Hi.
We have some TPS54360 failure recentry.
It was short circuits failure at TPS54360.
We designed TPS54360 circuits following condition.
VIN=42V
VOUT=24V
The input decoupling capacitors are C1(47uF/50V) and C2(2.2uF/50V) .
C1(47uF/50V) is aluminum electrolytic capacitors.
C2(2.2uF/50V) is MLCC(GRM21BB31H225KA73@murata).
However, C2 decreases effective capacitance by DC bias effect.
It down to about 0.22uF at 42V.
According datasheets,
"The TPS54360 requires a high quality ceramic type X5R or X7R input decoupling capacitor with at least 3 μF of
effective capacitance. Some applications will benefit from additional bulk capacitance. The effective capacitance
includes any loss of capacitance due to dc bias effects."
Is our circuits not problem?
In this case, in some case does TPS get excessive heat?
Regards,
