Hi team,
My customer uses the LMR16030 as a 12V input, 3.9V/2.6A power supply.
Now he finds when using wound metal inductor(AMRU00060630100MA1) the IC and the inductor will both heat badly, but change to normal wire wound inductor(SLF12575) there will be no thermal issue. The inductor current is tested and they are basically the same. The test waveform is attached below, and the datasheet of both inductor are also attached.
Can you help me analyze the reason why the wound metal inductor can cause the IC thermal issue? The inductor value is the same to 10uH.
Thank you
Normal wire wound inductor current waveform(SLF12575), no thermal issue:
Wound metal inductor current waveform(AMRU00060630100MA1):