NON-ISOLATED DC/DC CONVERTERS 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16 A Output SRBC-16F1Ax Series RoHS Compliant • Non-Isolated • Under-voltage Lockout (UVLO) • High Efficiency • Over Temperature Protection • High Power Density • OCP/SCP • Fixed Frequency (300 kHz) • Wide Input • Remote On/Off • Wide Trim Range • Converter Can Sink and Source • Remote Sense Current • Active High/Low (option) Description The Bel SRBC-16F1Ax modules are a series of non-isolated dc/dc converters that 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 (Vin=2.4-5.5V). 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 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 Model Number Active Low 2.4 V-5.5 V 16 A 58 W 94% SRBC-16F1AL SRBC-16F1A0 SRBC-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) Output Enable Terminal Voltage Ambient Temperature Storage Temperature Min -0.3 V -0.3 V -40 °C -55 °C Typ - Max 5.8 V 5.8 V 85 °C 125 °C Notes Note: All specifications are typical at 25 °C unless otherwise stated. Input Specifications Parameter Min Typ Max 2.4 V 3.0 V 4.5 V - 5.5 V 5.5 V 5.5 V - 11.23 A 8.70 A 6.40 A 5.45 A 4.52 A 3.05 A 15.10 A 14.81 A 13.64 A 11.76 A 9.64 A 6.69 A Notes Input Voltage Vo≤1.5 V Vo=1.8 - 2.5 V Vo=3.3 V Input Current (full load) Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 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 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16 A Output Input Specifications (continued) Parameter Input Current (no load) Min - Typ 80 mA Max - Remote Off Input Current - 10 mA 22 mA 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 With simulated source impedance of 1 uH, 5 Hz to 20 MHz and two 100 uF /10 V external input Tantalum capacitors at the input. 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 Notes Vin=5 V, lo=lo max Output Voltage Set Point -3% Vo,set - 3% Vo,set Over all operating input voltage, resistive load, and temperature conditions Load Regulation - 0.4% Vo,set - lo=lo min to lo 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 - 0A - 16 A Current Limit Threshold 19 A - Short Circuit Surge Transient - 1.6 A s 2A s 35 A Ripple and Noise (pk-pk) - 25 mV 50 mV 2 2 Ripple and Noise (rms) - 8 mV 15 mV Turn on Time - 4 mS 8 mS Overshoot at Turn on Output Capacitance ESR ≥1 mohm ESR ≥10 mohm Transient Response - 0% 3% 0 uF 0 uF - 1000 uF 5000 uF 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Vo=0.75-3.3 V Settling Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time Vo=0.75-3.3 V - 300 mV - - 50 uS - - 300 mV - - 50 uS - - 150 mV - - 100 uS - - 150 mV - - 100 uS - Tested with 0-20 MHz, with external 10 uF/16 V tantalum capacitor &1 uF /10 V TDK ceramic capacitor di/dt=2.5 A/uS; Vin=5 V; and with external 10 uF / 16 V Tantalum capacitors and 1 uF/10 V ceramic capacitor at the output di/dt=2.5 A/uS; Vin=5 V; and with external 2 x 150 uF / 10 V Tantalum capacitors and 1 uF/10 V ceramic capacitor at the output Note: All specifications are typical at nominal input, 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/16 A Output General Specifications Parameter Min Typ Max Notes 92% 90% 88% 85% 82% 76% 94% 92% 90% 88% 85% 79% - Switching Frequency Over Temperature Shutdown 250 kHz - 300 kHz 125 °C 350 kHz - Output Voltage Trim Range 0.7525 V - 3.63 V - - 5% Efficiency Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Vo=0.7525 V Remote Sense Compensation MTBF 5,438,000 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 = 80% Io, max; Vo=1.8 V; Vin=5.0 V; Ta = 25 °C) Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 1.3 x 0.53 x 0.315 33.02 x 13.46 x 8.00 - 6.6 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 Notes -0.3 V 1.5 V -0.3 V 1.5 V - 0.3 V 5.8 V 0.3 V 5.8 V SRBC-16F1A0; Remote On/Off pin open, Unit on. SRBC-16F1AL & SRBC-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. Vout Vtrim = 0.7 − 0.1698 × (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 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16 A Output Efficiency Data 100.0% 100.0% 95.0% 95.0% 4.5V 5V 5.5V 90.0% 85.0% 3.0V 3.3V 5V 5.5V 90.0% 85.0% 80.0% 75.0% 80.0% 70.0% 1 2 3 4 5 6 7 8 9 10111213141516 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Vo=2.5 V Vo=3.3 V 95.0% 95.0% 90.0% 90.0% 3V 3.3 5V 5.5V 85.0% 80.0% 75.0% 70.0% 3V 3.3V 5V 5.5V 85.0% 80.0% 75.0% 70.0% 65.0% 65.0% 60.0% 60.0% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Vo=1.8 V 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 55.0% 50.0% Vo=1.5 V 85.0% 3V 3.3V 5V 5.5 3V 3.3V 5V 5.5V 75.0% 65.0% 55.0% 45.0% 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Vo=1.2 V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 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/16 A Output Thermal Derating Curves Vin=5.0 V, Vo=3.3 V or 2.5 V Vin=5.0 V, Vo=0.7525 V or 1.2 V Vin=5.0 V, Vo=1.8 V or 1.5 V Vin=3.3 V, Vo=1.8 V or 1.5 V Vin=3.3 V, Vo=0.7525 V or 1.2 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/16 A Output Ripple and Noise Waveforms Vin=5.0 V, Vo=0.75 V Vin=5.0 V, Vo=1.2 V Vin=5.0 V, Vo=1.5 V Vin=5.0 V, Vo=1.8 V Vin=5.0 V, Vo=2.5 V Vin=5.0 V, Vo=3.3 V Note: Ripple and noise is tested at 0-20 MHz BW, 10 uF/16 V tantalum capacitor and 1 uF/10 V ceramic capacitor, full load, 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 V - 5.5 V Input 0.75 V - 3.63 V/16 A Output Transient Response Waveforms 50% to 100% load step at Vin=5 V, Vo=0.75 V 100% to 50% load step at Vin=5 V, Vo=0.75 V 50% to 100% load step at Vin=5 V, Vo=1.2 V 100% to 50% load step at Vin=5 V, Vo=1.2 V 50% to 100% load step at Vin=5 V, Vo=1.5 V 100% to 50% load step at Vin=5 V, Vo=1.5 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 V - 5.5 V Input 0.75 V - 3.63 V/16 A Output Transient Response Waveforms (continued) 50% to 100% load step at Vin=5 V, Vo=1.8 V 100% to 50% load step at Vin=5 V, Vo=1.8 V 50% to 100% load step at Vin=5 V, Vo=2.5 V 100% to 50% load step at Vin=5 V, Vo=2.5 V 50% to 100% load step at Vin=5 V, Vo=3.3 V 100% to 50% load step at Vin=5 V, Vo=3.3 V Note: Transient response is tested at di/dt=2.5 A/uS, with two 150 uF/10 V tantalum capacitors and 1uF/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 2.4 V - 5.5 V Input 0.75 V - 3.63 V/16 A Output Mechanical Outline Pin Connections Pin Function 1 Remote On/Off 2 Vin 3 N/A 4 Ground 5 Vout 6 Trim 7 Remote Sense PAD SIZE: MIN: 0.14"* 0.095" (3.56mm * 2.41mm) MAX: 0.165"* 0.11" (4.19mm * 2.79mm) 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. 032006 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