Hi,
We are using TPS65132W to supply LCD panel for +6V and -6V bias voltage, as the LCD specification, it consumes 70mA maximum for both +6V and -6V in all white screen condition.
As the waveform below, when LCD panel is supplied by 2 external LDOs in all white screen condition, the peak current is 79.2mA (Average around 50mA), it looks current consumption is similar to specification.
But, as the waveform below, the LCD panel is supplied by OUTN of TPS65132 in all white screen condition, the peak current is around 110mA (Average around 56mA) and more than TPS65132 output capability.
1. Why there is different behavior compared to supplying by LDO?
2. Is there any side effect if a higher flying cap is used?
3. According to datasheet, the OUTN output capability is 80mA, it is average or peak?
Thanks,
Sam