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The GNT428ABEG from SL Power Electronics (Condor/Ault Brands) is a 400W AC/DC converter featuring a regulated 28VDC output. It accepts a universal AC input voltage of 90 to 270VAC at 45-65Hz, with typical efficiency of 91% at 230VAC and 88% at 120VAC. The converter includes active power factor correction (minimum 0.96), remote sense compensation up to 500mV, and cycling overload protection at 470W typical.
Designed for continuous operation at 400W with 200lfm forced air cooling, the unit can deliver 450W peak for up to 1 minute (10% duty cycle). Electrical specifications include a maximum ripple and noise of 1% pk-pk, transient response of 500µs to 1% for a 50% load step, and a hold-up time of 20ms at full load. The switching frequency is 170kHz (output) and 140kHz (PFC).
Housed in a 236.5 x 100.0 x 40.0 mm chassis-mount package, the GNT428ABEG operates over 0°C to 70°C with derating. It is certified to ITE (EN/CSA/IEC/UL62368-1) and medical safety standards (EN/IEC/UL 60601-1, CSA22.2 No. 601-1). MTBF is rated at 300K hours per Telcordia.
The GNT428ABEG provides a 28VDC output with a nominal current of 10.7A, delivering 400W continuous power.
The AC input voltage range is 90 to 270VAC at 45-65Hz.
The operating temperature range is 0°C to 70°C with derating required at higher temperatures.
It complies with ITE safety standards EN/CSA/IEC/UL62368-1 and medical safety standards EN/IEC/UL 60601-1, CSA22.2 No. 601-1.
Yes, it features active power factor correction with a typical PF of 0.99 and a minimum of 0.96.
Typical efficiency is 91% at 230VAC and 88% at 120VAC.