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5
Graphical User Interface (GUI)
The GUI offers a user-friendly interface to access and modify the STWLC68JRH registers. The same GUI is the
tool, in conjunction with the on-board USB-to-I2C converter, to rely on for eventually tuning the final application.
Figure 6
shows how to change the output voltage of the STEVAL-ISB68RX on-the-fly from the registers page. By
acting on the slider (or directly writing the desired value) and writing the related register, a new value is set.
Note:
Increasing the output voltage may impact on the external components (e.g. proximity to maximum voltage rating
of VRECT and VOUT capacitors) and on some setting (the OVP threshold, for example, could be triggered if not
conveniently adapted to the new operating conditions). Some transmitters may have inherent limitations and
could terminate the power transfer if significant changes in the output voltage are applied.
The GUI also allows to monitor in real-time key parameters by reading the internal ADC channels of the
STWLC68JRH and plotting voltages, current and temperatures.
VOUT voltages, as well as the rectifier output current (ISNS). For further details and a comprehensive description
of the GUI, please refer to the
UM2681 - Rev 1
Figure 6.
Changing of output voltage via GUI
GUI user manual
on
www.st.com
Graphical User Interface (GUI)
Figure 7
shows the behavior of VRECT and
UM2681
page 7/18
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