NON-ISOLATED DC/DC CONVERTERS 10 V-14 V Input 1.2 V-5.0 V/10 A Output SRBC-10Axx0 Series RoHS Compliant • Non-Isolated • Under-voltage Lockout (UVLO) • High Efficiency • Over Temperature Protection • High Power Density • OCP/SCP • Excellent Thermal Performance • Remote On/Off • Low Cost • Industrial Temperature Range • Remote Sense Description The Bel SRBC-10Axx0 modules are a series of non-isolated dc/dc converters that deliver up to 10 A of output current with full load efficiency of 93% at 3.3 V output. 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, and wide input. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number Active High 5.0 V 10 V – 14 V 10 A 50.0 W 95% SRBC-10A500 3.3 V 10 V – 14 V 10 A 33.0 W 93% SRBC-10A330 2.5 V 10 V – 14 V 10 A 25.0 W 92% SRBC-10A250 1.8 V 10 V – 14 V 10 A 18.0 W 90% SRBC-10A180 1.5 V 10 V – 14 V 10 A 15.0 W 89% SRBC-10A150 1.2 V 10 V – 14 V 10 A 12.0 W 87.5% SRBC-10A120 Note: Add “G” suffix at the end of the model number to indicate “Tray Packaging”. Absolute Maximum Ratings Parameter Min Typ Max Input Voltage (continuous) -0.3 V - 15 V Output Enable Terminal Voltage -0.3 V - 15 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 10 V-14 V Input 1.2 V-5.0 V/10 A Output Input Specifications Parameter Min Typ Max 10 V - 14 V Input Current (full load) - - 5.7 A Input Current (no load) - - 60 mA Remote Off Input Current - 3 mA 10 mA Input Reflected Ripple Current (pk-pk) - 100 mA - Input Reflected Ripple Current (rms) - 50 mA - - 2 0.05 A s 0.1 A s - 7.8 V 9.4 V - 6.7 V 8.0 V - 7.9 V 9.0 V Input Voltage 2 I t Inrush Current Transient Turn-on Voltage Threshold 1.2 V - 3.3 V 5.0 V Turn-off Voltage Threshold 1.2 V - 3.3 V 5.0 V Notes An input line fuse must always be used. Tested with one 1000 uF/25 V Electrolytic capacitor and four 47 uF tan capacitors and one 1 uH inductor at the input. 2 Note: All specifications are typical at 25 °C unless otherwise stated. Output Specifications Parameter Min Typ Max -2% Vo,set - 2% Vo,set Load Regulation - 10 mV - Line Regulation - 10 mV - Regulation Over Temperature (-40 °C to +85 °C) - 15 mV - 0A - 10 A Current Limit Threshold - 200% Io - Short Circuit Surge Transient - 0.5 A s 1A s Ripple and Noise (pk-pk) - 50 mV 100 mV Ripple and Noise (rms) - 20 mV 40 mV Turn on Time - 7 mS 10 mS Overshoot at Turn on - - 1% Vo,set Output Capacitance - - 5000 uF - 200 mV - - 25 uS - - 200 mV - - 25 uS - Output Voltage Set Point Output Current 2 Notes Vin=12 V, full load Tref=Ta, min to Ta, max 2 Tested with 0-20 MHz Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time VO = 1.2 V -5.0 V di/dt=2.5 A/uS, Vin=12 V 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 10 V-14 V Input 1.2 V-5.0 V/10 A Output General Specifications Parameter Min Typ Max Notes - 95% 93% 92% 90% 89% 87.5% - 265 kHz 300 kHz 335 kHz - 130 °C - 90% Vo - - 110% Vo 110% Vo Efficiency Vo=5.0 V Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Switching Frequency Over Temperature Shutdown 1 Output Voltage Trim Range 1.5 V~5.0 V 1.2 V MTBF Measured at Vin=12 V, full load Calculated Per Bell Core SR-332 (IO = 80% Io, max; Vo=5.0 V; Vin=12 V; Ta = 25 °C) 4,982,651 hours 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 - 7.8 g - Notes: All specifications are typical at 25 °C unless otherwise stated. 1. The Tref temperature measurement location: Control Specifications Parameter Min Typ Max Signal Low (Unit Off) -0.3 V - 0.3 V Signal High (Unit On) 1V - 14 V Notes Remote On/Off Remote On/Off pin open, Unit on. 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 10 V-14 V Input 1.2 V-5.0 V/10 A Output Output Trim Equations Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of the resistors should be used for any given application. Rtrimdown = A −B Vnom − Vadj Vout Rtrimdown Module Trim GND Rtrimup = Vadj Vout C −D − Vnom Module Trim Rtrimup GND Vnom A B C D 5.0 64.6353 16.01 10.507 1 3.3 39.1049 16.01 10.507 1 2.5 27.0561 16.01 10.507 1 1.8 16.5749 16.01 10.507 1 1.5 12.0693 16.01 10.507 1 1.2 - - 10.507 1 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 10 V-14 V Input 1.2 V-5.0 V/10 A Output Efficiency Data Module 3.3V 12.0V 14.0V 1A 2.5A 5A 7.5A Output Current Efficiency 10V 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% Efficiency 8.3V 12.0V 14.0V 12.0V 14.0V 12.0V 14.0V 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% Efficiency Efficiency 10V Module 1.2V 10V 2.5A 5A 7.5A 10A Output Current 2.5A 5A 7.5A 10A Output Current 1A 2.5A 5A 7.5A 10A Output Current Module 1.5V 1A 14.0V 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% 1A 2.5A 5A 7.5A 10A Output Current 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% 12.0V Module 1.8V Module 2.5V 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% 10V 1A 10A Efficiency Efficiency Module 5.0V 100.0% 90.0% 80.0% 70.0% 60.0% 50.0% 10V 12.0V 14.0V 1A 2.5A 5A 7.5A 10A Output Current Thermal Derating Curve 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 10 V-14 V Input 1.2 V-5.0 V/10 A Output Mechanical Outline Pin Connections Pin Function 1 Remote On/Off 2 Vin 3 Ground 4 Vout 5 Trim 6 Remote Sense RECOMMENDED PAD LAYOUT BOTTOM VIEW 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. 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