User manual

Setup

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3. Connect the ribbon cable between the EVM and the USB-TO-GPIO (HPA172) adapter.

4. Connect the USB cable between the computer and USB-TO-GPIO adapter.

5. Connect the input voltages to the EVM.

6. Run the TPS6025xEVM software.

Table 1. Factory EVM Jumper Settings

Jumper Shunt Location

JP1 Installed

JP2 Installed

JP3 Installed

JP4 Installed

JP5 Installed

JP6 Installed

JP7 Installed

JP8 Between ON and EN

2.3.1 TPS6025x Software Operation

The software is designed to work with the TPS60250/1/2 family of devices. A screenshot of the software is

shown in Figure 1. Upon being opened, the software asks the user to select which particular EVM is

installed.

The top part of the software contains a link to the device data sheet as well as buttons to read and write

all the registers.

The bottom part of the software indicates that the USB-to-GPIO adaptor is installed and working properly.

It also notes the I

C bus speed (100 kHz) and that the R

resistor value is 562 kΩ. This value can be

changed by the user but will not be updated in the GUI.

2.3.1.1 Left Half of Software GUI - Settings

This portion of the software allows the user to enable/disable the different banks of LEDs using simple

check boxes. Open lamp detection may be enabled/disabled using the provided check box. Refer to the

TPS60251 data sheet for a description of the open lamp detection. Additionally, a pulldown box (MODE) is

available to control the aux display settings. The aux display may be grouped with main display or set for

the separate high-current (80 mA) aux display. When using the high-current setting, it is suggested that

separate LEDs are connected between the J5 (cathode connection) and J6 (anode connection)

connectors. The LEDs installed on the EVM are rated for 30-mA dc current and may be damaged at the

higher current. Selecting the shutdown option in the Aux Display pulldown menu disables all of the LEDs

and places the IC in a low-power shutdown mode. The internal registers are not changed in this mode.

Another MODE pulldown box allows selection of what switching mode is used to drive the WLEDs: auto

switch, forced 1x, or forced 1.5x. Finally, there are 3 pulldown boxes at the bottom to set the WLED

current for each of the banks.

2.3.1.2 Right Half of the GUI - Register Map

This portion of the software allows the user to change the registers on a bit level. All this functionality is

already included in the easy to use boxes and pulldowns on the left half side of the GUI.

TPS60251EVM-192 SLVU209B–April 2007–Revised December 2012

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