Compensation for a switching DC-DC converter

Status
Not open for further replies.
J

jawlin2

Newbie level 4
Joined
Jul 24, 2006
Messages
6
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Activity points
1,323
Hi all,

In most papers about switching DC-DC converters, the compensator is designed for CCM, and DCM is not taken into account. Could you explain it? Is it because the compensator for CCM can cover DCM? Thank you.
 

DCM is the same as CCM, except for the idle time.
It need no compensation at the idle time of DCM.

B/R
Edwin
 

DCM is in many cases just a consequence of light load operation. Under normal conditions, the P/S operates in CCM, so that is where you compensate it, although you need to verify stability at DCM.

For flybacks operating in CCM the loop will be much slower, to deal with the right-half-plane zero, so the slow loop will behave very well under DCM. In that sense you can say that the compensation will cover both CCM and DCM.
 

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…