Please review schematic for TPS65150 circuit;
Note the rework for the 2nd stage of the VGH circuit connecting to VSW.
Need AVDD = 8.2V, VGL = -13.0V, VGH = 15.0V (no VCOM)
I have 2 stages for both VGL & VGH to achieve the required voltages.
When powering up, AVDD reaches 8.2V, but VGL never reaches -13V, it gets to ~7.2V for a short time and then the part shuts down.
I have dummy resistor loads on the outputs for minimal current. (no LCD connected)
What could the issue?
