1.problem – TPS61163A output voltage is drop.
2.cause – SW voltage is measured OVP level on turn on test with min dimming.
TPS61163 OVP -> latch -> LED off -> smart phone LCD off.
different good waveform. / Please see the attached file.
3.test environment – a. inductor change test
4.7uH -> 10uH / No differences in characteristics.
b. comp cap change test
=> 330nF -> 220nF, 220pF change test
SW is measured OVP level but don’t OVP protection.
4.inquiry– change comp cap affect turn on waveform and shrink latch off of OVP.
but i think not a fundamental solution.
why measured OVP votlage. and have a fundamental solution.