Analog Devices MAX77859 Manual page 11

MAX77859 Evaluation Kit Evaluates: MAX77859 (WLP)
Figure 11. Configuration Tab—Fault Interrupt and Mask Section
The Output Voltage Configuration section (Figure 12) configures the EV kit IC's output voltage. The output voltage is
changed by adjusting the internal reference voltage. Drag the slider to the desired internal reference voltage (or output
voltage) and click Write to change the output voltage. Clicking Read returns the programmed internal reference voltage
(or output voltage) to the GUI.
To make evaluation easier, the GUI software displays the corresponding output voltage value in the Output Voltage
textbox based on the value in the Internal Reference Voltage slider. To obtain the correct value, check the Internal
Feedback or External Feedback checkbox corresponding to the EV kit configuration. For external feedback
configuration, enter the chosen feedback resistor values in the Top Feedback Resistor and Bottom Feedback Resistor
text boxes to allow the correct calculation of the corresponding output voltage to be displayed on the GUI software.
Note: Changing the Internal Feedback or External Feedback checkboxes (Figure 12) does NOT change the feedback
configuration on the EV kit. It is only for calculating and displaying the correct output voltage value on the GUI software.
If you wish to change the EV kit's feedback configuration, see the EV Kit Hardware Output Voltage Configuration section
for details.
Figure 12. Configuration Tab—Output Voltage Configuration Section
The Output Current Limit Configuration section (Figure 13) configures the EV kit IC's output current limit (available
only on MAX77859A). Drag the slider to the desired output current limit threshold and click Write to apply the change.
Clicking Read returns the programmed output current limit threshold to the GUI.
Figure 13. Configuration Tab—Miscellaneous Configuration Sections
The Miscellaneous Configuration sections (Figure 14) show the remaining register settings of the MAX77859. Use
these sections to control internal compensation resistance, switching frequency, switching current limit, POKB/INTB pin
function selection, forced-PWM mode, and output voltage change slew rate (using the internal reference voltage DVS
slew rate). Refer to the MAX77859 IC data sheet for more information on each available setting. Click Read to obtain the
setting stored on the IC and click Write to apply new settings to the IC.
www.analog.com Analog Devices | 11