07CM-20S BEL | Alldatasheet

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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 / 12V Output / 20A

  • Ideal for Intermediate Bus Architectures
  • Industry standard quarter-brick package
  • Up to 240W at 96% efficiency
  • 1500V isolation
  • Remote on/off
  • Low cost
  • Safety Agency Approvals

Description

The 07CM-20S “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 240W 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 quarter-brick package. Part Selection Output Voltage Input Voltage Max. Output Current Max. Output Power Typical Efficiency Model Number 12V 48V 20A 240W 96% 07CM-20S12L 8V 48V 30A 240W 96% 07CM-30S08L Change last character in part number from “0” to “H” for Active High On/Off Logic (e.g. 07CM-20S12H) Input Specifications Parameter Min Typ Max Notes Input Voltage Range 36 VDC 55 VDC Input Current (no load) 80mA Input Current (full load) 5.3A Reflected Ripple Current (pk-pk) 50mA rms 100mA pk-pk Reflected ripple current through a 12uH source inductor at nominal input voltage and rated load current. Output Specifications Parameter Min Typ Max Notes Output Voltage 07CM-20S12x 07CM-30S08x 36V in 8.8V 5.8V 48V in 12.0V 8.0V 55Vin 14.0V 9.4V Setpoint at no load. Output Current 07CM-20S12x 07CM-30S08x 20A 30A Load Regulation 5% Ripple and Noise 100mV pk-pk 45mV rms 0 to 20MHz Bandwidth Use 1.0uF ceramic cap and 15uF/100mOhm tantalum on output 07CM-20S/30S Series PRELIMINARY

ã2003 Bel Fuse Inc. Specifications subject to change without notice. 011303 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 / 12V Output / 20A Output Specifications (continued) Parameter Min Typ Max Notes Transient Response Max deviation Recovery to within ± 1% 200mV 50uS 350mV 100uS di/dt =0 .1A/uS, Vin =48VDC Ta = 25°C, 25% load change. General Specifications Parameter Specification Switching Frequency 120kHz typical (fixed) Dimensions inches mm 2.28 x 1.45 x 0.50 57.9 x 36.8 x 12.7 Weight 42g (1.5oz) Operating Temperature 0°C to 70°C Non-Operating Temperature -55°C to 125°C MTBF (MIL-HDBK-217K) >1,000,000 hours Protection Features Short circuit Over current Undervoltage Continuous 120% to 140% max Io UVLO Vin < 39.0 Remote On/Off Active Low (Optional Active High) Low: 0V to 0.8V High: 2.4V to 18V Safety Agency Approvals (pending) UL / cUL Recognized Certified to EN60950 Pin Connections Pin Function 1 + Vin

2 Remote On/Off

+ Vin on/off - Vin + Vout - Vout 2.28” 1.45” Top View 60.00% 65.00% 70.00% 75.00% 80.00% 85.00% 90.00% 95.00% 100.00% 1 2.5 5 10 15 20 Efficiency vs. Output Current (A)