Vadj Voltage Control - Xilinx ZC702 User Manual

Table 1-30: Onboard Power System Devices
Reference
Device Type
Designator
Core voltage controller and regulators
UCD9248PFC
PTD08D210W—VoutA
—
PTD08D210W VoutB
—
PTD08D210W VoutA
—
PTD08D210W VoutB
Auxiliary voltage controller and regulators
UCD9248PFC
—
PTD08D210W VoutA
—
PTD08D210W VoutB
—
PTD08D210W VoutA
—
PTD08D210W VoutB
UCD9248PFC
—
PTD08D210W VoutA
—
PTD08D210W VoutB
Linear regulator
TPS51200DR

VADJ Voltage Control

The VADJ rail is set to 2.5V. When the ZC702 board is powered on, the state of the
FMC_VADJ_ON_B signal wired to header J12 is sampled by the TI UCD9248 controller U33.
If a jumper is installed on J12 signal FMC_VADJ_ON_B is held low, and the TI controller U33
energizes the VADJ rail at power on.
Because the rail turn on decision is made at power on time based on the presence of the J12
jumper, removing the jumper at J12 after the board is powered up does not affect the 2.5V
power delivered to the VADJ rail and it remains on.
ZC702 Board User Guide
UG850 (v1.2) April 4, 2013
Description
–
U32 PMBus Controller Core (Addr = 52)
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator
U17
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator
U18
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator
–
U33 PMBus Controller Aux (Addr = 53)
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator (set to 1.8V, 2.5V or 3.3V)
U19
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator
U20
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator
–
U34 PMBus Controller Aux (Addr = 53)
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator
U21
–
Dual 10A 0.6V 3.6V Adj. Switching
Regulator
U22 3A Tracking Regulator
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Feature Descriptions
Power Rail Power Rail
Net Name Voltage
VCCINT 1.00V
VCCPINT 1.00V
VCCAUX 1.80V
VCCPAUX 1.80V
VADJ 2.50V
VCC1V5 1.50V
VCCMIO_PS 1.80V
VCCBRAM 1.00V
VCC3V3 3.30V
VCC2V5/
2.50V
VCC2V5_PL
VTTDDR_PS 0.75V
Schematic
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