Vicor Corporation announced the expansion of its ultra-high density Picor Cool-Power PI31xx series of isolated, ZVS-based DC-DC converters optimized for 24 V industrial, 28 V aerospace and defense, and demanding wide temperature applications. The new converters retain the product series’ signature 0.87" x 0.65" x 0.265" (2.2 x 1.65 x 0.67 cm) surface-mount package profile to provide up to 334 W/in3 power density and 2.25 kV input to output isolation. The new converters utilize an advanced Zero-Voltage Switching (ZVS) architecture and high-performance planar magnetics to enable IC-like density and greater PCB layout flexibility in space-constrained environments. The high-switching frequency (900 kHz) of the converters reduces input filter and output capacitance requirements, further reducing space constraints.
Fully equipped with a variety of programmable features, the converters include output voltage trimming, programmable soft-start capability and remote on/off capabilities. There is also a temperature monitor function, providing an analog output voltage proportional to the internal module temperature. The converters are protected against fault conditions including input over-voltage, under-voltage lockout, over-temperature, and output over-voltage protection. A constant current limit threshold is employed to protect against short circuit and overload conditions. All fault conditions have an auto-restart function.