The document describes the output specifications, mechanical characteristics, safety approvals, and applications of the PSA-45 series products. The products have multiple output voltages such as +3.3V, +5V, +12V, +15V, +24V, etc., and are suitable for networking, mini-microcomputers, peripherals, and terminals. The products feature an industrial-grade quality system, zero minimum loads, extended design life, and surface mount controller.
The PSA-45 Series from Phihong is a 45 W universal Class B EMI power supply offering up to four selectable outputs (3.3 V, 5 V, 12 V, 15 V, 24 V) for networking, mini‑microcomputers, and peripheral applications. It supports a wide input voltage range of 90‑264 VAC and includes protections such as over‑voltage crowbar and short‑circuit auto‑restart.
Key technical data include a 70 % efficiency at 45 W/120 VAC, 50 kHz switching frequency, dimensions of 127 mm × 30 mm × 76.2 mm, weight of 0.27 kg, and safety certifications UL 1950, TUV IEC 950, CSA 22.2 and CE. The unit is designed for industrial use with a hold‑up time of 12 ms and an MTBF exceeding 100 000 hours.
| Output Voltages | +3.3V, +5V, +12V, +15V, +24V |
|---|---|
| Maximum Output Current | 9 A |
| Efficiency (45 W, 120 VAC) | 70 % |
| Input Voltage Range | 90‑264 VAC |
| Input Frequency | 47‑63 Hz |
| Dimensions (L × H × W) | 127 mm × 30 mm × 76.2 mm |
| Weight | 0.27 kg |
| Safety Approvals | UL 1950, TUV IEC 950, CSA 22.2, CE |
| MTBF | > 100 000 hours |
| Switching Frequency | 50 kHz (typical) |
The PSA-45 Series provides selectable outputs of +3.3 V, +5 V, +12 V, +15 V and +24 V.
It is certified to UL 1950, TUV IEC 950, CSA 22.2 and CE standards.
The unit achieves 70 % efficiency when delivering 45 W at 120 VAC.
It measures 127 mm long, 30 mm high, 76.2 mm wide and weighs about 0.27 kg.