buck converter duty cycle control in hspice

Status
Not open for further replies.
B

baltzois

Newbie level 6
Joined
Oct 22, 2009
Messages
11
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Location
belgium
Activity points
1,354
hi,
i have a buck converter and the switch is controlled by a pulse source. I have designed it in hspice . What i want to do is to control the pulse source with variable pulse width but hspice doesn;t give me that option. Can anybody tell me how to change pulse width in time ,and having the Vpp constant??
thank you
 

You have to design the behavioural model of a PWM controller, e.g. from a ramp generator and a comparator.

Or use the simulation model of any real PWM controller of your choice.
 

well maybe i put it in a wrong way...i want to run one transient analysis where the duty cycle changes from 5 to 90% ...will the ramp generator help me??
thank you for your help!
 

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…