Tool/software:
Hi Sir,
My client uses TPS65105 currently testing 50 pcs TFT, 2 pcs will display normally when power on for the first time, but then turn off and then turn on again,
the LCD will display abnormally, white screen.
At this time, the customer measures that the voltage of AVDD (10.4V) will drop.
20240925_除細動 LCD立ち上がり不良 波形 20240917.pdf
But this 2 pcs I tested here are normal. (We used AX5510 for testing).
There is no phenomenon reported by customers after power on/off more than 10 times.
The electrical characteristics of my LCD panel are as follows:
Please help to check whether there is any problem with the schematic design of the customer's TPS65105?
It is possible that the IADD current output is not enough, causing the voltage to drop?
LCD周辺回路 AVDD 20241023.pdf
