Datasheet

Evaluation Board User Guide UG-320

Rev. A | Page 11 of 48

8. The original register configuration is stored in the

ADP1046_I2SF_B_xxxx.46r register file. (Note that all

loaded using the second icon from the left in Figure 10.

The IC on the board is preprogrammed, and this step is

optional.

9. Connect a dc power source (385 V dc nominal, current

limit to ~1 A) and an electronic load set to 1 A at the output.

10. Connect a voltmeter at the TP37 and TP38 test points.

Ensure that the differential probes are used and that the

ground of the probes are isolated if oscilloscope

measurements are made on the primary side of the

transformer.

11. Turn the PSON switch (SW1 on schematic; see Figure 76)

to the on position. Then click the dashboard settings icon

icon from the left in Figure 8), and turn on the

software via PSON.

The board should now be operational and ready for

evaluation. The output should read 12 V dc.

12. Click the Monitor tab and then the Flags and Readings

button (not shown) to load the entire state of the power

supply unit (PSU) in a single user-friendly window (see

Figure 11).

13. After successful startup and the board is in a steady state

condition, LEDs on the board provide the status of the board.

All the LEDs turn on, indicating that there are no faults

detected, such as overvoltage or overcurrent. In case of a

fault, the PGOOD1 or PGOOD2 LED turns off, indicating

that a flag has tripped due to an out of bounds condition.

The Flags and Readings window displays the appropriate

state of the PSU.

Table 4. List of LEDs on the Evaluation Board

LED

Description

D23 (Red)

PGOOD1 signal (active low)

D24 (Red)

PGOOD2 signal (active low)

D15 (Red) Indicates OrFET is turned on

D12 (White)

12 V from auxiliary boost

BOARD SETTINGS

The board settings can be accessed from the main setup

window (see Figure 9).

10180-008

Figure 10. Different Icons on Dashboard for Loading and Saving .46r and .46b Files