Hi Zaim,
You shouldn't need capacitor C20. It slows down the control loop and is one of the root causes of the issue you originally reported.
The control method you implemented has 2 issues:
1) The control topology used around the TL431 is Type-I…
Other Parts Discussed in Thread: UC3845A , UCC38C45 , UCC38C42 I need to have a soft start on my flback controller that utilizes the TI UC3845A. I see the newer BiCmos part UCC38C45 documentation (SLUA257)indicates an implementation with a PNP transistor…
Hi,
TI does not have a TINA model for UC1845A. You see in the UC3845 and UC3845A product folders, we offer a UCC28C45 PSPICE model only. I offered you a UCC28C42 TINA model which is close to UCC28C45 but differing only by UVLO level and 100% vs 50% max…
Part Number: UC2845A Other Parts Discussed in Thread: UC2843A , UC1844A , UC3844A , UC1845A , UC3845A , UC3842A , UC2842A , UC1842A , UC2844A , UC3843A , UC1843A Hi, Team.
Could you tell me how much temperature how much temperature can UC2845A Junction be withstanded…