QM48T45 Family Series
QM48T45 Family Series

QM48T45 Family Series

The QmaXTM Series of high current single output DC-DC converters set new standards for thermal performance and power density in the quarter-brick package. The 45 A QM48 converters of the QmaXTM Series provide outstanding thermal performance in high temperature environments that is comparable to or exceeds the industry's leading 50 A half-bricks. This performance is accomplished through the use of patented/patent-pending circuit, packaging, and processing techniques to achieve ultra-high efficiency, excellent thermal management, and a very low-body profile. The low-body profile and the preclusion of heat sinks minimize impedance to system airflow, thus enhancing cooling for both upstream and downstream devices. The use of 100% automation for assembly, coupled with advanced electronic circuits and thermal design, results in a product with extremely high reliability. Operating from a 36-75 V input, the QmaXTM Series converters provide any standard output voltage from 3.3 V down to 1.0 V. Outputs can be trimmed from -20% to +10% of the nominal output voltage (-20% for output voltages 1.2 V and 1.0 V), thus providing outstanding design flexibility.
Features
  • On-board input differential LC-filter
  • Start-up into pre-biased load
  • No minimum load required
  • Remote output sense
  • Positive or negative logic ON/OFF option
Specifications
  • Power (W): 81
  • Input Voltage Range (VDC): 36 ~ 75
  • Output Voltage (VDC): 1.8
  • Operating Temperature Range (ºC): -40 ~ +85
  • Standard Footprint: 1
  • Isolation (VDC): 2000
  • Isolated: Yes
  • Safety Standards: 62368
  • Safety Approvals: CB, CSA, Nemko
  • RoHS Compliant: Yes
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