Data Sheet

ManualsBrandsDigilent ManualsFPGANexys Video Artix-7 FPGA Training Board

Nexys Video™ FPGA Board Reference Manual

Other product and company names mentioned may be trademarks of their respective owners.

Page 5 of 29

Regulatory Warning

Warning: This is a class A product. In a domestic environment this product may cause radio interference, in which

case the user may be required to take adequate measures.

1 Power Supplies

The Nexys Video board can receive power from an external power supply through the center-positive barrel jack

(J21) or the two-pin battery header (J22). The external supply voltage must be 12 V ±5 %. The Nexys Video cannot

be powered from the USB bus.

All Nexys Video power supplies can be turned on and off by a single logic-level power switch (SW8). Enables of

power supplies not connected directly to the power switch are disabled indirectly. A power-good LED (LD16),

driven by the "power good" output of the on-board regulators, indicates that the supplies are turned on and

operating normally. An overview of the Nexys Video power circuit is shown in Figure 1.

Power Jack (J21)

IC26: ADP5052

Power

Switch

(SW8)

Power On

LED (LD16)

PGOOD

PVIN1-4

J22

IC28: ADP2384

PVIN

IC30: ADP2370

VADJ

5.0V

PVIN5

3.3V

1.0V

1.8V

1.2A

1.5V

1.2A

0.2A

2.5V

PGOOD

0.8A

VIN

VADJ_EN

SET_VADJ

VIN

0.3A

IC31,33,34: ADP123

1.0V MGT

1.2V MGT

1.8V XADC

IC6: ADP150

VIN 0.15A

3.3V Audio

VIN REF

1.25V XADC

IC32: ADR127

Figure 1. Nexys Video power circuit.

An external power supply can be used by plugging it into the power jack (J21). The supply must use a coax, center-

positive 2.1mm internal-diameter plug, and deliver 12VDC ±5 %. The minimum current rating of the supply

depends on the actual design implemented in the FPGA, but at least 3A of current (i.e., at least 36W of power) is

recommended.

Instead of a wall supply, an external battery pack can be used by connecting the battery's positive terminal to the

positive pin of J22 and the negative terminal to the negative pin. Incorrect polarity might cause permanent damage

to the board. To power the Nexys Video and any peripheral other than an FMC mezzanine card using the 12P0V

supply, the battery voltage must be in the 6-15 V range. Since the external power supply pin is wired directly to the