NON-ISOLATED DC/DC CONVERTERS 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16A Output VRBC-16F1Ax Series RoHS Compliant • Non-Isolated • Under-voltage Lockout (UVLO) • High Efficiency • Over Temperature Protection • High Power Density • Remote Sense • OCP/SCP • Wide Input • Fixed Frequency (300 kHz) • Wide Trim Range • Converter can sink and source current • Remote On/Off • Active Low/High (option) Description The Bel VRBC-16F1Ax modules are a series of non-isolated dc/dc converters that can deliver up to 16 A of output current with full load efficiency of 94% at 3.3 V output. These modules provide precisely regulated voltage programmable via external resistor from 0.75 V to 3.63 V over a wide range of input voltage (2.4 V 5.5 V). 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-3.63 V Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number Active Low Model Number Active High Model Number Active Low 2.4 V-5.5 V 16 A 58.1 W 94% VRBC-16F1AL VRBC-16F1A0 VRBC-16F1AW 2 Notes: 1. These modules use a buck topology, so the output voltages must be 0.8 V less than the input voltage. 2. “W” indicates special coating. 3. Add “G” to the end of the Model Number to indicate Tray Packaging. Absolute Maximum Ratings Parameter Input Voltage (continuous) Min -0.3 V Typ - Max 5.8 V Notes Output Enable Terminal Voltage -0.3 V - 5.8 V Ambient Temperature -40 °C - 85 °C Storage Temperature -55 °C - 125 °C Notes: All specifications are typical at 25 °C unless otherwise stated. Input Specifications Parameter Input Voltage Min Typ Max 2.4 V - 5.5 V - 11.23 A 6.47 A 3.08 A 80 mA 10 mA 12.89 A 13.55 A 6.67 A 22 mA Notes Vo, set ≤ Vin-0.8 V Input Current (full load) Vo=3.3 V Vo=1.8 V Vo=0.75 V 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 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16A Output Input Specifications (continued) Parameter Min Typ Max Input Reflected Ripple Current (pk-pk) - 100 mA - Input Reflected Ripple Current (rms) - 40 mA - I t Inrush Current Transient - 0.15 A s 0.3 A s Turn-on Voltage Threshold - 2.2 V - Turn-off Voltage Threshold - 2.0 V - 2 2 Notes Tested with two 100 uF / 10 V tantalum input capacitors (P/N: TPSC107K010R0075 AVX) & simulated source impedance of 1 uH, 5 Hz to 20 MHz. 2 Output Specifications Parameter Output Voltage Set Point Min -2% Vo,set Typ - Max 2% Vo,set Output Voltage Set Point -3% Vo,set - 3% Vo,set Load Regulation - 0.4% Vo,set - Notes Vin=5 V, lo=lomax 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 - 16 A Current Limit Threshold Short Circuit Surge Transient 19 A - - 1.6 A s 2A s Ripple and Noise (pk-pk) - 25 mV 50 mV Ripple and Noise (rms) - 8 mV 15 mV Turn on Time - 4 mS 8 mS Overshoot at Turn on Output Capacitance - 0% Vo,set 3% Vo,set 0 uF 0 uF - 1000 uF 5000 uF - 300 mV - - 50 uS - - 300 mV - - 50 uS - ESR ≥ 1 mohm ESR ≥ 10 mohm 35 A 2 2 Tested with 0-20 MHz, 10 uF / 16 V tantalum capacitor & 1 uF / 10 V TDK ceramic capacitor at the output Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load VO=0.75 V 3.3 V Settling Time di/dt=2.5 A/uS; Vin=5 V; and with 10 uF / 16 V tantalum capacitor & 1 uF / 10 V ceramic capacitor at the output Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO=0.75 V 3.3 V - 150 mV - - 100 uS - - 150 mV - - 100 uS - di/dt=2.5 A/uS; Vin=5 V; and with two 150 uF / 10 V tantalum capacitors & 1 uF / 10 V ceramic capacitor at the output Note: All specifications are typical at nominal input (Vin = 5 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 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16A Output General Specifications Parameter Min Typ Max 91% 86% 75% 94% 89% 78% - Switching Frequency Over Temperature Shutdown 250 KHz - 300 KHz 125°C 350 KHz - Output Trim Range (Wide Trim) 0.7525 V - 3.63 V - - 5% Notes Efficiency Vo=3.3 V Vo=1.8 V Vo=0.75 V Remote Sense Compensation MTBF 5,500,000 hours Measured at Vin=5 V, full load Total adjustment of trim, setpoint and remote sense combined should not exceed 3.63 V. Vo=0.7525 V when trim pin open Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight - 2.0 x 0.5 x 0.363 50.80 x 12.7 x 9.23 8.3 g - 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 Typ Max -0.3 V 1.5 V -0.3 V 1.5 V - 0.3 V 5.8 V 0.3 V 5.8 V Notes VRBC-16F1A0; Remote On/Off pin open, Unit on. VRBC-16F1AL & VRBC-16F1AW; 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 = 21.07 − 5.11 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. Vtrim = 0.7 − 0.1698 × (Vadj − 0.7525) Vout 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 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16A Output Efficiency Data 98.0% 96.0% 94.0% 92.0% 90.0% 88.0% 86.0% 4.5V 5.0V 5.5V 84.0% 82.0% 80.0% 1.6 4.0 8.0 12.0 16.0 Vo=3.3 V 100.0% 95.0% 90.0% 85.0% 80.0% 2.4V 5.0V 5.5V 75.0% 70.0% 1.6 4.0 8.0 12.0 16.0 Vo=1.8 V 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 2.4V 5.0V 5.5V 65.0% 60.0% 1.6 4.0 8.0 12.0 16.0 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 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16A Output Thermal Derating Curves Vo=3.3 V Vo=1.8 V Vo=0.7525 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 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16A Output Mechanical Outline Pin Connections Pin Function 1 Vout 2 Vout 3 Vo,sense 4 Vout 5 Ground 6 Ground 7 Vin 8 Vin 9 N/A 10 Trim 11 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. ©2006 Bel Fuse Inc. Specifications subject to change without notice. 011906 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