The Thule Coaster XT bike trailer comes standard with two red reflectors at the back. There's no tail light. This project adds a LED array to the bike trailer. It serves as tail light and allows for showing warning messages.
I used the HWA YEH SX1308 boost module and set it to 5V output. Somehow the IC got fried and I replaced it with a MPS MP3221. The buck module is the WAVGAT XM1584. It has been set to 3V3 output.
This solution works well for a few minutes, but then the components are getting hot and the modules repeatedly enter a thermal shutdown state.
This solution draws about 1.7A from a 3.3V power supply.
Adding an MBRS240L schottky diode after the 3V3 output of the LDO reduces the voltage to the LED array to 2.96V. This reduces current consumption by about 500mA.