IR’s D series of Two Output Dc-DC converters. Photo: IR

[Via Satellite 06-27-2014] International Rectifier (IR) introduced its D series of low power radiation-tolerant two output Direct Current-to-Direct Current (DC-DC) converters for satellite power systems. The new series offers low output noise, guaranteed End-of-Life (EOL) output voltage drift with notable output cross regulation. Each converter output is independently regulated with 5-Watt maximum rated output power or 10-Watt total output power.

The series is available in two output configurations. The first configuration offers the traditional positive and negative output combination for analog and linear circuit loads. The second configuration offers two positive outputs, where each output may have the same or different voltages with each voltage as low as 1V or as high as 5V. The D series is designed to meet Military Standard (MIL-STD) 1547B and NASA’s Electronic, Electrical and Electromechanical (EEE)-INST-002 standard, the industry’s de-rating standards for EEE components stress de-rating.

The converters incorporate IR’s Pulse-Width Modulation (PWM) controller Integrated Circuit (IC), which integrates several circuitries to decrease overall component count. The converters weigh less than 2 ounces, and are characterized with Total Ionizing Dose (TID) of more than 50K Rad (Si), and Single Event Effect (SEE) Linear Energy Transfer (LET) of heavy ions more than 40 MeV square centimeters per milligram.