Ault Debuts HDE1-75 DC/DC Single-Output Converter
Ault Inc. (Minneapolis, MN) debuted its new HDE1-75 dc/dc, single-output converter in an one-eighth-brick package at only 0.5in high. Using patent-pending Ault Tronix-Flex™ technology, the HDE dc/dc converters allow OEMs to build products that draw higher currents at higher ambient temperatures (25A on a 3.3V unit) and require less airflow without needing to thermally shut units off.
The HDE dc/dc converters disperse heat evenly to an integrated heatsink, which provides low thermal impedance of all power devices. Reliability increases because power device junction temperatures are 25% lower than the maximum allowable temperature.
The HDE units feature a FET array design for high power density (100W/in³; 85°C ambient temperature environments) by stacking parallel MOSFETs (Power Pak) on multi-level printed circuit boards using the height dimension to achieve high-current density. Each FET represents a resistance. The more FETs stacked in parallel, the lower the unit resistance. Low resistance means low power loss, giving OEMs high unit efficiency (89% typical).
The 75W HDE family features 36Vdc to 75Vdc input with output voltages of 3.3V, 2.5V and 1.8V. The HDE Series dc/dc converters are available for $67.50 in quantities of 1,000.
