Hi all,
I selected the L6981C50DR for my DC DC buck converter with the following external components and schematic for my application:
- Cin: GRT31CR61H106KE01L Multilayer Ceramic Capacitors MLCC - SMD/SMT 10 uF 50 VDC 10% 1206 X5R AEC-Q200 RoHS Compliant
- CinA: GCM31CR71H105KA55L Multilayer Ceramic Capacitors MLCC - SMD/SMT 1 uF 50 VDC 10% 1206 X7R AEC-Q200 RoHS Compliant
- CvCC: same as CinA
- CBoot: GRT188R71H104KE13D Multilayer Ceramic Capacitors MLCC - SMD/SMT 0.1 uF 50 VDC 10% 0603 X7R AEC-Q200 RoHS Compliant
- L: MSS1038T-333MLC Power Inductors - SMD 33uH Shld 20% 2.3A 93mOhms AECQ2
- Cout: GRJ32EC71E226KE11L Multilayer Ceramic Capacitors MLCC - SMD/SMT 22 uF 25 VDC 10% 1210 X7S
My system is powered by a smart battery and I want to use the converter to convert the typ 12.8V from the smart battery to 5V to then feed it to the esp32-c3-devkitm-1. Experimental values showed that the output current is at around 120mA with spikes close to 300mA, I used Iou_max = 500 mA in my calculations to determine the capacitance for the input and output capacitors and also the inductance.
Now I am proceeding with the layout of the PCB on which I will assemble all the parts, could you please suggest a guide or do you have some advices regarding the desing of the PCB?
I am new to this field and especially power modules design area, any remarks or advices would be highly appreciated.
