KCU1250 User Guide
12
UG1057 (v1.0) December 19, 2014
Chapter 1:
KCU1250 Board Features and Operation
The KCU1250 board uses power regulators and PMBus compliant digital PWM system
controllers from Maxim Integrated to supply the FPGA logic and utilities voltages listed in
. The board can also be configured to use an external bench power supply for each
Table 1-2:
Onboard Power System Devices
Device Part
Number
Reference
Designator
Description
Power Rail
Net Name
Voltage
FPGA Logic
Maxim
MAX15301
U23
InTune Digital Point of Load (PoL) Controller, 36A
V
CCINT
0.95V
Maxim
MAX15301
U24
InTune Digital Point of Load (PoL) Controller, 8A
V
CCAUX
1.8V
Maxim
MAX15301
U26
InTune Digital Point of Load (PoL) Controller, 4A
V
CCBRAM
0.95V
Maxim
MAX15301
U27
InTune Digital Point of Load (PoL) Controller, 7A
V
CCO_HP
1.8V
Maxim
MAX15301
U28
InTune Digital Point of Load (PoL) Controller, 4A
V
CCO_HR
1.8V
Utility
Maxim
MAX15301
U31
InTune Digital Point of Load (PoL) Controller, 10A
UTIL_5V0
5.0V
Maxim
MAX15301
U30
InTune Digital Point of Load (PoL) Controller, 10A
UTIL_3V3
3.3V
Maxim
MAX15301
U29
InTune Digital Point of Load (PoL) Controller, 3A
UTIL_2V5
2.5V
MGT Transceivers (monitoring only)
INA226
U50
Current shunt and power monitor with I2C
interface
MGTAVCC
1.0V
INA226
U51
Current shunt and power monitor with I2C
interface
MGTAVTT
1.2V
INA226
U52
Current shunt and power monitor with I2C
interface
MGTVCCAUX
1.8V
System Controller
Maxim
MAX15053
U13
Fixed LDO regulator
SYS_1V0
1.0V
Maxim
MAX15027
U33
Fixed LDO regulator
VCC_1V2
1.2V
Maxim
MAX15027
U25
Fixed LDO regulator
VCC_1V8
1.8V
Notes:
1. The output voltages of the Max15301 can be reprogrammed using the Maxim InTune Digital Power Tool
However, extreme caution must be taken when attempting to modify any of the onboard regulators. An incorrectly
programmed regulator can damage onboard components.