Hi Team,
Our customer designed a power supply using TPS63802DLAR based on the Webench simulation in the link below.
However, he didn't find the original coil L1 TDK NLCV32T-R47M-PFR so used JSHC0520-R47M instead.
Sometimes the TPS63802 burns for no apparent reason. The maximum load current is not more than 120mA.
Our customer would like to know if the JSHC0520-R47M coil is suitable for this application. He also wants to confirm what could be the reason that the chip burned.
Here are the schematic diagram and PCB layout
Regards,
Danilo