The KCU1500 hosts a Maxim PMBus based power system. Each individual Maxim MAX15301 and MAX20751 voltage regulator has a PMBus interface. This Figure shows the KCU1500 power system block diagram.
Figure 3-9: Power System Block Diagram
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X-Ref Target - Figure 3-9
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The KCU1500 board uses power regulators and PMBus compliant point of load (POL) controllers from Maxim Integrated Circuits to supply the core and auxiliary voltages listed in Table: Onboard Power System Devices.
Table 3-5: Onboard Power System Devices
|
Rail Name
|
Power System Regulators
|
U18 Current Sense SYSMON Multiplexer Port
|
Schematic Page Number
|
|
Ref. Des.
|
Device Type
|
Vout (V)
|
Max. I (A)
|
Addr.
|
Bin. Addr.
|
Port
|
|
VCCINT_FPGA
|
U20
|
MAX15301
|
0.95
|
30
|
0x0A
|
NA
|
NA
|
22
|
|
VCC1V8_FPGA
|
U21
|
MAX15301
|
1.80
|
10
|
0x14
|
001
|
S2
|
23
|
|
VCC1V2_FPGA
|
U25
|
MAX15301
|
1.20
|
10
|
0x12
|
100
|
S5
|
24
|
|
MGTAVCC_FPGA
|
U28
|
MAX20751
|
0.95
|
30
|
0x72
|
NA
|
NA
|
25
|
|
MGTAVTT_FPGA
|
U37
|
MAX20751
|
1.20
|
30
|
0x73
|
111
|
S8
|
27
|
|
Non-PMBus Regulators
|
|
SYS_5V0
|
U34
|
MAX17502
|
5.00
|
1
|
NA
|
NA
|
NA
|
26
|
|
SYS_2V5
|
U27
|
MAX15027
|
2.50
|
1
|
NA
|
NA
|
NA
|
26
|
|
MGTVCCAUX
|
U30
|
MAX8869E
|
1.81
|
1
|
NA
|
NA
|
NA
|
26
|
|
DDR4_C0_VTT
|
U117
|
TPS51200
|
0.60
|
3
|
NA
|
NA
|
NA
|
26
|
|
DDR4_C1_VTT
|
U32
|
TPS51200
|
0.60
|
3
|
NA
|
NA
|
NA
|
26
|
|
DDR4_C2_VTT
|
U118
|
TPS51200
|
0.60
|
3
|
NA
|
NA
|
NA
|
26
|
|
DDR4_C3_VTT
|
U35
|
TPS51200
|
0.60
|
3
|
NA
|
NA
|
NA
|
26
|
Documentation describing PMBus programming for the Maxim InTune™ power controllers is available at the Maxim website [Ref 16]. The PCB layout and power system design meet the recommended criteria described in the UltraScale Architecture PCB Design User Guide (UG583) [Ref 4].
