NON-ISOLATED DC/DC CONVERTERS 4.5 Vdc - 14 Vdc Input SRBC-10E2Ax 0.75 Vdc - 3.63 Vdc/10 A Output RoHS Compliant Rev.A • Non-Isolated • Under-voltage Lockout (UVLO) • High Efficiency • Over Temperature Shutdown • Fixed Frequency • OCP/SCP • Low Cost • Wide Trim • Wide Input • Remote Sense • Flexible Output Voltage Sequencing • Remote On/Off • Active Low/High (option) • Industrial Temperature Range Description The Bel SRBC-10E2Ax is part of the non-isolated dc/dc converter series. The modules use a SMT package. These converters are available in a range of output voltages from 0.75 Vdc to 3.63 Vdc over a wide range of input voltage (Vin = 4.5 Vdc - 14 Vdc). The Bel SRBC-10E2Ax has a sequencing feature that enables designers to implement various types of output voltage sequencing when powering. The efficiency is typically 93% at 3.3 Vdc output at 12 Vdc input at full load. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number Active Low Model Number Active High 0.75 V - 3.63 V 4.5 V - 14 V 10 A 36.3 W 93% SRBC-10E2AL SRBC-10E2A0 Notes: 1. Add “G” suffix at the end of the model number to indicate Tray Packaging. 2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers. Absolute Maximum Ratings Min Typ Max Input Voltage (continuous) Parameter -0.3 V - 15 V Output Enable Terminal Voltage -0.3 V - 15 V 1 -0.3 V - Vin Ambient Temperature -40 °C - 85 °C Storage Temperature -55 °C - 125 °C Sequencing Voltage Notes Notes: All specifications are typical at 25 °C unless otherwise stated. 1. SRBC-10E2Ax 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 not using the sequencing feature, either, tie the SEQ pin to Vin or leave it unconnected. 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Input Specifications Parameter Min Typ Max Notes 4.5 V Vo,set +1.5 V - 14 V 14 V Input Current (full load) - - 8.6 A Input Current (no load) - 40 mA - Remote Off Input Current - 2 mA - Input Reflected Ripple Current (pk-pk) - - 400 mA Input Reflected Ripple Current (rms) - - 150 mA I t Inrush Current Transient - 0.04 A s Turn-on Voltage Threshold - 4.3 V Turn-off Voltage Threshold - 4.0 V Input Voltage Vo,set <3.0 V Vo,set≥3.0 V 2 2 An input line fuse must always be used. Tested with one 1000 uF/25 V AL input capacitor with ESR=0.03 ohm max and 4 × 47 uF/16 V tan capacitors with ESR=0.013 ohm max at 100 kHz, & simulated source impedance of 1000 nH, 5 Hz to 20 MHz. 2 0.08 A s 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 Load Regulation - 0.1% Vo,set - Line Regulation Regulation Over Temperature (-40 °C to +85 °C) Output Current - 0.1% Vo,set - - 0.3 Vo,set - 0A - 10 A - 200% Io,out - - 1A s 3A s Ripple and Noise (pk-pk) - 30 mV 75 mV Ripple and Noise (rms) - 12 mV 35 mV Turn on Time - 8 mS 20 mS Current Limit Threshold Short Circuit Surge Transient Overshoot at Turn on Output Capacitance 2 Notes Vin=12 V, full load Tref=Ta, min to Ta, max 2 - - 1% 0 uF - 5600 uF Tested with 0-20 MHz, with 10 uF tantalum capacitor & 1 uF ceramic capacitor at the output Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time All output - 160 mV - - 50 uS - - 160 mV - - 50 uS - di/dt=2.5 A/uS; Vin=5 V & 12 V; and with 470 uF tantalum 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output General Specifications Parameter Min Typ Max Notes Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Vo=0.75 V - 92% 91% 89% 88% 86% 80% - Vo=3.3 V Vo=2.5 V Vo=1.8 V Vo=1.5 V Vo=1.2 V Vo=0.75 V - 93% 92% 90% 89% 87.5% 81% - 265 kHz 300 kHz 335 kHz - 130 °C - 0.7525 V - 3.63 V - - 0.5 V Efficiency Measured at