NON-ISOLATED DC/DC CONVERTERS 2.4 Vdc - 5.5 Vdc Input VRBC-10F1Ax 0.75 Vdc - 3.63 Vdc/10 A Output RoHS Compliant Rev.A • Non-Isolated • Under-Voltage Lockout (UVLO) • High Efficiency • Wide Input Range • High Power Density • Wide Trim Range • Fixed Frequency (300 kHz) • Remote On/Off • OCP/SCP • Remote Sense • Over Temperature Protection • • Active Low/High (option) Converter Can Sink and Source Current Description The Bel VRBC-10F1Ax modules are a series of non-isolated dc/dc converters that deliver up to 10 A of output current with full load efficiency of 94% at 3.3 Vdc output. These modules provide precisely regulated voltage programmable via external resistor from 0.75 Vdc to 3.63 Vdc over a wide range of input voltage (2.4 Vdc - 5.5 Vdc). The open-frame construction and small footprint enable designers to develop cost and space-efficient solutions. Standard features include remote On/Off, remote sense, over current protection, short current protection, wide input, and programmable output voltage. Part Selection Output Voltage 0.75 V - 3.63 V 1 Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number Active Low Model Number Active High 2.4 V - 5.5 V 10 A 36.3 W 94% VRBC-10F1AL VRBC-10F1A0 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 Min Typ Max Input Voltage (continuous) -0.3 V - 5.8 V Output Enable Terminal Voltage -0.3 V - 5.8 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. 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 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Input Specifications Parameter Input Voltage Input Current (full load) Min 2.4 V Typ - Max 5.5 V Input Current (no load) Remote Off Input Current - 7.0 A 4.04 A 1.89 A 80 mA 15 mA 8.06A 6.98A 4.06A 22 mA Input Reflected Ripple Current (pk-pk) - 120 mA - Input Reflected Ripple Current (rms) - 35 mA - I t Inrush Current Transient - - 0.2 A s Turn-on Voltage Threshold Turn-off Voltage Threshold - 2.2 V 2.0 V - Vo=3.3 V Vo=1.8 V Vo=0.75 V 2 Notes Vo, set ≤ Vin-0.5 V 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 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%Vo,set - 3%Vo,set - 0.4%Vo,set 0.3%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 Vin=Vin, min to Vin, max Tref=Ta, min to Ta, max Load Regulation Line Regulation Regulation Over Temperature (-40 °C to +85 °C) Output Current Current Limit Threshold - 0.5%Vo,set - 0A 15 A - 10 A 30 A Short Circuit Surge Transient - - 2A s Ripple and Noise (pk-pk) - 25 mV 50 mV Ripple and Noise (rms) - 8 mV 15 mV Turn on Time Overshoot at Turn on Output Capacitance - 4 mS 0%Vo,set 8 mS 3%Vo,set 0 uF 0 uF - 1000 uF 4700 uF ESR ≥ 1 mohm ESR ≥ 10 mohm Transient Response 50% ~ 100% Max Load Settling Time All 100% ~ 50% Max Load Settling Time 50% ~ 100% Max Load Settling Time All 100% ~ 50% Max Load Settling Time - 200 mV 25 uS 200 mV 25 uS 120 mV 50 uS 120 mV 50 uS 2 - Tested with 0-20 MHz, BW 10 uF/16 V tantalum capacitor & 1 uF/10 V TDK ceramic capacitor at the output 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 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 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output General Specifications Parameter Min Typ Max Notes 91% 86% 77% 250 kHz 0.7525 V - 94% 89% 80 % 300 kHz 125 °C - 350 kHz 3.63 V 10% Efficiency Vo=3.3 V Vo=1.8 V Vo=0.75 V Switching Frequency Over Temperature Shutdown Output Trim Range (Wide Trim) Remote Sense Compensation MTBF Measured at Vin=5 V, full load (current source) Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 °C) 6,900,000 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight - 2.0 x 0.5 x 0.363 50.8 x 12.7 x 9.23 8.3 g - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Signal Low (Unit Off) Signal High (Unit On) Signal Low (Unit On) Signal High (Unit Off) Min -0.3 V 1.5 V -0.3 V 1.5 V Typ - Max 0.3 V 5.8 V 0.3 V 5.8 V Notes VRBC-10F1A0; Remote On/Off pin open, Unit on. VRBC-10F1AL; 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. Rtrim = 21.07 − 5.11 Vadj − 0.7525 Vout 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. Vrim = 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 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Efficiency Data 98.0% 96.0% 94.0% 92.0% 90.0% 4.5V 5.0V 5.5V 88.0% 86.0% 84.0% 82.0% 80.0% 1.0 2.5 5.0 7.5 10.0 Vo=3.3 V 100.0% 95.0% 90.0% 85.0% 3.0V 5.0V 5.5V 80.0% 75.0% 70.0% 1.0 2.5 5.0 7.5 10.0 Vo=1.8 V 95.0% 90.0% 85.0% 80.0% 75.0% 2.4V 5.0V 5.5V 70.0% 65.0% 60.0% 1 3 5 8 10 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 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Thermal Derating Curves Vin= 5.0 V , Vo= 3.3 V Vin= 5.0 V , Vo= 0.75 V Vin= 5.0 V , Vo= 1.8 V Vin= 3.3 V , Vo= 0.75 V / 1.8 V / 2.5 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 2.4 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Ripple and Noise Waveforms 5.0 V input, 0.75 V output 5.0 V input, 1.8 V output 5.0 V input, 3.3 V output Note: Ripple and noise at full load, 0-20 MHz BW, 10 uF/16 V tantalum capacitor and 1uF/10 V ceramic capacitor 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 2.4 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Transient Response Waveforms 50% to 100% load step at 0.75 Vdc output 100% to 50% load step at 0.75 Vdc output 50% to 100% load step at 1.8 Vdc output 100% to 50% load step at 1.8 Vdc output 50% to 100% load step at 3.3 Vdc output 100% to 50% load step at 3.3 Vdc output Note: Transient response at 5 Vdc input, di/dt=2.5 A/uS, with 10 uF/16 V tantalum cap and 1uF/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 2.4 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Mechanical Outline Pin Connections Pin Function 1 Vout 2 Vout 3 Remote Sense 4 Vout 5 Ground 6 Ground 7 Vin 8 Vin 9 N/A 10 Trim 11 Remote On/Off HOLE SIZE: Ø0.043±0.003 [1.08±0.08] PAD SIZE: W 0.063±0.002 [1.63±0.05] L 0.10±0.004 [2.54±0.10] BOTH SIDE 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. 011807 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