Texas Instruments PWR054-001, User Manual

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Setup
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2.1.24 J24 – DCDC_C Load Step Signal Input
This SMA connector accepts a signal input from a function generator that drives Q3 in order to evaluate
DCDC_C's transient response. This connector is not normally installed. TP13 can be used instead to
apply the signal.
2.1.25 J25 – DVS I
2
C Connection from USB-TO-GPIO Adaptor
This connects the USB-TO-GPIO adaptor to the DVS I
2
C connection of the TPS650380. It provides the I
2
C
signals and a 3.3 V supply for powering V
DD
. This connector is keyed to prevent incorrect installation. Only
install a USB-TO-GPIO adaptor in either J19 or J25 at the same time.
2.1.26 JP1 – EN
This jumper sets the EN pin to either a logic high (ON, jumper across pins 1 and 2) or a logic low (OFF,
jumper across pins 2 and 3). When EN is low, the TPS650380 output will be off and not switching. Set EN
to ON to turn on the output voltage.
2.1.27 JP2 – V
DD
Control
This jumper is used to connect V
DD
to a 3.3V rail provided by the USB-TO-GPIO adaptor when the jumper
is installed. Alternatively, the user can provide their own V
DD
voltage (1.2 - 3.6V) between J13 and J14.
The JP2 jumper should not be installed in this case. For normal operation without an external supply
voltage, the jumper should be installed.
2.2 Software Setup
The software is available at the TI website,
http://focus.ti.com/docs/toolsw/folders/print/TPS650380EVM-054.html .
Download and unzip the file. Run setup.exe and follow the on screen instructions to complete the
installation.
NOTE: This installation page is best viewed with Microsoft Internet Explorer browser (it may not
work correctly with other browsers)
The Microsoft .Net Framework 2.0 is required for the software to run.
After installation, the software should automatically run. To run the software later, go to
Start → All Programs → Texas Instruments → TPS65038x EVM → TPS65038x EVM.
During future use of the software, it may prompt you to install a new version if one becomes available on
the Web.
NOTE: VeriSign™ Code Signing is used to prevent any malicious code from changing this
application. If at any time in the future the binaries are modified, the code will no longer
attempt to run.
2.3 Hardware Setup
Table 2 shows the board default jumper settings.
Table 2. Default Jumper Settings
JUMPER DEFAULT
JP1 Installed across pins 1 and 2
JP2 Installed across pins 1 and 2
6 TPS650380EVM-054 SLVU720A – June 2012 – Revised November 2012
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