Connecting Constant Voltage LED Drivers in Parallel

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Aimtec’s LED drivers are offered in a wide range of Output Power and Output Voltages. This gives the opportunity to use them in a “stand-alone” configuration or connected in parallel.

Why connect in parallel:
 
Some of the applications for connecting Constant Voltage LED Drivers in parallel include:
  • To increase the Output Power by connecting 2 or more converters in parallel.
  • To provide redundancy and to ensure that the system remains functional should a single LED driver fail.
  • Higher power requirements can be achieved by using lower power LED drivers in parallel
How to connect in parallel:
 
Ideally, the modules should be connected in parallel as shown in Figure 1. In the parallel configuration illustrated, the total output power is shared by the drivers.
 
Figure 1: 4 AMER150-50300AZ LED Drivers in Parallel configuration, with 20A Diode for circuit protection. Example shown, 50V Constant Voltage LED Drivers in Parallel produce 12A Current, total power 600W.

 

Important considerations:
  • All LED drivers must be in constant voltage mode
  • All LED drivers must be of the same model, mixed models will created imbalanced results and are not supported
  • Diode selection should be at least 3 times the current of the driver output, with heat sink applied
  • As in Constant Voltage mode normally, Dimming function is not supported, customers should order units with the “-F” suffix, without dimming
 
Notes: Information furnished is believed to be accurate and reliable. However, Aimtec assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Aimtec. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. Aimtec products are not authorized for use as critical components in life support devices or systems without express written approval of Aimtec.  © 2012 Aimtec – All Rights Reserved