SLVSE46A November 2017 – January 2018 TPS65680
VGH, VGL1 and VGL2 input supplies are monitored and validated against a fixed threshold. Only if all three supplies are valid, the internal level-shifter power-good (LSPG) signal is asserted and the level-shifter output stages can be enabled. If any of the rails encounters a fault during normal operation (ACTIVE mode), the sequencer is stopped and the panel discharge sequence is initiated to prevent damage to the panel. Note that the monitoring circuits cannot be disabled. If only one VGL supply is used, VGL1 and VGL2 inputs must be shorted together.