07CR BEL
Document overview
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Technical content
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
- 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 Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number 8V 48V 18A 140W 95% 07CR-18S08L 12V 48V 12A 140W 95% 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 Min Typ Max Notes Input Voltage Range 36 VDC 60 VDC Input Current (no load) 45mA Input Current (full load) 3A Reflected Ripple Current (pk-pk) 10mA rms 30mA pk-pk Reflected ripple current through a 10uH source inductor at nominal input voltage and rated load current. Output Specifications Parameter Min Typ Max Notes Output Voltage Setpoint 07CR-18S080 07CR-12S120 Vin / 6 Vin / 4 Unregulated output will track input voltage with a 6:1 or 4:1 ratio. Output Current 07CR-18S080 07CR-12S120 18A 12A Load Regulation 07CR-18S080 07CR-12S120 0.5V 0.7V Ripple & Noise 07CR-18S080 07CR-12S120 110mV / 20mV 150mV / 40mV pk-pk / rms 0 to 20MHz Bandwidth Use 1.0uF ceramic cap and 15uF/100mOhm tantalum on output 07CR “Cimarron” Series PRELIMINARY
2004 Bel Fuse Inc. Specifications subject to change without notice. 020304 CORPORATE FAR EAST EUROPE Bel Fuse Inc. Bel Fuse Ltd. Bel Fuse Europe Ltd.
206 Van Vorst Street 8F/ 8 Luk Hop Street Preston Technology Management Centre
Jersey City, NJ 07302 San Po Kong Marsh Lane, Suite G7, Preston Tel 201-432-0463 Kowloon, Hong Kong Lancashire, PR1 8UD, U.K. Fax 201-432-9542 Tel 852-2328-5515 Tel 44-1772-556601 www.belfuse.com Fax 852-2352-3706 Fax 44-1772-888366 www.belfuse.com www.belfuse.com Bus Converter 48V Input / 140W Output General Specifications Parameter Specification Switching Frequency 200kHz (6:1) 150KHz (4:1) typical (fixed) Dimensions inches mm 2.30 x .9 x .39 58.4 x 22.8 x 9.8 Weight 23g Operating Temperature -40°C to 85°C Non-Operating Temperature -55°C to 125°C Protection Features Short circuit Over current Undervoltage Continuous 120% to 140% max Io UVLO Vin < 34.0 Remote On/Off Active Low (Optional Active High) Low: 0V to 0.8V High: 2.5V to 60V Pin Connections Pin Function 1 + Vin