1200W full-brick DC-DC converters offer 94% efficiency

TDK Corporation has introduced the TDK-Lambda PH1200A280 full-brick DC-DC converters for usage with HVDC input voltages from 200VDC to 425VDC. This further extends the PH-A280 series – with power levels including 50W, 75W, 100W, 150W, 300W, 600W and now 1,200W. These power modules are ideal for high voltage DC distributed power architecture systems seen in semiconductor test equipment, power transmission lines, data communications, industrial and renewable energy applications using input voltages ranging from 200VDC to 425VDC.

The converter's range has five output voltages: 12V, 24V, 28V, 36V and 48V. They offer a wide -40% to +20% adjustment range to accommodate non-standard voltages. Packaged in the industry standard full-brick package (61mm x 12.7mm x 116.8mm), they have an efficiency of 94% and can function at full load with baseplate temperatures between -40C and +100C. The converters can be conduction cooled, making them ideal for employment in sealed outdoor enclosures or liquid-cooled applications. Three tailored heatsinks are offered for use in forced air or convection cooling systems.

As standard, these DC-DC converter modules offer a current share circuit and an internal Oring FET for redundancy or higher power needs. Remote on/off, output adjustment, remote sense, 12V auxiliary output and a module good signal are also provided. The device has over-voltage and over-current protection, a five-year warranty and enables operation up to 5,000m altitude.

The series is fully isolated, with an input to output isolation of 3,000VAC, 2,500VAC input to baseplate and 500VAC output to baseplate. Safety certification is to the IEC/EN/UL/CSA 62368-1 standards with CE and UKCA marking to the Low Voltage and RoHS directives.