The example below shows a TPS389004-Q1 monitoring four voltage supply rails on the TPS389006Q1EVM. Please follow the steps in Section 4.1.1 and Section 4.1.2 before evaluating the TPS389004-Q1. In this example, the TPS389006Q1EVM is set up to monitor several power supply rails after the ACT pin is asserted. Below, Figure 4-16 shows how the TPS389006Q1EVM was setup to monitor four voltage supply rails.

1. Connect the TPS389006Q1EVM VDD and VAUX inputs to a 3.3V external power supply. Note that the voltage and current limits of the power supply must be set at 3.3V and 10mA.
2. Connect the TPS389006Q1EVM with TI's USB2GPIO USB Interface Adapter ribbon to J18 (USB2GPIO connector). Connect the USB plug from the USB Interface Adapter to the USB port of the computer. The TI USB Interface Adapter communicates to the TPS389004-Q1 IC via I²C protocols.
3. Verify that the jumper settings, highlighted in red in Figure 4-16, are set on the TPS389006Q1EVM.
4. Ground turret (MON7/RS_1/2).
5. Apply 0.8V to MON1, 1.0V to MON2, 1.8V to MON3, 3.3V to MON4 to the turrets of TPS389006Q1EVM.
6. Final Connections must look similar to Figure 4-16.
7. Open up the Fusion Digital Power Designer GUI on the computer and follow Section 4.2.
8. Once the EVM is discovered and Click to Configure has been selected, the GUI is similar to Figure 4-13, Figure 4-14, Figure 4-15.
9. Scroll to the bottom of the Interrupt Enable sub-window and enable all four monitoring inputs by clicking the empty boxes. The GUI image, Figure 4-17 below, shows all the monitoring inputs being selected in the highlighted black-box.
10. In the Voltage Range and Threshold sub-window, enter the undervoltage (UV) and overvoltage (OV) threshold values for the monitoring inputs. One thing to note, any monitoring inputs that are higher than 1.5V needs to select 4x in the Voltage Scaling (1Fh) field. The GUI image below, highlighted by a yellow-box, shows is described above.
11. Once steps 9 and 10 are completed, press Write to Hardware and the USB Interface Adapter communicates to the TPS389004-Q1 IC. Next, press Start Polling and both the Telemetry (shown in the highlighted orange-box) and the graphical waveform of the monitored inputs (shown in the highlighted red-box) is shown in the GUI.
12. If one of the monitored inputs senses a fault, then an interrupt indicator is displayed (illumination of a red LED) on the TPS389006Q1EVM. Also, one of the bit registers found in the Status Registers sub-window, highlighted in the green-box, also shows a fault in red color.
13. To clear the fault interrupt, press Stop Polling, go to the Status Registers sub-window, locate the red color fault interrupt and click on CLR. Then click on Write to Hardware. This procedure clears the fault interrupt and allows the device to continue to monitor the input channels.
14. Steps 8 through 13 refers to Figure 4-17 below.