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| Bus Converter 48V Input / 140W Output 07CR "Cimarron" Series * * * * * * PRELIMINARY Ideal for Intermediate Bus Architectures Industry standard eighth-brick package Up to 120W at 95% efficiency 1500V isolation Remote on/off Low cost Description The 07CR "Cimarron" 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 140W of output power from a nominal 48V input with either a 4:1 or 6:1 ratio. 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 12V Input Voltage 48V 48V Max. Output Current 18A 12A Max. Output Power 140W 140W Typical Efficiency 95% 95% Model Number 07CR-18S08L 07CR-12S12L Change last character in part number from "L" to "H" for Active High On/Off Logic (e.g 07CR-18S08H) Input Specifications Parameter Input Voltage Range Input Current (no load) Input Current (full load) Reflected Ripple Current (pk-pk) Min 36 VDC Typ Max 60 VDC 45mA 3A 10mA rms 30mA pk-pk Notes Reflected ripple current through a 10uH source inductor at nominal input voltage and rated load current. Output Specifications Parameter Output Voltage Setpoint 07CR-18S080 07CR-12S120 Output Current 07CR-18S080 07CR-12S120 Load Regulation 07CR-18S080 07CR-12S120 Ripple & Noise 07CR-18S080 07CR-12S120 Min Typ Vin / 6 Vin / 4 18A 12A 0.5V 0.7V 110mV / 20mV 150mV / 40mV pk-pk / rms 0 to 20MHz Bandwidth Use 1.0uF ceramic cap and 15uF/100mOhm tantalum on output Max Notes Unregulated output will track input voltage with a 6:1 or 4:1 ratio. Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302 * Tel 201-432-0463 * Fax 201-432-9542 * www.belfuse.com Bus Converter 48V Input / 140W Output General Specifications Parameter Switching Frequency Dimensions inches mm Weight Operating Temperature Non-Operating Temperature Protection Features Short circuit Over current Undervoltage Remote On/Off Active Low (Optional Active High) 2.30 x .9 x .39 58.4 x 22.8 x 9.8 23g -40C to 85C -55C to 125C Continuous 120% to 140% max Io UVLO Vin < 34.0 Low: 0V to 0.8V High: 2.5V to 60V Specification 200kHz (6:1) 150KHz (4:1) typical (fixed) Pin Connections Pin 1 2 3 4 5 Function + Vin Remote On/Off - Vin - Vout + Vout 2004 Bel Fuse Inc. Specifications subject to change without notice. 020304 CORPORATE Bel Fuse Inc. 206 Van Vorst Street Jersey City, NJ 07302 Tel 201-432-0463 Fax 201-432-9542 www.belfuse.com FAR EAST 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 EUROPE 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 |
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