PSK-4-3

The CUI Inc. PSK-4-3 is an internal AC-DC power supply designed for various applications, including household appliances and ITE commercial equipment. It provides a stable 3.3 VDC output with a maximum current of 1.2A, resulting in a total output power of 4W.

This power supply boasts a universal input voltage range of 85-305 VAC or 120-431 VDC, making it adaptable to different power sources. It achieves a typical efficiency of 74% at 230 Vac input and full load, with a low no-load power consumption of less than 0.075W. The unit operates within an ambient temperature range of -40°C to 80°C, with derating applied at higher temperatures.

Key features include continuous short circuit, over current, and over voltage protection, ensuring reliable operation. The PSK-4-3 meets safety standards such as IEC/EN/UL 62368-1 and IEC/EN 60335-1, and complies with EN 55032 Class B and CISPR/FCC Class B emissions standards. It is housed in a 4-DIP module package and utilizes through-hole mounting.

With an isolation voltage of 3,000 Vac (input to output), line regulation of ±1%, and load regulation of ±5% for the 3.3V model, the PSK-4-3 offers robust performance for demanding applications. It also supports a capacitive load of up to 1,200μF and has a hold-up time of 16 ms at 115 Vac.