WR12S05

WR-U SERIES Single and dual output • • • • • 30 Watts output power UL approved (48V input models) 2:1 input range Efficiency to 86% Isolated outputs The WR-U series DC/DC converters accept a wide input voltage range of 9 to 18VDC, 18 to 36VDC, and 36 to 72VDC. A 100kHz switching regulator produces operating efficiencies as high as 86% with output loads as light as 25% of full load. These 30 Watt models provide for remote sensing, input/output isolation of 500VDC minimum, and short circuit protection. The WRU Series incorporates six sided continuous EMI/RFI shielding. The “U” package measures 2.56 x 4.56 x 0.83 inches and is PCB mountable. Other pertinent specifications include: overvoltage protection on all outputs, operating temperature range of –25°C to 71°C with no derating required and all models are free-air convection cooled. [ 2 YEAR WARRANTY ] SPECIFICATION OUTPUT SPECIFICATIONS Voltage accuracy Voltage adjustability Remote sense Line regulation Load regulation Voltage balance Ripple and noise Transient response Temperature coefficient Overvoltage protection Singles Singles All specifications are typical at nominal input, full load at 25°C unless otherwise stated INPUT SPECIFICATIONS CONTINUED ±1.0% ±10%, max. Yes ±0.2%, max. ±5.0%, max. ±1.0%, max. ±2.0% 75mV pk-pk 10mV rms, max. ±1.0% error band 500µ rec. s ±0.02%/°C, max. Case material Isolation voltage See Note 5 Switching frequency Input/Output Input/Case Fixed Safety 500VDC 250VDC 100kHz UL1950 Black coated copper with non-conductive base UL94V-0 390g (13.77oz) See Note 6 840,000 hours Remote ON/OFF Logic compatibility Ec-ON Ec-OFF Shutdown idle current Input resistance Control common GENERAL SPECIFICATIONS Efficiency Typical 75% to 86% CMOS or open collector TTL +5.5VDC min. or open-circuit max. 1.8VDC 5mA 0VDC