to the DAC configuration page on the GUI, click the
Configuration
icon
.
shows the DAC
configuration page.
Figure 5-10. TMAG5328 GUI DAC Configuration Page
•
Modification Method Drop-Down Box
: This drop-down box selects which method is used for setting the
DAC voltage after you click the
CHANGE VALUE
button. There are four modification methods offered in this
drop-down box:
–
Voltage sweep Drop-Down Box Option
: This method sweeps the DAC output voltage to find the sensed
magnetic flux density and then sets the B
OP
to this sensed magnetic flux density. It takes 20 seconds to
complete the voltage sweep operation. During this time, the buttons on this page are disabled and the
textbox says "Sweep started. Next update in 20 seconds". After 20 seconds has passed and the buttons
on this page have been enabled again, the status text box will say one of the following:
•
If the operation is successful:
"BOP updated to" followed by the sensed magnetic flux density value
•
If the operation was successful but the sensed magnetic flux density was greater than the
maximum 15-mT B
OP
supported by the device
: "Magnetic Flux Density > 15 mT device maximum
Bop."
•
If the operation was successful but the sensed magnetic flux density was less than the
minimum 2-mT B
OP
supported by the device
: "Magnetic Flux Density < 2 mT device minimum
Bop."
•
If the operation was not successful
: "Sweep started. Next update in 20 seconds"
–
Manual B Drop-Down Box Option:
This allows the user to enter a magnetic flux density into the
"Implemented Magnetic Flux Density (BOP)
"
textbox. When you click the
CHANGE VALUE
button, the
DAC is configured to output the voltage needed to generate the B
OP
that was input into the "Implemented
Magnetic Flux Density (BOP)
"
textbox.
–
Manual V Drop-Down Box Option:
This allows the user to enter a DAC output voltage into the "Voltage
Applied to TMAG5328 ADJ Pin
"
textbox. When you click the
CHANGE VALUE
button, the DAC's output
voltage is set to the output voltage that was entered into the "Voltage Applied to TMAG5328 ADJ Pin
"
textbox.
–
Manual R Drop-Down Box Option:
This setting simulates applying a resistor on the ADJ pin by applying
an equivalent DAC voltage that would create the same B
OP
as the input provided into the "Equivalent
Resistance to Apply on TMAG5328 ADJ Pin
"
textbox. Any resistors entered into this textbox are not
programmed into the DAC until you click the
CHANGE VALUE
button.
EVM Operation
16
TMAG5328 Evaluation Module
Copyright © 2021 Texas Instruments Incorporated