The encapsulated quarter brick HQA120 models can deliver 120W output power from a 9V to 40V input range that can also support a 50V input for 1 second. The 89% efficient converters are suitable for use in COTS, communications and industrial equipment using 12 V, 24 V and 28 V power rails, and other output versions are planned for the coming months.
The HQA120 has been qualified using methods consistent with MIL-STD-883 & 202, and offers a two screening and operating temperature options. The M-Grade has functional testing in cold, hot and room ambient temperatures, and an extended 96 hour burn-in with ten-cycle temperature testing. The S-Grade has functional testing at room ambient temperature and a standard burn-in period. The full load operating temperature for the M-Grade is -55 to +115°C and -40 to +115°C for the S-Grade.
Two baseplate mounting versions are available. The flanged format measures 60.6mm x 55.9 mm x 12.7 mm, with the non-flanged following the standard quarter brick format and measuring 60.6mm x 39 mm x 12.7 mm. Negative logic remote on/off and remote sense is provided.
All models are fully regulated, have a constant switching frequency for easier system EMC integration and utilise no opto-couplers in the control loop for increased reliability. Full auto-recovery protection is provided and the output can be adjusted ±10% or turned on or off remotely.
Safety certification includes IEC/EN 60950-1, UL/CSA 60950-1 with CE marking for the Low Voltage and RoHS2 Directives. Input to output and input to baseplate isolation is 2250Vdc.
For more information visit the TDK-Lambda website at: www.uk.tdk-lambda.com/hqa.