Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revision Previous revision
reference:programmable-logic:nexys-a7:reference-manual [2019/02/27 06:38]
Cristian Fatu [1 Power Supplies]
reference:programmable-logic:nexys-a7:reference-manual [2019/02/27 06:44] (current)
Cristian Fatu [1 Power Supplies]
Line 120: Line 120:
 //Figure 1.1 Nexys A7 Power Circuit// //Figure 1.1 Nexys A7 Power Circuit//
  
-The USB port can deliver enough power for the vast majority of designs. Our out-of-box demo draws ~400mA of current from the 5V input rail. A few demanding applications,​ including any that drive multiple peripheral boards, might require more power than the USB port can provide. Also, some applications may need to run without being connected to a PC’s USB port. In these instances, an external power supply or battery pack can be used. +The USB port can deliver enough power for the vast majority of designs. In order to power the board from USB port set jumper JP3 to “USB”. Our out-of-box demo draws ~400mA of current from the 5V input rail. A few demanding applications,​ including any that drive multiple peripheral boards, might require more power than the USB port can provide. Also, some applications may need to run without being connected to a PC’s USB port. In these instances, an external power supply or battery pack can be used. 
  
 An external power supply can be used by plugging into to the power jack (J13) and setting jumper JP3 to “WALL”. ​ The supply must use a coax, center-positive 2.1mm internal-diameter plug, and deliver 4.5VDC to 5.5VDC and at least 1A of current (i.e., at least 5W of power). Many suitable supplies can be purchased from Digilent, through Digi-Key, or other catalog vendors. An external power supply can be used by plugging into to the power jack (J13) and setting jumper JP3 to “WALL”. ​ The supply must use a coax, center-positive 2.1mm internal-diameter plug, and deliver 4.5VDC to 5.5VDC and at least 1A of current (i.e., at least 5W of power). Many suitable supplies can be purchased from Digilent, through Digi-Key, or other catalog vendors.