TDK-Lambda has extended its popular iQG series of DC-DC converters with new 504 W models, having efficiencies of up to 96,3%. Operating from a 48 V d.c. nominal input, the quarter-brick iQG range now includes 12 V/42 A outputs in addition to 300 W and 400 W rated parts. With elevated true useable power, the series is ideally suited for power-hungry applications in demanding thermal environments.
Utilising a dual cooling technique, the modules will deliver 38,5 A (438 W) in ambient temperatures of 55°C with airflow of 400 lfm. With the addition of a 0,5” heatsink, they can deliver 504 W at 70°C with airflow of 400 lfm. The dimensions follow the industry standard five-pin quarter-brick footprint of 57,9 x 36,8 x 12,9 mm. Accepting an input voltage of 39 V to 75 V, these additional iQG models maintain a tight output tolerance of ±210 mV (±1,7%) for all input, loading and temperature variations.
As an option, droop mode current share can be specified, allowing parallel operation for additional output current. Input-to-output isolation is 2250 V d.c. (basic) and the converters are safety certified to UL/CSA/EN 60950-1 (2nd edition), carrying the CE mark in accordance with the LV and RoHS directives.
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