Power Connectors - Xilinx Virtex-4 ML461 User Manual

Chapter 3: Hardware Description
Figure 3-9
TRACK
VMARGIN_DN_xxxx_N
VMARGIN_UP_xxxx_N
5V
The TI PTH05010 regulator module requires a fixed 5V input. The output is adjustable over
a range of 0.9V to 3.6V by changing the resistor tied between pin 4 and GND.

Power Connectors

The Virtex-4 ML461 Development Board is powered through the +5V input power jack (J9)
from the power supply included in the ML461 Tool Kit. Alternatively, the +5V can also be
supplied from a bench power supply using the two banana jacks: J8 (RED) for +5V and J7
(BLACK) for GND.
The Rev B1 assembly of the Virtex-4 ML461 Development Board does not support the +12V
input via jack J5 or via banana jacks J4 and J1 because the power module for the 12V – 5V
functionality is not populated.
32
shows a typical schematic for voltage regulator control.
10
1
MRGN
GND
2
V
IN
INHIBIT V
3
+
C
IN
470μF
Figure 3-9: Typical Voltage Regulator Configuration
www.xilinx.com
9 8
MRGN TRACK
UP DN
PTH05010
Voltage Regulator
V
O_ADJ O_SENSE
4 5
Inhibit
R
SET
Jumper
Virtex-4 ML461 Development Board User Guide
GND
7
V
OUT
6
C
+
OUT
330μF
(optional)
ug079_09_072905
UG079 (v1.1) September 5, 2007
R