I use TPS53353 to produce 3.3V from 12V in a 16 layer PCB. But TPS53353 do not work.
Could you help me to check the schematic and layout? Thank you very much!
Schematic is the following
L4 is SRP7030-R56FM
the wave test on C135 is the following
And PCB layout of TPS53353 is the following
Could you give me your email? I will send layout data, schematic and waveform to you.
the following is waveforms of VIN, SW node, PGOOD, EN.
8726.HS-K7V2000T_20140320_01.pdf.pdf
You can see schematic in above file. and about TPS53353's output inductor, it's part number is SRP7030-R56FM
made by Bourns.
and the following is layout.
