User Manual
6 of 17
Rev.1.12
2020-04-02
TLD5542-1 Multichannel evalboard V4.5
User Manual
5.
Connect a micro USB cable from the TLD5542-1 evalboard to the PC (Figure 6)
Figure 6
Connect a microUSB cable from the PC to the evalBoard
6.
Launch the “TLD5542-1_MULTICH_GUI_V1.0.xlsm” to execute the excel GUI ( Figure 7 )
Figure 7
TLD5542-1 Excel GUI V1.0 screenshot on communication established
7.
Connection cell will turns green (Figure 7) on the GUI if the right COM port is selected
8.
Select desired load current and duty cycle and press “Send Configuration” button
9.
LED load will be powered with selected configuration
Note:
Due to the schematic implementation, if POS is ON, then the maximum possible duty cycle on LB/HB is reduced by
the POS duty cycle + load change time (duty cycle losses: Figure 8). The software automatically increases the
LB/HB current to keep average current equal to the requested current, so peak current could be different than the
requested one. During LB/HB+POS scenario, POS duty cycle has to be < 10% in order to minimize LB/HB current
increase.