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| NON-ISOLATED DC/DC CONVERTERS 2.4 Vdc - 5.5 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output SRBC-10F2AX * * * * * * * Non-Isolated High Efficiency High Power Density RoHS Compliant * * * * * * * Rev.A Under-Voltage Lockout (UVLO) Over Temperature Protection Wide Input Range Wide Trim Range Remote On/Off Converter Can Sink and Source Current Active Low/High (Option) Fixed Frequency(300 kHz) OCP/SCP Flexible Output Voltage Sequencing Remote Sense Description The Bel SRBC-10F2AX modules are a series of non-isolated dc/dc converters that deliver up to 10 A of output current with full load efficiency of 95% 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. 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 2.4 V - 5.5 V Max. Output Current 10 A Max. Output Power 36.3 W Typical Efficiency 95% Model Number Active Low SRBC-10F2AL Model Number Active High SRBC-10F2A0 Notes: 1. These modules use a buck topology, so the output voltages must be 0.5 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. SRBC-10F2AX 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/10 A Output Input Specifications Parameter Input Voltage 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 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 Min 2.4 V - Typ 7.0 A 5.5 A 4.0 A 3.5 A 3.0 A 2.0 A 80 mA 15 mA 140 mA 40 mA 2.2 V 2.0 V Max 5.5 V 8.0 A 9.5 A 9.0 A 7.5 A 6.0 A 4.0 A 0.2 A s 2 Notes Vo, set Vin-0.5 V Tested with two 100 uF/10 V tantalum input capacitors & simulated source impedance of 1uH, 5 Hz to 20 MHz. Note: All specifications are typical at 25 C unless otherwise stated. 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 1m ohm ESR 10m ohm Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO=3.3 V 130 mV 50 uS 150 mV 50 uS di/dt=2.5 A/uS; Vin=5 V; and with two 150 uF/16 V tantalum capacitors & 1 uF/10 V ceramic capacitor at the output Min -2% Vo,set -3% Vo,set 0A 15 A 0 uF 0 uF Typ 0.4% Vo,set 0.3% Vo,set 0.5% Vo,set 25 mV 8 mV 4 mS 0% Vo,set Max 2% Vo,set 3% Vo,set 10 A 27 A 1.5 A s 50 mV 15 mV 8 mS 3% Vo,set 1000 uF 4700 uF Tested with 0-20 MHz, 10 uF/ 16 V tantalum capacitor & 1 uF/10 V TDK ceramic capacitor at the output 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 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 Output Specifications (continued) Parameter Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO=0.75 V VO=1.2 V VO=1.5 V VO=1.8 V VO=2.5 V 130 mV 50 uS 130 mV 50 uS 120 mV 50 uS 120 mV 50 uS 120 mV 50 uS 120 mV 50 uS 130 mV 50 uS 130 mV 50 uS 120 mV 50 uS 140 mV 50 uS di/dt=2.5 A/uS; Vin=5 V; and with two 150 uF/16 V tantalum capacitors & 1uF/10 V ceramic capacitor at the output Min Typ Max Notes Note: All specifications are typical at nominal input (Vin=5 V), full load at 25 C unless otherwise stated. General Specifications Parameter Efficiency Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 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 1.30 x 0.53 x 0.315 33.02 x 13.46 x 8.00 6.6 g 92% 90% 88% 87% 85% 79% 250 kHz 0.7525 V 95% 93% 91% 90% 88% 82% 300 kHz 125 C 10% 6,643,156 hours 350 kHz 3.63 V Measured at Vin=5 V, full load Min Typ Max Notes Calculated Per Bell Core SR-332 (IO = Nominal; Ta = 25 C) - 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 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 Vin, min to application of voltage on SEQ pin Notes SRBC-10F2A0; Remote On/Off pin open, Unit on. SRBC-10F2AL; 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) Module Vout 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 3.3V Vout 97.0% 95.0% Efficiency 2.5V Vout 95.0% Efficiency 90.0% 85.0% 80.0% 75.0% 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 93.0% 91.0% 89.0% 87.0% 85.0% 4.5V 5.0V 5.5V 3.0V 3.3V 5.0V 5.5V 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Output Current (A) Output Current (A) Vo=3.3 V 1.8V Vout Vo=2.5 V 1.5V Vout 95.0% 95.0% 90.0% Efficiency Efficiency 90.0% 85.0% 80.0% 75.0% 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Output Current (A) 85.0% 80.0% 75.0% 70.0% 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Output Current (A) 3.0V 3.3V 5.0V 5.5V 3.0V 3.3V 5.0V 5.5V Vo=1.8 V 1.2V Vout 95.0% 90.0% 85.0% Efficiency 80.0% 75.0% 70.0% 65.0% 60.0% 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 Output Current (A) Efficiency 90.0% 85.0% 80.0% Vo=1.5 V 0.75V Vout 3.0V 3.3V 5.0V 5.5V 75.0% 70.0% 65.0% 60.0% 55.0% 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 3.0V 3.3V 5.0V 5.5V 10.0 Output Current (A) Vo=1.2 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/10 A Output Thermal Derating Curves Vin=5.0 V, Vo=0.75 V Vin=5.0 V, Vo=1.5 V Vin=5.0 V, Vo=2.5 V Vin=5.0 V, Vo=3.3 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 (continued) Vin=3.3 V, Vo=0.75 V Vin=3.3 V, Vo=1.5 V Vin=3.3 V, Vo=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 Ripple and noise at full load, 0.75 V output Ripple and noise at full load, 1.2 V output Ripple and noise at full load, 1.5 V output Ripple and noise at full load, 1.8 V output Ripple and noise at full load, 2.5 V output Ripple and noise at full load, 3.3 V output Note: Ripple and noise at 5.0 V input, 0-20MHz BW, 10 uF/16 V tantalum cap 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 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 V output 100% to 50% load step at 0.75 V output 50% to 100% load step at 1.2 V output 100% to 50% load step at 1.2 V output 50% to 100% load step at 1.5 V output 100% to 50% load step at 1.5 V 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/10 A Output Transient Response Waveforms (continued) 50% to 100% load step at 1.8 V output 100% to 50% load step at 1.8 V output 50% to 100% load step at 2.5 V output 100% to 50% load step at 2.5 V output 50% to 100% load step at 3.3 V output 100% to 50% load step at 3.3 V output Note: Transient response at 5.0 V input, di/dt=2.5 A/uS, with two 150 uF/16 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/10 A Output Mechanical Outline Pin Connections Pin 1 2 Function Remote On/Off Vin SEQ Ground Vout Trim Remote Sense BOTTOM VIEW RECOMMENDED PAD LAYOUT 3 4 5 6 7 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. (c)2007 Bel Fuse Inc. Specifications subject to change without notice. 011707 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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