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2024年3月25日发(作者：何依秋)

The VC707 board uses power regulators and PMBus compliant digital PWM system controllers

from Texas Instruments to supply the core and auxiliary voltages listed in Table1-29.

Table 1-29:Onboard Power System Devices

Reference

Designator

Description

Power Rail

Net Name

Power Rail

Voltage

Schematic

Page

Device Type

Core voltage controller and regulators

UCD9248PFC

(1)

PTD08A020W

PTD08D210W

OUT

PTD08D210W

OUT

PTD08A010W

U42

U25

PMBus Controller (Addr=52)

Adjustable switching regulator

20A, 0.6V to 3.6V

Adjustable switching regulator

dual 10A, 0.6Vto 3.6V

Adjustable switching regulator

dual 10A, 0.6Vto 3.6V

Adjustable switching regulator

10A, 0.6V to 3.6V

VCCINT_FPGA

VCCAUX

VCC3V3

VCC_ADJ

1.00V

1.80V

3.30V

0-3.30V

U20

U12

Auxiliary voltage controller and regulators

UCD9248PFC

(2)

PTD08D210W

OUT

PTD08D210W

OUT

PTD08D210W

OUT

PTD08D210W

OUT

U43

PMBus Controller

(Addr=53)

Adjustable switching regulator

dual 10A, 0.6Vto 3.6V

Adjustable switching regulator

dual 10A, 0.6Vto 3.6V

Adjustable switching regulator

dual 10A, 0.6Vto 3.6V

Adjustable switching regulator

dual 10A, 0.6Vto 3.6V

VCC2V5_FPGA

VCC1V5_FPGA

MGTAVCC

MGTAVTT

2.50V

1.50V

1.00V

1.20V

U21

U22

UCD9248PFC

(3)

PTD08D210W

OUT

PTD08D210W

OUT

PTD08D210W

OUT

PTD08D021W

OUT

Linear regulators

LMZ12002

TL1962ADC

ADP123

U64

PMBus Controller

(Addr=54)

Dual 10A 0.6V - 3.6V Adj. Switching RegulatorVCCAUX_IO

VCCBRAM

MGTVCCAUX

VCCBRAM

2.00V

1.00V

1.80V

1.00V

U62

Dual 10A 0.6V - 3.6V Adj. Switching Regulator

U63

Dual 10A 0.6V - 3.6V Adj. Switching Regulator

U71

U62

U17

U18

Fixed Linear Regulator 2A

Fixed Linear Regulator, 1.5A

Fixed Linear Regulator, 300mA

VCC5V0

VCC1V8

VCC_SPI

XADC_VCC

5.00V

1.80V

2.80V

1.80V

VC707 Evaluation Board

UG885 (v1.8) February 20, 2019

Feature Descriptions

Table 1-29:Onboard Power System Devices (Cont’d)

Reference

Designator

U33

Description

Tracking Regulator, 3A

Power Rail

Net Name

VTTDDR

Power Rail

Voltage

0.75V

Schematic

Page

Device Type

TPS51200DR

Notes:

Table1-30.

Table1-31.

Table1-34.

Data sheets for the Texas Instruments controller and regulators are available at the Texas

Instruments website [Ref25], and for the Analog Devices ADP123 at [Ref26].

FMC_VADJ Voltage Control

The FMC_VADJ rail is set to 1.8V. When the VC707 board is powered on, the state of the

FMC_VADJ_ON_B signal wired to header J51 is sampled by the TI UCD9248 controller U42. If a

jumper is installed on J51 signal FMC_VADJ_ON_B is held low, and the TI controller U42

energizes the FMC_VADJ rail at power on.

Because the rail turn on decision is made at power on time based on the presence of the J51 jumper,

removing the jumper at J51 after the board is powered up does not affect the 1.8V power delivered

to the FMC_VADJ rail and it remains on.

A jumper installed at J51 is the default setting.

If a jumper is not installed on J51, signal FMC_VADJ_ON_B is high, and the VC707 board does not

energize the FMC_VADJ 1.8V at power on. In this mode the user can control when to turn on

FMC_VADJ and to what voltage level (1.2V, 1.5V, 1.8V). With FMC_VADJ off, the FPGA still

configures and has access to the TI controller PMBUS along with the VADJ_ON_B signal. The

combination of these allows the user to develop code to command the FMC_VADJ rail to be set to

something other than the default setting of 1.8V. After the new FMC_VADJ voltage level has been

programmed into TI controller U42, the VADJ_ON_B signal can be driven low by the user logic and

the FMC_VADJ rail comes up at the new FMC_VADJ voltage level. Installing a jumper at J51 after

a VC707 board powers up in this mode turns on the FMC_VADJ rail.

Documentation describing PMBUS programming for the UCD9248 digital power controller is

available at the Texas Instruments website [Ref25].

Monitoring Voltage and Current

Voltage and current monitoring and control are available for selected power rails through Texas

Instruments' Fusion Digital Power graphical user interface. The three onboard TI power controllers

(U42 at address 52, U43 at address 53, and U64 at address 54) are wired to the same PMBus. The

PMBus connector, J5, 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

[Ref25], and the

associated TI Fusion Digital Power Designer GUI (downloadable from

[Ref25]). This is the

simplest and most convenient way to monitor the voltage and current values for the power rail listed

in Table1-30, Table1-31, and Table1-32.

In each of these the three tables (one per controller), the Power Good (PG) On Threshold is the

set-point at or above 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

OR's 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 SW12 is turned on and off.