DS2746K Maxim Integrated, DS2746K Datasheet - Page 7

• Manufacturer Part Number: DS2746K
• Description: Power Management IC Development Tools
• Manufacturer: Maxim Integrated
• Series: DS2746r

DS2746EVKIT
Update Sense Resistor
The sense resistor value used to calculate the current reading is shown in the current section. Left-click on
the Update Sense Resistor button to open the Find Sense Resistor window.
The value of the sense resistor is not stored by the DS2746, but this value is stored on the host computer
to calculate the current flowing across the sense resistor. This value will be remembered each time the
DS2746 EV kit software is started. The user can manually enter the Sense Resistor Value at the top of the
window, or can allow the software to calculate the value. To allow the DS2746 EV kit software to
calculate the sense resistor, simply enter the value of the current that is flowing across the sense resistor
in the Current Forced text box in terms of mAmps. Then left-click the Calculate Resistor button and the
software will determine the value of the sense resistor and put the new value in the Sense Resistor Value
text box at the top of the window. Click OK to accept the new Sense Resistor Value, or Click Cancel to
ignore the changes that were made.
Update Reference Resistors
A known 10K resistor is used to determine the resistance of the Auxiliary Inputs. If the values of the
resistors are not exactly 10K, or if other values are desired for the known resistors, simply left-click on
the Update Resistors button and the Update Reference Resistors window will appear. Simply enter the
correct reference resistance and left-click Update. Once again, this is only a software value, so it is not
stored on the device, but it will be recalled each time the program is started.
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