ISOLATED DC/DC CONVERTERS 48V Input 8V/15A Output, 1/8 Brick 07CR-15T Series PRELIMINARY • Isolated • Input Under Voltage Lockout • High Efficiency • Output Overvoltage Shutdown • High Power Density • OCP/SCP • Fixed Frequency • Low Cost • Remote On/Off • Thermal Shutdown Description The 07CR-15T Series are isolated DC/DC converters that operate from a nominal 48V source. These converters are intended to provide isolation and step down to generate an intermediate bus for the purpose of powering non-isolated Point-of-Load (POL) converters. These units will provide up to 130W of output power from a nominal 48V input. These units are designed to be highly efficient and very low cost and are thus unregulated. The downstream POL converters will provide the precise regulation required by the load. Features include remote on/off, over current protection and undervoltage lockout. These converters are provided in an industry standard eighth-brick package. Part Selection Output Voltage 8V Input Voltage 36V-75V Max. Output Current 15A Max. Output Power 130W Typical Efficiency 95% Model Number Active High 07CR-15T08H Model Number Active Low 07CR-15T08L Note: Add “G” suffix at the end of the model number to indicate Tray Packaging. Absolute Maximum Ratings Parameter Input Voltage (continuous) Min -0.3V Typ - Max 100V Remote On/Off -0.3V - 100V Ambient Temperature -40°C - 85°C Storage Temperature -40°C - 125°C Notes Input Specifications Parameter Min 36V Typ - Input Current (full load) - - 3A Input Current (no load) - - 45mA Remote Off Input Current - 2mA 3mA Input Reflected Ripple Current (pk-pk) - - N/A Input Reflected Ripple Current (RMS) - - Input Voltage 2 I t Inrush Current Transient - Max 75V Notes Tested with simulated source impedance of 10uH, 5Hz to 20MHz; use a 47uF/100V electrolytic capacitor with ESR = 1 ohm max. at 200KHz at 25°C. N/A 2 0.039A s 2 0.062A s Turn On Voltage Threshold - 34.5V - Turn Off Voltage Threshold - 32.5V - 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 48V Input 8V/15A Output, 1/8 Brick Output Specifications Parameter Output Voltage Set Point Min Typ Max Vin=36V Vin=48V Vin=75V - 6V 8V 12.5V 6.5V - Vin=36V Vin=48V Vin=75V - 0.5V 0.5V 0.5V - - 30mV - 0A - 15A - 20A Short Circuit Surge Transient - 2 1.3A s 2.1A s Ripple and Noise (RMS) - 15mV 20mV Ripple and Noise (pk-pk) - 90mV 100mV Turn on Time - 10mS - Line Regulation Notes Load Regulation Regulation Over Temperature (-40°C to +85°C) Output Current Current Limit Threshold Overshoot at Turn on 2 - 0% 3% 0uF - 3000uF Overshoot - 100mV - Settling Time - 120uS 150uS Overshoot - 100mV - Settling Time - 120uS 150uS Output Capacitance Test conditions: 0-20MHz BW, with a 1uF ceramic capacitor and a 15uF Tantalum capacitor at the output; Vin=48V. Transient Response 25% ~ 50% Max Load Vin=48V 50% ~ 25% Max Load Test conditions: di/dt = 0.1A/uS, Vin=48V, with a 15uF tantalum capacitor at the output. Note: All specifications are typical at 25°C unless otherwise stated. General Specifications Parameter Efficiency Switching Frequency Over Temperature Protection Min Typ Max 93% 95% - 180KHz 200KHz 220KHz - 115°C - MTBF 2,569,594 hours Notes Vin=48V, Io=Io,max Average PCB temperature will not exceed 115°C. Calculated Per Bell Core TR-332 (IO = Nominal; Ta = 25°C) Dimensions Inches (L × W × H) Millimeters (L × W × H) Weight 2.30 x 0.9 x 0.41 58.4 x 22.8 x 10.41 - 23g - 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 48V Input 8V/15A Output, 1/8 Brick Control Specifications Parameter Remote On/Off Signal Low (Unit On) Signal High (Unit Off) Signal Low (Unit Off) Signal High (Unit On) Active Low Optional Active High Min Typ Max -0.3V - 0.8V 100V 2.5V - -0.3V - 0.8V 2.5V - 100V Notes 07CR-15T08L. The remote on/off pin open, Unit on. 07CR-15T08H. The remote on/off pin open, Unit on. EFFICIENCY Efficiency Data 96.00% 95.00% 94.00% 93.00% 92.00% 91.00% 90.00% 89.00% 88.00% 87.00% 86.00% 0.00 36V 48V 75V 5.00 10.00 15.00 OUTPUT CURRENT (A) Thermal Derating Curve 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 48V Input 8V/15A Output, 1/8 Brick Turn-On (Enable) Transient Response: di/dt=0.1A/uS, External Load Capacitance Co=15uF (tantalum capacitor) 50% to 75% and 75% to 50% load Transient at 48Vdc input and Ta=25 deg C External Load Capacitance: 15µF tantalum capacitor . 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 48V Input 8V/15A Output, 1/8 Brick Mechanical Drawing Pin Connections Pin Function 1 Vin+ 2 Remote On/Off 3 Vin- 4 Vout- 5 Vout+ 2005 Bel Fuse Inc. Specifications subject to change without notice. 010505 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