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Power supplies are a crucial part of any electrical system, and it’s important to choose the right power supply for your needs. In this article, we’ll examine the benefits of configurable power supplies such as the MEAN WELL NMP and UMP-400 Series.
Configurable Power Supplies
Standard power supplies with a fixed output are low cost and widely available, but they’re not always the best solution. These power supplies compel designers to adapt their system to pre-determined power specifications.
- Supplies
- Low Leakage Current
- EMC Performance
- High Power Density
Functions of Configurable Power Supplies test
The MEAN WELL NMP series includes additional functions to improve the flexibility of the supplies. An active power factor correction (PFC) function improves conversion efficiency and protects the device. Active current sharing and parallel control capabilities allow users to increase the total output current by connecting up to four (NMP650) or six (NMP1K2) modules of the same output voltage rating (meaning the difference in voltage should be less than 0.2V).
Higher output voltages can be achieved by connecting output modules in series (where the total output current should not exceed the current rating of the lowest rated module connected in series).
The output voltage of the modules can be adjusted via the step voltage regulator (SVR), which is trimmed by turning the VR60 potentiometer near the output terminals. Turning the VR60 clockwise increases the voltage, and turning it counter-clockwise reduces the voltage. The output voltage is programmable in the range of 3 – 6V (NMS-240-05), 6 – 15V (NMS-240-05), 15 – 30V (NMS-240-24), and 30 – 55V (NMS-240-48). Additionally, the voltage and current can be trimmed to 40 – 100 percent of the rated values by applying external DC voltages.