NON-ISOLATED DC/DC CONVERTERS 4.5V-14V Input 0.75V-3.63V/10A Output S7BC-10E2Ax Series • Non-Isolated • Under-voltage Lockout (UVLO) • High Efficiency • Over Temperature Protection • High Power Density • OCP/SCP • Excellent Thermal Performance • Wide Input • Low Cost • Wide Trim • Flexible Output Voltage Sequencing (option) • Remote On/Off • Active Low/High (option) • Remote Sense • Industrial Temperature Range • Able to Sink & Source Current Description The Bel S7BC-10E2Ax is part of the non-isolated DC/DC power converter series. The modules use a SMT package. These converters are available in a range of output voltages from 0.75V to 3.63V over a wide range of input voltage (Vin = 4.5V-14V). The Bel S7BC-10E2Ax has a sequencing feature that enables designers to implement various types of output voltage sequencing when powering. The efficiency is typically 93% at 3.3V output at 12V 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 - 3.63V 4.5V - 14V 10A 36.3W 93% S7BC-10E2AL S7BC-10E2A0 Note: Add “G” suffix at the end of the model number to indicate Tray Packaging. Absolute Maximum Ratings Min Typ Max Input Voltage (continuous) Parameter -0.3V - 15V Output Enable Terminal Voltage -0.3V - 15V Sequencing Voltage 1 -0.3V - Vin Ambient Temperature -40°C - 85°C Storage Temperature -55°C - 125°C Notes Notes: All specifications are typical at 25°C unless otherwise stated. 1. S7BC-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 4.5V-14V Input 0.75V-3.63V/10A Output Input Specifications Parameter Min Typ Max Notes 4.5V Vo,set +1.5V - 14V 14V Input Current (full load) - - 8.6A Input Current (no load) Remote Off Input Current - 40mA 2mA - Input Reflected Ripple Current (pk-pk) - - 400mA Input Reflected Ripple Current (RMS) - - 150mA I2t Inrush Current Transient Turn-on Voltage Threshold Turn-off Voltage Threshold - 0.04A2s 4.3V 4.0V 0.08A2s Input Voltage Vo,set < 3.0 Vo,set ≥ 3.0 An input line fuse must always be used. Tested with one 1000uF/25V AL input capacitor with ESR=0.03 ohm max and 4 × 47uF/16V tan capacitors with ESR=0.013 ohm max at 100KHz, & simulated source impedance of 1000nH, 5Hz to 20MHz. Note: All specifications are typical at 25°C unless otherwise stated. Output Specifications Parameter 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 Min -2%Vo,set - Typ 0.1%Vo,set 0.1%Vo,set Max 2%Vo,set - - 0.3Vo,set - 0A - 200% Io,out 2 1A s 10A 3A2s Ripple and Noise (pk-pk) - 30mV 75mV Ripple and Noise (RMS) - 12mV 35mV Turn on Time Overshoot at Turn on Output Capacitance Transient Response 50% ~ 100% Max Load Settling Time 100% ~ 50% Max Load Settling Time 0uF 8mS - 20mS 1% 5600uF VO = 0.75V 3.63V - 160mV 50uS 160mV 50uS Notes Vin=12V, full load Tref=Ta, min to Ta, max - Tested with 0-20MHz, with 10uF tantalum capacitor & 1uF ceramic capacitor at the output di/dt=2.5A/uS; Vin=5V & 12V; and with 470uF 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 4.5V-14V Input 0.75V-3.63V/10A Output General Specifications Parameter Min Typ Max Notes Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=0.75V - 92% 91% 89% 88% 86% 80% - Vo=3.3V Vo=2.5V Vo=1.8V Vo=1.5V Vo=1.2V Vo=0.75V - 93% 92% 90% 89% 87.5% 81% - 265KHz 300KHz 335KHz - 130°C - 0.7525V - 3.63V - - 0.5V Efficiency Measured at Vin=5V, full load Efficiency Switching Frequency Over Temperature Shutdown 1 Output Voltage Trim Range Remote Sense Compensation MTBF Measured at Vin=12V, full load Calculated Per Bell Core TR-332 (IO =80%Io,max; Vo=3.3V; Vin=12V; 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) -0.2V - 0.3V Signal High (Unit On) - - Vin, max S7BC-10E2A0; Remote On/Off pin open, Unit on. Signal Low (Unit On) -0.2V - 0.3V Signal High (Unit Off) 2.5V - Vin, max 25mS - - - - 2V/mS Remote On/Off S7BC-10E2AL; Remote On/Off pin open, Unit on. Voltage Sequencing Sequencing Delay Time Sequencing Slew Rate Capability Tracking Accuracy Power-Up Power-Down - 100mV 300mV 200mV 500mV 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 4.5V-14V Input 0.75V-3.63V/10A 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 Rtrimup 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 4.5V-14V Input 0.75V-3.63V/10A 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 Module 1.8V 85.0% 5.0V 80.0% 12.0V 75.0% Efficiency Efficiency 90.0% 70.0% 2.5A 5A 10A 7.5A 95.0% 90.0% 85.0% 5.0V 80.0% 75.0% 70.0% 12.0V 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 7.5A Module 1.5V 95.0% 1A 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 4.5V-14V Input 0.75V-3.63V/10A Output Thermal Derating Curves S7BC-10E2Ax, Vo=0.75V S7BC-10E2Ax, Vo=1.8V S7BC-10E2Ax, Vo=3.3V 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 4.5V-14V Input 0.75V-3.63V/10A Output Pin Connections Pin Function 1 Remote On/Off 2 Vin+ 3 SEQ 4 Ground 5 Vout+ 6 Trim 7 Remote Sense ©2004 Bel Fuse Inc. Specifications subject to change without notice. 121004 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