NGB425S48K

The NGB425S48K is an AC/DC converter from SL Power Electronics Manufacture of Condor/Ault Brands, delivering a single 48V output at up to 300W. It accepts a universal input range of 85 to 264 VAC at 47 to 63 Hz, with a maximum input current of 3.7 A at 115 VAC and 1.8 A at 230 VAC. The converter achieves a typical efficiency of over 90% and draws less than 0.5 W under no-load conditions.

This open-frame, chassis-mount unit is designed for both medical and ITE (commercial) applications, holding safety approvals including CE, cURus, and DEMKO. It features 4.5 kV isolation voltage between input and output (2 MOPP), and provides comprehensive protection: overvoltage (115-155% of nominal), overload (130-180% of rated output), short circuit (latch mode), and thermal protection (auto-recovery). Output ripple and noise is limited to 1% of Vout, with load regulation of 2% and line regulation of 1%.

Operating over a -20°C to 80°C temperature range with derating, the NGB425S48K is housed in a compact 127.0 x 76.2 x 38.1 mm footprint. It includes adjustable output voltage (±5% range) and a standby output, making it suitable for a variety of power supply needs. The electrolytic capacitor lifetime exceeds 10 years under typical operating conditions.