Hi all,
I've done a TPS61200 based design, the schematic is the one you can see in the datasheet on page 15, the PCB layout is based on the TPS61200 EVB. I'm quite happy with my design except a strange behaviour of the startup voltage.
If I ramp up Vin from 0V to 1V the TPS61200 starts at 0.8V. Now I ramp down from 1V to 0.2V and the TPS61200 stops operating at 0.3V. If I ramp up again (from 0.2V) the TPS61200 starts at 0.5V (like the datasheet says). If I ramp up again from 0V the TPS61200 starts always at 0.8V (which is too high for my application).
Any hints on this?
Regards
Thomas