NON-ISOLATED DC/DC CONVERTERS 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/10 A Output SRBC-10A2Ax RoHS Compliant Rev.A 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 Remote On/Off Sequencing Active Low/High (option) Remote Sense Industrial Temperature Range Able to Sink/Source Current Description The Bel SRBC-10A2Ax 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 Vdc output. These modules provide precisely regulated voltage programmable via external resistor from 0.75 Vdc to 5.0 Vdc over a wide range of input voltage (8.3 Vdc - 14 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, over current protection, short current protection, wide input, and programmable output voltage. Part Selection Output Input Max. Output Max. Output Typical Model Number Model Number Voltage Voltage Current Power Efficiency Active Low Active High 0.75 V - 5.0 V 8.3 V - 14 V 10 A 50.0 W 95% SRBC-10A2AL SRBC-10A2A0 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 to7 for RoHS 5 part numbers. Absolute Maximum Ratings Parameter Min Typ Max Notes Input Voltage (continuous) -0.3 V - 15 V Output Enable Terminal Voltage -0.3 V - 15 V 1 Sequencing Voltage -0.3 V - Vin Ambient Temperature -40 C - 85 C Storage Temperature - -55 C 125 C Notes: All specifications are typical at 25 C unless otherwise stated. 1. SRBC-10A2Ax 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 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 8.3 Vdc - 14 Vdc Input 0.75 Vdc - 5.0 Vdc/10 A Output Input Specifications Parameter Min Typ Max Notes Input Voltage Vo, set 3.63 V 8.3 V 12 V 14 V 8.3 V 12 V 13.2 V Vo, set > 3.63 V An input line fuse must always be Input Current (full load) - - 6.5 A used. Input Current (no load) - 50 mA - Remote Off Input Current - 2 mA - Tested with one 1000 uF/25 V AL Input Reflected Ripple Current input capacitor with ESR=0.03 ohm - - 400 mA (pk-pk) max and 4 47 uF/16 V tan capacitors with ESR=0.013 ohm max at 100 kHz, & simulated source Input Reflected Ripple Current - - 150 mA impedance of 1000 nH, 5 Hz to (rms) 20 MHz. 2 2 2 I t Inrush Current Transient - 0.04 As 0.08 As Turn-on Voltage Threshold - 8.2 V Turn-off Voltage Threshold - 7.9 V Note: All specifications are typical at 25 C unless otherwise stated. Output Specifications Parameter Min Typ Max Notes Output Voltage Set Point -2% Vo,set - 2% Vo,set Vin=12 V, full load Load Regulation - 0.1% Vo,set - Line Regulation - 0.1% Vo,set - Regulation Over Temperature - 0.3% Vo,set - Tref=Tamin to Tamax (-40 C to +85 C) Output Current 0 A - 10 A Current Limit Threshold - 200% Io - 2 2 Short Circuit Surge Transient - 1 As 3 As Tested with 0-20 MHz, with 10 uF Ripple and Noise (pk-pk) - 50 mV 100 mV tantalum capacitor & 1 uF Ripple and Noise (rms) - 20 mV 40 mV ceramic capacitor Turn on Time - 6 mS 10 mS Overshoot at Turn on - - 1% Vo,set Output Capacitance - - 5000 uF Transient Response 50% ~ 100% Max Load - 100 mV - di/dt=2.5 A/uS Vin=12 V Settling Time - 50 uS - VO = 0.75 V - and with 2 150 uF polymer 5 V 100% ~ 50% Max Load - 100 mV - capacitors at the output Settling Time - 50 uS - 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