Hello,
I am trying to power up the TPS65186 epaper power chip but any time I try to power up the rails I get a VCOM fault (INT2 register has bit 2, the 3rd bit, set). I measure voltage on VCOM and it is around 0.5v, which is within the range of -5v to 1v described by the datasheet as OK.
Do I have to run a VCOM setup routine? Is there some way to get this chip to power up? Is there a known good startup routine? We have VCOM tied to both VBORDER and VCOM of the screen, and have tried it with the screen plugged in and without.
-Andrew