I would like to use the TPS62163 with Input Power 6-17V and 500mA-900mA with 5V Output (for sensors). I'm expecting quite a lot of noise. Noise reduction is far more important than transient response.
At the moment i have the following components:
Murata Multilayer Ceramic Capacitors MLCC - SMD/SMT 10uF 25Volts 10% GRM31CR71E106KA12L
Kemet Multilayer Ceramic Capacitors MLCC - SMD/SMT 10volts 100uF 20% C1210C107M8PACTU
Coilcraft Fixed Inductors Power Inductor 3.3 uH 5 % 2.3 A1812PS-332JLB
R3 Susumu Thin Film Resistors - SMD 1/10W Regular 100K ohm 0.05% 10ppm RG1608N-104-W-T1
I have read tps62163.pdf, http://www.ti.com/lit/pdf/SLVA463 and
In the evaluation Guide (SLVU483) there are 3 additional capacitors: (C3 additional Outpu, C4 Additional Input) and C5 (68uF Tanatalum Capacitor).
I don't understand the C5 Capacitor. Is this preferable? May i use the much cheaper
AVX Tantalum Capacitors - Polymer SMD 20volts 47uF 20% ESR=70mOhms TCJX476M020R0070
Capacitor instead the C5 68uF Tantalum?
May i improve the LC filter if i replace the 100uF Ceramic with an Tantalum and ceramic in parallel? For example 100uF tantalum and 10uF Ceramic?
Thank you very much for help and education!