Murata Power Solutions Supplier Page

BEI15 Series DC/DC Converters

BEI15 series isolated wide input bipolar 15-watt DC/DC converters from Murata Power Solutions offer minimal heat buildup and "no fan" operation

BEI15 Series DC/DC ConvertersMurata Power Solutions' BEI-15 series features a full 15watt output in one square inch of board area. This isolated DC/DC converter family offers efficient regulated DC power for PCB mounting. The wide range 4:1 inputs on the 0.96" x 1.1" x 0.35" (24.4 x 27.9 x 8.9 mm) converters are either 9VDC to 36VDC (Q12 models) or 18VDC to 75VDC (Q48 models), which is ideal for battery-powered and telecom equipment. The industry-standard pinout fits its larger 1" x 2" converters. Fixed output voltages of ±5VDC, ±12VDC or ±15VDC are regulated to within ±0.25 percent. Applications include small instruments, area limited microcontrollers, data communications equipment, remote sensor systems, and vehicle and portable electronics.

The BEI-15 series includes full magnetic and optical isolation with basic protection up to 2250VDC (Q48 models) and 2000VDC (Q12 models). For powering digital systems, the outputs offer fast settling to step transients and will accept higher capacitive loads. Excellent ripple and noise specifications assure compatibility to noise-susceptible circuits. For systems requiring controlled startup/shutdown, an external remote On/Off control may use a switch, transistor, or digital logic. A wealth of self-protection features helps these devices avoid both converter and external circuit faults. These include input under voltage lockout and overtemperature shutdown. The outputs current limit using the “hiccup” auto restart technique and the outputs are short-circuit protected. Additional features include output over voltage and reverse conduction elimination. The high efficiency offers minimal heat buildup and “no fan” operation. Datasheet

  • Small footprint DC/DC converter, ideal for high current applications
  • Industry standard 0.96" x 1.1" X 0.35" open frame package and pinout
  • Wide range input voltages 9-36VDC and 18-75VDC
  • Bipolar ±5V, ±12V and ±15V outputs
  • Up to 15 watts or greater total output power with overtemperature shutdown
  • Isolation up to 2250VDC (basic), Q48 models
  • High efficiency synchronous rectifier forward topology
  • Usable -40 to 85°C temperature range (with derating)
  • Assembly and attachment for RoHS standards
  • Extensive self-protection shut down features
  • Meets UL 60950-1, CAN/CSAC22.2
    No. 60950-1, IEC60950-1, EN60950-1 safety approvals

Product Training Module (PTM): BEI15 DC/DC Converter Series Product Training Module (PTM):
BEI15 DC/DC Converter Series

Digi-Key P/N Murata P/N Description
811-2180-5-ND BEI15-050-Q12N-C CONV DC/DC DL OUT +/-5V NEG POL
811-2181-5-ND BEI15-050-Q12P-C CONV DC/DC DL OUT +/-5V POS POL
811-2182-5-ND BEI15-050-Q48N-C CONV DC/DC DL OUT +/-5V NEG POL
811-2183-5-ND BEI15-050-Q48P-C CONV DC/DC DL OUT +/-5V POS POL
811-2184-5-ND BEI15-120-Q12N-C CONV DC/DC DL OUT +/-12V NEG POL
811-2185-5-ND BEI15-120-Q12P-C CONV DC/DC DL OUT +/-12V POS POL
811-2186-5-ND BEI15-120-Q48N-C CONV DC/DC DL OUT +/-12V NEG POL
811-2187-5-ND BEI15-120-Q48P-C CONV DC/DC DL OUT +/-12V POS POL
811-2188-5-ND BEI15-150-Q12N-C CONV DC/DC DL OUT +/-15V NEG POL
811-2189-5-ND BEI15-150-Q12P-C CONV DC/DC DL OUT +/-15V POS POL
811-2190-5-ND BEI15-150-Q48N-C CONV DC/DC DL OUT +/-15V NEG POL
811-2191-5-ND BEI15-150-Q48P-C CONV DC/DC DL OUT +/-15V POS POL