In modern industrial automation and intelligent manufacturing, DIN rail power supplies are indispensable “core power” within control cabinets, providing stable and reliable power to critical equipment such as PLCs, sensors, and actuators. MEAN WELL, a global manufacturer of standard power supplies, has long been trusted by engineers and system integrators for its superior quality and comprehensive product line.
Now, MEAN WELL’s newly launched XDR-E series offers high-performance, high-reliability, and high-density economical DIN rail power supplies. With a slimmer profile, higher power density, and strong paralleling capabilities, it provides unprecedented flexibility and cost advantages for system integration, becoming the best power solution for next-generation control systems.
The XDR-E series boasts the following advantages:
- Ultra-thin design and ultra-high power density: Volume reduced by 23%~45% (depending on model).
- Multi-country and multi-industry international certifications: Complete certifications, allowing global sales.
- Superior efficiency: Up to 96% efficiency
The innovative parallel connection function is a core highlight of the XDR-E series. Many budget power supplies do not support parallel connection, requiring higher-priced, higher-end power supplies to utilize this feature. The XDR-E series (480W, 960W) incorporates a drooping current sharing circuit, making parallel applications simpler, safer, and more efficient. The multi-unit parallel connection function allows for flexible power expansion to meet higher power demands.
The XDR-E series supports up to 4 units in parallel, with a maximum power of 3840W (based on the XDR-960E). Compared to older parallel wiring methods, the XDR-E series greatly simplifies wiring; simply shorting the PLINK on the front panel enables the parallel connection function. For more information on parallel connection considerations, please refer to the XDR-E series datasheet for more detailed information.
The following is a brief explanation of the droop current sharing function:
The XDR-E series (480W and above) has a built-in droop current sharing function, which is a control technology that automatically adjusts the output impedance to proportionally distribute the load current when multiple power modules are connected in parallel. Its core principle is to actively adjust the power supply’s output voltage, causing it to decrease slightly as the output current increases, thus achieving automatic load balancing among the parallel units.
The XDR-E series uses an internal current detection circuit to monitor its own output current in real time. When the parallel function is enabled, the XDR-E series converts the output current signal into a voltage signal to adjust the reference voltage, changing the power supply’s output characteristics. When the output current increases, the output voltage decreases accordingly.
For example, when two XDR-E units are connected in parallel, if the output voltage of one power supply A decreases, the load will be more borne by the other power supply B, which has a higher output voltage. Due to the droop current sharing characteristic, the output voltage of power supply B will also decrease, thus reducing the load it bears. Through this dynamic balancing adjustment, the effect of current equalization is ultimately achieved.
The XDR-E series adopts a drooping current equalization parallel connection method, which has a simple architecture, requires no additional parallel connection cables, has lower costs in actual installation, and is easier to expand.
About Gainer LED:
Gainer LED was established in 2012. The company focuses on providing advanced technology solutions for medium and high power general lighting, special lighting and high-end display fields. Its products are widely used in commercial lighting, industrial lighting, smart buildings and professional display screens. Relying on a global marketing network and professional technical service system, Gainer LED continues to provide global customers with high-performance lighting products that meet international standards and fully meet the diverse needs of the market.
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