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| NON-ISOLATED DC/DC CONVERTERS 2.4 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output VRBC-16F2Ax * * * * * * * Non-Isolated High Efficiency High Power Density OCP/SCP RoHS Compliant * * * * * * * Rev.A Under-voltage Lockout (UVLO) Over Temperature Protection Remote Sense Wide Input Wide Trim Converter can sink and source Current Active Low/High (Option) Fixed Frequency (300 kHz) Flexible Output Voltage Sequencing Remote On/Off Description The Bel VRBC-16F2Ax 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 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). These modules have a sequencing feature that enables designers to implement various types of output voltage sequencing when powering multiple voltages on a board. 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 0.75 V -3.63 V 1 Input Voltage 2.4 V -5.5 V Max. Output Current 16 A Max. Output Power 58.1 W Typical Efficiency 94% Model Number Active Low VRBC-16F2AL Model Number Active High VRBC-16F2A0 Notes: 1. These modules use a buck topology, so the output voltages must be 0.8 V less than the input voltage. 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. 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 Sequencing Voltage 1 Min -0.3 V -0.3 V -0.3 V -40 C -55 C Typ - Max 5.8 V 5.8 V Vin 85 C 125 C Notes Ambient Temperature Storage Temperature Notes: All specifications are typical at 25 C unless otherwise stated. 1. VRBC-16F2Ax 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 2.4 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output Min Vo1.5 V Vo=1.8-2.5 V Vo=3.3 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 Input Reflected Ripple Current (pk-pk) Input Reflected Ripple Current (rms) I t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold 2 Input Specifications Parameter Input Voltage 2.4 V 3.0 V 4.5 V 11.23 A 6.47 A 3.08 A 80 mA 10 mA 100 mA 40 mA 0.15 A s 2.2 V 2.0 V 2 Typ Max 5.5 V 5.5 V 5.5 V 12.89 A 13.55 A 6.67 A 22 mA 0.3 A s 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. Output Specifications Parameter Output Voltage Set Point Output Voltage Set Point Load Regulation Line Regulation Regulation Over Temperature (-40 C to +85 C) Output Current Current Limit Threshold Short Circuit Surge Transient Ripple and Noise (pk-pk) Ripple and Noise (rms) Turn on Time Overshoot at Turn on Output Capacitance ESR 1mohm ESR 10mohm Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time Min -2%Vo,set -3%Vo,set 0A 19 A 0 uF 0 uF Typ 0.4%Vo,set 0.3%Vo,set 0.5%Vo,set 1.6 A s 25 mV 8 mV 4 mS 0%Vo,set 300 mV 50 uS 300 mV 50 uS 150 mV 100 uS 150 mV 100 uS 2 Max 2%Vo,set 3%Vo,set 16 A 35 A 2A s 50 mV 15 mV 8 mS 3%Vo,set 1000 uF 5000 uF 2 Notes Vin=5 V, lo=lomax full load Over all operating input voltages, resistive loads and temperature conditions Io=Iomin to Iomax Vin=Vinmin to Vinmax Tref=Tamin to Tamax Tested with 0-20 MHz, 10 uF/16 V tantalum capacitor & 1 uF/10 V TDK ceramic capacitor at output VO=0.75 V 3.3 V di/dt=2.5 A/ uS; Vin=5 V; and with 10 uF/16 V tantalum capacitor & 1 uF/10 V ceramic capacitor at 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 output VO=0.75 V 3.3 V 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/16 A Output General Specifications Parameter 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 Dimensions Inches (L x W x H) Millimeters (L x W x H) Weight 2.0 x 0.5 x 0.363 50.80 x 12.7 x 9.23 8.3 g 91% 86% 75% 250 kHz 0.7525 V 94% 89% 78% 300 kHz 125 C 5,109,613 hours 350 kHz 3.63 V 5% Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) Measured at Vin=5 V, full load Min Typ Max Notes 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) Sequencing Voltage Sequencing Slew Rate Capability Sequencing Delay Time Tracking Accuracy Power-Up Power-Down 100 mV 200 mV 200 mV 400 mV Min -0.3 V 1.5 V -0.3 V 1.5 V 0.05 V 10 mS Typ Max 0.3 V 5.8 V 0.3 V 5.8 V Vin 2 V/mS Delay from Vinmin to application of voltage on SEQ pin Notes VRBC-16F2A0; Remote On/Off pin open, Unit on. VRBC-16F2AL; Remote On/Off pin open, Unit on. Sequencing Voltage should be higher than output voltage. Output Trim Equations Equation for calculating the trim resistor (in k) 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 GND Rtrim 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 x (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/16 A Output Efficiency Data 98.0% 96.0% 94.0% 92.0% 90.0% 88.0% 86.0% 4.5V 84.0% 5.0V 82.0% 5.5V 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% 3.0V 5.0V 5.5V 70.0% 1.6 4.0 8.0 12.0 16.0 75.0% Vo=1.8 V 95.0% 90.0% 85.0% 80.0% 75.0% 70.0% 65.0% 60.0% 1.6 2.4V 5.0V 5.5V 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 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A 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 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output Ripple and Noise Waveforms Ripple and noise at full load, 5.0 V input, 0.75 V output and Ta=25 degC Ripple and noise at full load, 5.0 V input, 1.8 V output and Ta=25 degC Ripple and noise at full load, 5.0 V input, 3.3 V output and Ta=25 degC Note: Ripple and noise is tested at 0-20 MHz BW, 10 uF/16 V tantalum capacitor and 1 uF/10 V 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 2.4 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/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= 1.8 V 100% to 50% load step at Vin=5 V, Vo= 1.8 V 50% to 100% load step at Vin=5 V, Vo= 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 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 2.4 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/16 A Output Mechanical Outline Pin Connections Pin 1 2 3 4 5 6 7 8 9 10 11 Function Vout Vout Vo,sense Vout Ground Ground Vin Vin SEQ Trim 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. (c)2007 Bel Fuse Inc. Specifications subject to change without notice. 011607 CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com FAR EAST 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 EUROPE 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 |
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