Monitoring Voltage And Current; Fpga Cooling Fan Circuit - Xilinx KC705 User Manual

X-Ref Target - Figure 1-36
Cooling
Fan
FPGA
U1 Pin L26

Monitoring Voltage and Current

Voltage and current monitoring and control are available for selected power rails through
the Texas Instruments Fusion Digital Power GUI. The three onboard TI power controllers
(U55 at address 52, U56 at address 53, and U89 at address 54) are wired to the same PMBus.
The PMBus connector, J39, is provided for use with the TI USB Interface Adapter PMBus pod
(TI part number EVM USB-TO-GPIO), which can be ordered from the TI website
the associated TI Fusion Digital Power Designer GUI (downloadable from
the simplest and most convenient way to monitor the voltage and current values for the
power rail listed in
In each of these the three tables (one per controller), the Power Good (PG) On Threshold is
the set-point at or below which the particular rail is deemed "good". The PG Off Threshold
is the set-point at or below which the particular rail is no longer deemed "good". The
controller internally ORs these 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 rise and fall times are
relative to when the board power on-off slide switch SW15 is turned on and off.
KC705 Evaluation Board
UG810 (v1.8) March 20, 2018
R392
10.0K 1%
J61
1/10W
3
Fan Tach
2
Fan +12V
1
Fan GND
VCC2V5
R391
1.00K 1%
1/16W
SM_FAN_PWM 1
Figure 1-36: FPGA Cooling Fan Circuit
Table 1-31, Table 1-32
www.xilinx.com
Chapter 1: KC705 Evaluation Board Features
VCC12_P
R393
10.0K 1%
1/10W
R390
D14 4.75K 1%
100V 1/10W
500 mW
DL4148
2 4
Q17
NDT30555L
1.3 W
3
GND
and Table 1-33.
SM_FAN_TACH
FPGA
U1 Pin U22
D15
2.7V
500 mW
MM3Z2V7B
GND
UG810_c1_36_031214
[Ref 23], and
[Ref 24]). This is
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