here is my design to have a look at. It was taken from an app note 1:1. Little diff. for the Output voltages, but no Focus here. I do not get any negative voltage out of this device. The upper Regulator works best! Changing R9 and/or R11 and/or R10 does NOTHING. I do not get any VREF (1.6V) out of that chip. Changed the ADP 2 times - no result. Play around with values for COMP2 and L4 (up to 15µH has again no result. Play around with CR3 - no voltage on Output anyway.
Did mesurements on pcb, no Errors to discover...
Need direct Support from an ad engineer to sent complete files (include pcb-data)!
What is the Problem here?