Low Model Number Active High 0.75 V - 5.5 V 8.3 V - 14 V 6A 33 W 92% VRBA-06A2AL VRBA-06A2A0 Notes: 1.Change the last character “L” to “C” to indicate 0.20’’ pin length. 2. Add “G” suffix at 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 - 15 V Output Enable Terminal Voltage -0.3 V - 15 V 1 -0.3 V - Vin Ambient Temperature -40 °C - 85 °C Storage Temperature -55 °C - 125 °C Sequencing Voltage Notes Notes: All specifications are typical at 25 °C unless otherwise stated. 1. VRBA-06A2Ax series of modules include a sequencing feature that enables users to implement various types of output voltage sequencing in their applications. This is accomplished via an additional sequencing pin. When the sequencing feature is not used, tie the SEQ pin to Vin or leave the SEQ pin floating. 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.5 Vdc/6 A Output Input Specifications Parameter Input Voltage Min 8.3 V Typ 12 V Max 14 V Notes Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=0.75 V - 2.75 A 1.85 A 1.45 A 1.05 A 0.55 A 4.0 A 2.8 A 2.2 A 1.6 A 0.8 A Vo=5.0 V Vo=0.75 V Remote Off Input Current Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) - 1 mA 100 mA 20 mA 2 mA - 120 mA - - 40 mA - - 0.002 A s Input Current (full load) Input Current (no load) 2 I t Inrush Current Transient 2 Tested with two 100 uF/25 V tantalum input capacitors & simulated source impedance of 1uH, 5 Hz to 20 MHz. 2 0.02 A s Turn-on Voltage Threshold - 8.1 V 8.2 V Turn-off Voltage Threshold - 7.5 V 8.0 V Note: All specifications are typical at 25 °C unless otherwise stated. Output Specifications Parameter Output Voltage Set Point Output Voltage Set Point Min Typ Max -2%Vo,set - 2%Vo,set Notes Vin=12 V, lo=lomax Over all operating input voltages, resistive loads and temperature conditions -2.5%Vo,set - 3.5%Vo,set 0.7525 V - 5.5 V Load Regulation -0.5%Vo,set 0.4%Vo,set 0.5%Vo,set Io=Io, min to Io, max Line Regulation -0.4%Vo,set 0.3%Vo,set 0.4%Vo,set Vin=Vin, min to Vin, max - 0.5%Vo,set - Tref=Ta, min to Ta, max 0A - 6A 7.2 A - Adjustment Range Selected by External Resistor or Voltage Regulation Over Temperature (-40 °C to +85 °C) Output Current Current Limit Threshold Short Circuit Surge Transient 18 A - 2 0.25 A s - Vo=0.75 V Vo=3.3 V Vo=5.0 V - 20 mV 60 mV 75 mV - Vo=0.75 V Vo=3.3 V Vo=5.0 V - 7 mV 20 mV 25 mV 8 mS 10 mS - 0% 3% 0 uF 0 uF - 1000 uF 3000 uF Ripple and Noise (pk-pk) Ripple and Noise (rms) Turn on Time Overshoot at Turn on Output Capacitance ESR ≥ 1mohm ESR ≥ 10mohm Tested with 0-20 MHz, with 10 uF/10 V tantalum capacitor & 1uF/10 V TDK ceramic capacitor at the output. 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.5 Vdc/6 A Output Output Specifications (continued) Parameter Min Typ Max Notes Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load VO = 0.75 V 5.5 V Settling Time - 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 & 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. General Specifications Parameter Min Typ Max Notes 87% 85% 82% 80% 68% 90% 88% 85% 83% 71% - 250 kHz 300 kHz 350 kHz Over Temperature Shutdown - 135 °C - Output Trim Range (wide trim) 0.7525 V - 5.5 V Efficiency Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=0.75 V Switching Frequency 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 x 0.5 x 0.243 25.4 x12.7 x 6.16 3g - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Min Typ Max Notes Signal Low (Unit Off) -0.3 V - 0.4 V Signal High (Unit On) 2.5 V - 14 V VRBA-06A2A0; Remote On/Off pin open, Unit on. Signal Low (Unit On) -0.3 V - 0.4 V Signal High (Unit Off) 2.5 V - 14 V Sequencing Voltage 0V - Vin - - 2 V/mS 10 mS - - - 100 mV 200 mV 200 mV 400 mV Sequencing Slew Rate Capability Sequencing Delay Time VRBA-06A2AL; Remote On/Off pin open, Unit on. Sequencing Voltage applied on SEQ pin should be higher than output voltage. Delay from Vin, min to application of voltage on SEQ pin Tracking Accuracy Power-Up Power-Down 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.5 Vdc/6 A Output 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.5 Vdc/6 A Output Efficiency Data MODULE 3.3V 100.0% 95.0% EFFICIENCY EFFICIENCY MODULE 5.0V 8.3 12.0 14.0 90.0% 85.0% 80.0% 75.0% 1A 2A 3A 4A 5A 6A 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 8.3V 12.0V 14.0V 1A 2A OUTPUT CURRENT 4A 6A 5A EFFICIENCY 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 8.3V 12.0V 14.0V 1A 6A 2A 3A 4A 5A 6A OUTPUT CURRENT OUTPUT CURRENT MODULE 0.75V 90.0% EFFICIENCY EFFICIENCY 8.3V 12.0V 14.0V 3A 5A MODULE 1.8V 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 2A 4A OUTPUT CURRENT MODULE 2.5V 1A 3A 80.0% 8.3V 12.0V 14.0V 70.0% 60.0% 50.0% 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.5 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=5.0 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.5 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=1.2 V Ripple and noise at full load, Vin=12 V, Vo=1.8 V Ripple and noise at full load, Vin=12 V, Vo=2.5 V Ripple and noise at full load, Vin=12 V, Vo=3.3 V Ripple and noise at full load, Vin=12 V, Vo=5.0 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.5 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=1.2 V 100% to 50% load step at Vin=12 V, Vo=1.2 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 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.5 Vdc/6 A Output Transient Response Waveforms (continued) 50% to 100% load step at Vin=12 V, Vo=2.5 V 100% to 50% load step at Vin=12 V, Vo=2.5 V 50% to 100% load step at Vin=12 V, Vo=3.3 V 100% to 50% load step at Vin=12 V, Vo=3.3 V 50% to 100% load step at Vin=12 V, Vo=5.0 V 100% to 50% load step at Vin=12 V, Vo=5.0 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.5 Vdc/6 A Output Mechanical Outline Pin Connections Pin Function 1 Vout+ 2 Trim 3 Ground 4 SEQ 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