Current Mode Control And Voltage Mode Control

[jegandren]

HI ALL,

Can anyone suggest me a PWM IC for current mode control and voltage mode control...that is used in a half bridge SMPS.

 

[luka]

Hi

Check Uc 3848, it is current cont.... some of the are both voltage and current, but you must know what you want, is that peak control, average,...Use google....

 

[megajocke]

Peak current mode and standard half bridge are not compatible without modification. Look at this for a solution:
http://www.fairchildsemi.com/an/AN/AN-7531.pdf

Voltage mode chips: TL494, SG3525

 

[jegandren]

Hi

Check Uc 3848, it is current cont.... some of the are both voltage and current, but you must know what you want, is that peak control, average,...Use google....

thank you . actually what i want is a peak current mode control.

 

[megajocke]

Then you will need a balancing winding, check out that application note from Fairchild for an example how it can be done.