Other Parts Discussed in Thread: TPS62840
Hi,
I am using TPS82740B in a new design. On page 21, section 10.2.2.2, it says "Care should be taken that the total effective capacitance present at the output does not exceed 10µF in order to guarantee loop stability." The microcontroller that I'm using calls for a total of about 15uF of distributed decoupling capacitance.
Does the sentence in the datasheet refer only to output capacitors placed right next to the TPS82740B, or will the loop stability be affected by my microcontroller's decouping caps? If the microcontroller is only a few centimeters away from the TPS82740B, will the parasitic power plane inductance between the regulator and the micro be enough to mitigate this issue?
Thanks,
John