Texas Instruments Evaluation Module for TPS65252, 4.5V to 16V INPUT with 2 BUCK CONVERTER and 1x USB switch TPS65252EVM TPS65252EVM Datenbogen
Produktcode
TPS65252EVM
www.ti.com
Bench Test Setup Conditions
5.2
Jumpers
Table 2. Jumpers
JUMPER
FUNCTION
PLACEMENT
COMMENT
NO.
For sequencing do not fit jumper.
JP15
BUCK1 enable (EN1)
Fit according to test requirement
To disable converter fit jumper to GND.
For sequencing do not fit jumper.
JP6
BUCK2 enable (EN2)
Fit according to test requirement
To disable converter fit jumper to GND.
Low power: Power save mode ON/OFF.
Fit according to test requirement.
JP20
LOW_P
If need low power mode test, should connect
During normal operation jumper must
V3V.
be fitted.
Pulls PGOOD signal to internal 3V3 rail or
JP24
PGOOD
Fit according to test requirement
grounds pin
Enables power switch when tied to 3v3.
JP25
USB_EN
Fit according to test requirement
Disables power switch when tied to GND.
When fitted connects USB switch alarm to
JP26
USB_nILIM
Fit according to test requirement
internal 3V3 rail
5.3
Test Points and Placement
Buck converter outputs are white and have a label for easy 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
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
.
Table 3. Test Points and Placement
TEST
NAME
SIGNAL
COLOR
COMMENT
POINT
TP1, TPS, TP3,
GND
Ground
Black
TP4, TP5
TP8
VIN
Input supply
White
TP9, TP9A
VOUT1
Buck1 output
White
TP9B
Input for gain-phase measurement Buck1
White
Normally not used
TP11, TP11A
VOUT2
Buck2 output
White
TP11B
Input for gain-phase measurement Buck2
White
Normally not used
TP20
LowP
Low Power input
White
TP23
rUSB
USB switch current set pin
White
Power Good
TP24
PGOOD
White
(open drain connected to Buck1 output)
TP25
USB_EN
Enable pin for USB swtich
White
TP26
USB_nILIM
USB switch alarm pin
White
TP27
USB_VIN
USB switch input
White
TP28
USB_Vo
USB switch output
White
11
SLVU438 – January 2011
List of Tables
© 2011, Texas Instruments Incorporated