3,200-W three-phase input industrial power supply series extended with 48-V model

The TPS3000-48, a 3,200-W 48-V model, is a new model in the TPS power supply series. The 2U high product delivers 3,200-W output power (44 V at 133.3 A) and operates from a wide-range Delta or Wye 350- to 528-Vac three-phase input. The 48-V model suits test and measurement equipment, semiconductor fabrication, industrial printers, and lasers. The high-voltage, three-phase input avoids the requirement for step-down transformers and assists phase-load current balancing.

The TPS3000-48 features isolated AC Fail, DC Good and dropped phase signals, remote on/off, remote sense, and a 12-V/0.3-A standby supply. A PMBus communications interface allows remote monitoring of the output voltage, output current, internal temperature, status signals, and fan speed. Additionally, the output voltage, overcurrent limit, and remote on/off can be programmed by the PMBus. The output voltage can also be adjusted from 38.4 to 56.5 V and the current limit point by 70% to 105% using front-panel potentiometers or an analog 0- to 5-Vdc voltage. Up to eight units can be connected in parallel for higher power, and internal ORing FETs allow redundant operation.

The 92.5% efficient unit can operate at full load in ambient temperatures of up to 50^° C, and deliver up to 55% load at 70^° C. The power supply has 3-kVac input-to-output, 2-kVac input-to-ground, and 500-Vac output-to-ground isolation.