how many caps required for 3.3V rail for 500ma?

Status
Not open for further replies.
M

mav1234

Junior Member level 1
Joined
Aug 13, 2012
Messages
19
Helped
1
Reputation
2
Reaction score
1
Trophy points
1,283
Activity points
1,407
How much capacitance do I need on 3.3V rail with loading of ~500mA?

I have 22uF caps that I can use.

In general, what is a good rule of thumb on how much capacitance required based on a voltage rail and its current value?
 

It depends to the power supply type, for example if you use a ldo linear regulator like LM2931 for 3.3V you certainly need a capacitor greater than 100uF. It depends also to the load type (low/high frequency, resitive - inductive ecc) and to the load regulation perfomance you need. Be more specific pelase.
 
Reactions: tdf

    T

    tdf

    Points: 2
    Helpful Answer Positive Rating
Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…