Vin=5 V, full load Efficiency Switching Frequency Over Temperature Shutdown 1 Output Voltage Trim Range Remote Sense Compensation MTBF Measured at Vin=12 V, full load Calculated Per Bell Core SR-332 (IO =80% Io,max; Vo=3.3 V; Vin=12 V; Ta = 30 °C) 4,982,651 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) 1.3 x 0.53 x 0.315 33.02 x 13.46 x 8.00 Weight - 8g - Note: All specifications are typical at 25 °C unless otherwise stated. Control Specifications Parameter Min Typ Max Notes Signal Low (Unit Off) -0.2 V - 0.3 V Signal High (Unit On) - - Vin, max SRBC-10E2A0; Remote On/Off pin open, Unit on. Signal Low (Unit On) -0.2 V - 0.3 V Signal High (Unit Off) 2.5 V - Vin, max 25 mS - - - - 2 V/mS - 100 mV 300 mV 200 mV 500 mV Remote On/Off SRBC-10E2AL; Remote On/Off pin open, Unit on. Voltage Sequencing Sequencing Delay Time Sequencing Slew Rate Capability Tracking Accuracy Power-Up Power-Down Delay from Vin, min to application of voltage on SEQ pin Vin, min to Vin, max; Io, min to Io, max; Vseq<Vo 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Output Trim Equations Equation for calculating the trim resistor (in Ω) given the desired output voltage (Vo) is shown below. The Trim Up resistor should be connected between the Trim pin and Ground. Vout Sense R trimup 10500 = − 1000 Vo − 0.7525 Module trim Rtrim GND Equation for calculating the trim voltage (in V) given the desired output voltage (Vo) is shown below. The Trim Up voltage should be connected between the Trim pin and Ground. Vout Vtrimup = 0.7 − 0.0667 × (Vo − 0.7525) Sense 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Efficiency Data Module 2.5V 100.0% 100.0% 95.0% 95.0% 90.0% 5.0V 85.0% 12.0V Efficiency Efficiency Module 3.3V 90.0% 5.0V 85.0% 12.0V 80.0% 80.0% 1A 2.5A 5A 7.5A 1A 10A 2.5A Output Current 7.5A 10A Module 1.5V 95.0% 95.0% 90.0% 90.0% 85.0% 85.0% 5.0V 80.0% 12.0V 75.0% Efficiency Efficiency Module 1.8V 5.0V 80.0% 75.0% 12.0V 70.0% 70.0% 1A 2.5A 5A 7.5A 1A 10A 2.5A 5A 7.5A 10A Output Current Output Current Module 1.2V Module 0.75V 100.0% 80.0% 5.0V 70.0% 12.0V 60.0% Efficiency 90.0% Efficiency 5A Output Current 90.0% 80.0% 5.0V 70.0% 12.0V 60.0% 50.0% 50.0% 1A 2.5A 5A Output Current 7.5A 10A 1A 2.5A 5A 7.5A 10A Output Current 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Thermal Derating Curves Vo=0.75 V Vo=1.8 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Ripple and Noise Waveforms Vin=5 V, Vo=0.75 V Vin=5 V, Vo=3.3 V Vin=12 V, Vo=0.75 V Vin=12 V, Vo=3.3 V Note: Ripple and noise at full load, external load with 10 uF tantalum capacitor and 1 uF ceramic 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Transient Response Waveforms 50% to 100% load Transient at Vin=5 V, Vo=0.75 V 50% to 100% load Transient at Vin=12 V, Vo=0.75 V 50% to 100% load Transient at Vin=5 V, Vo=3.3 V 50% to 100% load Transient at Vin=12 V, Vo=3.3 V 100% to 50% load Transient at Vin=5 V, Vo=0.75 V 100% to 50% load Transient at Vin=12 V, Vo=0.75 V 100% to 50% load Transient at Vin=5 V, Vo=3.3 V 100% to 50% load Transient at Vin=12 V, Vo=3.3 V Note: Transient response at di/dt=2.5 A/uS, external load with 470 uF tantalum 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 4.5 Vdc - 14 Vdc Input 0.75 Vdc - 3.63 Vdc/10 A Output Mechanical Outline Pin Connections RECOMMENDED PAD LAYOUT Pin Function 1 Remote On/Off 2 Vin+ 3 SEQ 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. ©2007 Bel Fuse Inc. Specifications subject to change without notice. 011707 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