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13.1 Graphical User Interface (GUI)
As previously mentioned, there are two types of GUI: Device GUI and Designer GUI. The Device GUI is
categorized as low-level GUI. From the Device GUI, device registers are accessed if the device is in ROM
mode and the PMBus communication is established. This GUI is used to download the code when the
device is blank during the initial programming. Also, at the flash mode, a designer can send PMBus
commands to read or write the data. The Designer GUI is an interface between a host and a user. It
supports some of the PMBus commands to configure, monitor, and design the loop compensator
contained in the UCD3138 digital controller.
13.1.1
Hardware Setup
In
Section
5.2,
Figure 5
the EVM with GUI, the control card must first connect to a GPIO-to-USB adapter card, HPA172, then to a
host computer. The following lists the steps for an evaluation:
1. Connect the input voltage source to the input connectors shown in
equivalent.
2. Connect the output load to the board. Use a 14-AWG wire or equivalent.
3. Plug the control card UCD3138CC64EVM-030 (PWR030) into UCD3138PSFBEVM-027 with the
orientation in
Figure 5
4. Confirm that the control card does not have a jumper on J2, and install a jumper on J6.
5. Connect the USB-to-GPIO (HPA172) adaptor to the control card as shown in
the other end of USB-to-GPIO adapter to the host computer
6. Move the ON/OFF control switch, S1, on the phase-shifted full-bridge board, to the OFF position. See
Figure 5
to locate S1 on the phase-shifted full-bridge board.
7. Configure the load to draw 1 A.
8. Apply 380 V to the input with a 2-A current limit set on the input source.
SLUUAK4 – August 2013
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Figure 41. Test Setup
and
Figure 6
show a basic setup for a power stage test with the EVM. To evaluate
and
Figure
6.
Copyright © 2013, Texas Instruments Incorporated
Evaluating the EVM with GUI
Figure
5. Use 14 AWG wire or
Figure
41, and connect
Using the UCD3138PSFBEVM-027
45
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