dear
Our products in the use of the power of the TI chip TPS5450DDA problem encountered in the process of batch production can work normally, the failure phenomenon is: equipment at room temperature is normal, part of the device at low temperature (+ 5 ℃ ~ 20 ℃), the output power will not be normal, after finding found capacitor C5, partial capacitance will cause the power circuit output is unusual, but send this part to replace the fault capacitance manufacturer analysis conclusion capacitance itself is normal.Therefore, we would like to ask whether there is any problem with our design circuit during the design of the power chip TPS5450DDA.Are there any special requirements for capacitor selection in the circuit?
Attached are the parameters, specifications and models of capacitors used in our circuits at present:
C5 patch capacitor 100NF /0402/±10%/50V X7R GRM155R71H104KE14D MURATA
C1 patch aluminum capacitor 100uF/35V/8mm×10.2mm/±20%/ aluminum capacitor VEV107M035S0ANG03K zhibao
any advice？thanks in advance
