With typical efficiencies of up to 90 percent, internal heating is minimized allowing the HQA85 converters to operate in high ambient temperatures of up to 115o C and a minimum of –40o C. No optocouplers are used in the design for enhanced reliability at high temperatures, and the switching frequency is fixed at 270 kHz for simplified noise filtering.
The converter pinout follows the industry standard five pin quarter brick footprint featuring negative logic remote on/off and +/- remote sense. Two package styles are offered; a flanged type measuring 2.39 x 2.2 x 0.5 in. and a non-flanged version measuring 2.39 x 1.54 x 0.5 in.
Input-to-output and input to baseplate isolation is 2,250 Vdc (basic insulation), and the converters are safety certified to UL/CSA/EN 60950-1, with the CE marking in accordance with the LV Directive and RoHS Directives.