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Test Setup and Results
4
SLUUC02 – February 2019
Copyright © 2019, Texas Instruments Incorporated
TPS65295EVM-079, 4.5-V to 18-V
IN
, complete DDR4 power solution
evaluation module
3.2
Input/Output Connections
The TPS65295EVM-079 is provided with input/output connectors and test points as shown in
and
Jumpers description shown in
. A power supply capable of supplying greater than 8A must be
connected to J1 through a pair of 20-AWG wires or better. The load must be connected to J2 through a
pair of 20-AWG wires or better. The maximum load current capability is 8 A. Wire lengths must be
minimized to reduce losses in the wires.
Table 3. Jumpers
#
FUNCTIONS
COMMENT
J1
Connects the PVIN_VPP and
VCC_5V
Need to jump if share the same
power for PVIN_VPP and
VCC_5V
J6
Connects the VLDOIN and VDDQ
Need to jump when no external
VLDOIN exists on J8
J8
External VLDOIN 1.2V Input for
VTT power input
It is for test, leave NA if not use
J10
VPP and VDDQ buck enable
SLP_S4# pin
J11
VTT enable
VTT_CNTL pin
Buck converter outputs are white and have a label for each location. Close to any of these test points
there are black ground test points to allow for DVM measurement or to use a metal exposed scope probe
to reduce common mode noise measurements. All test points are described in the following
.
Table 4. Connection and Test Points
TP#
NAME
SIGNAL
COLOR
TP1
VIN_5V
VCC_5V input or test point for PVIN_VPP
White
TP2
VIN_5V
VCC_5V input or test point for PVIN_VPP
Silver
TP3
VPP
Output voltage for VPP
White
TP4
VPP
Output voltage for VPP
Silver
TP5
GND
GND
Black
TP6
GND
GND
Black
TP7
PVIN
VDDQ Buck power input test point
White
TP8
VDDQ
Output voltage for VDDQ
White
TP9
PVIN
VDDQ Buck power input test point
Silver
TP10
VDDQ
Output voltage for VDDQ
Silver
TP11
GND
GND
Black
TP12
GND
GND
Silver
TP13
GND
GND
Black
TP14
GND
GND
Silver
TP15
VTT
Output voltage for VTT
White
TP16
VLDOIN
VLDOIN input or test point
White
TP17
GND
GND
Black
TP18
GND
GND
Black
TP19
VTTREF
Output voltage for VTTREF
White
TP20
GND
GND
Black
TP21
GND
GND
Black
TP22
PGOOD
Power good signal
White
TP23
SLP_S4#
VPP and VDDQ buck enable
White
TP24
VTT_CNTL
VTT enable
White