ISOLATED DC/DC CONVERTERS 48 Vdc Input 9.6 Vdc/16 A Output, 1/16 Brick Bus Converter SRCA-16S10L RoHS Compliant Rev.A • Isolated • Input Under Voltage Lockout • Fixed Frequency • Input Over Voltage Shutdown • High Efficiency • OCP/SCP • High Power Density • Thermal shutdown • Low Cost • Remote On/Off Description The SRCA-16S10L is an isolated dc/dc bus converter that operates from a nominal 48 Vdc source. This converter is intended to provide isolation and step down to generate an intermediate bus for the purpose of powering non-isolated Point-of-Load (POL) converters. This unit will provide up to 160 W of output power from a nominal 48 Vdc input. This unit is designed to be highly efficient and cost effective. The downstream POL converters will provide the precise regulation required by the load. Features include remote on/off, over current protection and under-voltage lockout. This converter is provided in an industry standard sixteenth-brick package. Part Selection Output Voltage 9.6 V Input Voltage 36 V - 60 V Max. Output Current 16 A Max. Output Power 153 W Typical Efficiency 95% Model Number Active Low SRCA-16S10L 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 Parameter Input Voltage (continuous) Min -0.3 V Typ - Max 80 V Notes Remote On/Off -0.3 V - 18 V Ambient Temperature -40 °C - 85 °C Storage Temperature -40 °C - 125 °C Input Specifications Parameter Input Voltage Input Current (full load) Min 36 V Typ - Max 60 V - - 3.5 A Notes Input Current (no load) - - 100 mA Remote Off Input Current - 4 mA 10 mA Input Reflected Ripple Current (pk-pk) - 40 mA 120 mA Input Reflected Ripple Current (rms) - 10 mA 30 mA I t Inrush Current Transient - 0.039 A s 0.062 A s Input Over-Voltage Protection Threshold - 63 V - 2 2 Active Low Tested with simulated source impedance of 10 uH, 5 Hz to 20 MHz; use a 100 uF/100 V electrolytic capacitor and 1 uF/100 V ceramic capacitor at the input. 2 Turn On Voltage Threshold - 35 V - Turn Off Voltage Threshold - 30 V - Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com ISOLATED DC/DC CONVERTERS 48 Vdc Input 9.6 Vdc/16 A Output, 1/16 Brick Bus Converter Output Specifications Parameter Output Voltage Set Point Min Typ Max Vin=36 V Vin=48 V Vin=60 V 7.0 V 9.4 V 11.8 V - 7.2 V 9.6 V 12 V 4.8 V 7.4 V 9.8 V 12.2 V 5.5 V Vin=36 V Vin=48 V Vin=60 V - 0.6 V 0.6 V 0.6 V 0.9 V 0.9 V 0.9 V - 120 mV 200 mV Line Regulation Notes lo=no load Load Regulation Regulation Over Temperature (-40 °C to +85 °C) Output Current 0A - 16 A Current Limit Threshold 19 A - 26 A Short Circuit Surge Transient - 1.3 A s 2.1 A s Ripple and Noise (rms) - 10 mV 30 mV Ripple and Noise (pk-pk) - 90 mV 150 mV Turn on Time - 10 mS 20 mS Overshoot at Turn on - 0% 3% 0 uF - 2000 uF Output Capacitance 2 2 Test conditions: 0-20 MHz BW, with a 1 uF ceramic capacitor and a 10 uF Tantalum capacitor at the output; Vin=48 V. Transient Response 50% ~ 75% Max Load 75% ~ 50% Max Load Overshoot - 120 mV 250 mV Settling Time - 100 uS 250 uS - 120 mV 250 mV - 100 uS 250 uS Overshoot Vin=48 V Settling Time Test conditions: di/dt = 0.5 A/uS, Vin=48 V and external load capacitance Co=2*270 uF OSCAN capacitor at the output. Note: All specifications are typical at 25 °C unless otherwise stated. General Specifications Parameter Min 93% Typ 95% Max - Switching Frequency 140 kHz 160 kHz 180 kHz Isolation Capacitance - 1500 pF - Isolation Voltage - 500 V - Over Temperature Protection - 115 °C - Efficiency MTBF Notes Vin=48 V, full load Calculated Per Bell Core SR-332 (IO=80% full load; Vo=12 V; Ta = 25 °C) 1,774,032 hours Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight - 1.30 x 0.90 x 0.445 33.02 x 22.86 x 11.32 16.6 g - 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 ISOLATED DC/DC CONVERTERS 48 Vdc Input 9.6 Vdc/16 A Output, 1/16 Brick Bus Converter Control Specifications Parameter Min Typ Max -0.3 V - 0.8 V 2.4 V - 18 V Notes Remote On/Off Signal Low (Unit On) Active Low Signal High (Unit Off) SRCA-16S10L. The remote on/off pin open, Unit off. Efficiency Data 98.00% 96.00% Efficiency 94.00% 92.00% 36 V 90.00% 48 V 88.00% 60 V 86.00% 84.00% 82.00% 80.00% 1.6 A 4.0 A 8.0 A 12 A 16 A Output current Thermal Derating Curve Note: Maximum output power derating curves vs. ambient air temperature for airflow rates of 0 LFM through 400 LFM with air flowing from input to output (nominal input voltage). Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 • Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com ISOLATED DC/DC CONVERTERS 48 Vdc Input 9.6 Vdc/16 A Output, 1/16 Brick Bus Converter Ripple and Noise Waveform Note: Ripple and noise at full load, 48 V input and Ta=25 deg C, and with a 10 uF tantalum capacitor and 1 uF ceramic capacitor at the output. Transient Response Waveforms 50% to 75% load Transient at 48 V input 75% to 50% load Transient at 48 V input Note: Transient Response at di/dt=0.5 A/uS, Cout=2*270 uF OS-CAN CAP, 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 ISOLATED DC/DC CONVERTERS 48 Vdc Input 9.6 Vdc/16 A Output, 1/16 Brick Bus Converter Mechanical Outline Pin Connections Pin 1 2 3 4 5 Function Vin+ Remote On/Off VinVoutVout+ 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. 031307 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