Xilinx ZC706 User Manual page 81

associated TI Fusion Digital Power Designer GUI (downloadable from the TI site
This is the simplest and most convenient way to monitor the voltage and current values for
the power rails listed in
In the table, the Power Good (PG) On Threshold is the setpoint at or above which the
particular rail is deemed "good". The PG Off Threshold is the setpoint at or below which the
particular rail is no longer deemed "good". The controller internally OR's these per rail PG
conditions together and drives an output PG pin high only if all active rail PG states are
"good". The On and Off Delay and parameters are relative to when the board power on-off
slide switch SW12 is turned on and off.
Table 1-37 Power Rail Specifications for UCD90120A PMBus controller at Address 101
defines the voltage and current values for each power rail controlled by the UCD90120A
U48.
In Table
IMPORTANT:
thresholds that cause the regulator to shut down if the value is exceeded.
Table 1-37: Power Rail Specifications for UCD90120A PMBus Controller at Address 101
Device Address
101d
UCD90120A
U48
Notes:
1. The values defined in these columns are the voltage and current thresholds that cause the regulator to shut down if the value
is exceeded.
2. See Table 1-39 for rail turn on dependency details.
The ZC706 power system rail turn on timing is not strictly controlled through the Turn On
Delay shown in
preceding rail has reached 90% of its nominal voltage. See
dependency details.
ZC706 Evaluation Board User Guide
UG954 (v1.5) September 10, 2015
Table 1-37.
1-37, the values defined in the Shutdown columns are the voltage and current
Nominal
Rail
Voltage
1 VCCINT 1.000
2 VCCAUX 1.800
3 VCC1V5_PL 1.500
4 VADJ_FPGA 2.500
5 VCC3V3_FPGA 3.300
Table 1-37. The Table 1-37
www.xilinx.com
Turn
Power Power
On
Good Good
Delay
On Off
(2)
(ms)
0.900 0.850 0.0
1.620 1.530 5.0
1.350 1.275 5.0
2.250 2.125
5.0
2.970 2.805 5.0
Turn On Delay delay values are applied after the
Table 1-38
Feature Descriptions
[Ref 28].
(1)
Turn Shutdown
Off
Over Over
Delay
Voltage Current
(ms)
25.0 1.150 11.50
20.0 2.070 6.91
10.0 1.725 3.50
2.875 3.50
5.0
15.0 3.795 6.91
for rail turn on
81
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