TPS56637: 4x 22uF output caps, versus 1x 100uF output cap?

Thomas Bewley

Part Number: TPS56637
Is there any compelling reason to not choose a single 100uF output cap, if you can find one at a convenient size/price, instead of using four 22uF caps of the same type in parallel? Similar question on the input stage (one 47uF input cap versus four 10uF caps...). I’m trying to simplify layout.

over 5 years ago

0 Yuchang Zhang over 5 years ago

TI__Mastermind 18510 points

Hi, As you may see, MLCC is recommended, generally 22uf is common value for customer, so reference circuit is used 22uf. That's OK, you can use bigger value to reduce the quantity, but just follow the recommendation table 4 to do it.

Yuchang

Power management

Power management forum

TPS56637: 4x 22uF output caps, versus 1x 100uF output cap?