Hi
Unfortunately TI does not have a simulation model for the UCC25705 but similar functionality for simulation can be provided by the UCC38C43 device and it hasTINA and PSPICE simulation models available.
Regards
Peter
Part Number: UC2823A Other Parts Discussed in Thread: UCC38C43 , UC3842 I implement UC2823A on a prototype and starting the moke up.
As I want to use it in voltage mode, I connect RAMP with CT.
I get an output signal at the expected frequency (200kHz…
Hi CCphi,
UC3843 devices is 8.4 V (ON) and 7.6 V (OFF), and operate to duty cycles approaching 100%. So UC3843 device can be used for the required power with boost topology. You also can use UCC38C43 device, an enhanced BiCMOS version with pin-for…
Hello Ronald,
This part has a maximum switching frequency of 500kHz and the minimum duty cycle you can obtain is related to the switching frequency you are using. Pulse widths lower than this cause the UC3843 to start missing switching cycles and you…
Hi Cao,
I think you could see TI's UCC38C43 which has 50uA typical startup current also.
The TI's UCC38C43 , UC3843 and other vendor's XX3843 are pin to pin compatible however they have small difference in particular items such as startup current, Vdd…
Hi Mark,
Here are my suggestions.
1) and 2)Please refer to slua257 for the comparisons between UCCX8C4X and UCX84X, and the differences of parts of UCCX8C4X families
www.ti.com/.../slua257.pdf
UCCX8C4X is pin to pin compatible with UCX84X. Below…
Other Parts Discussed in Thread: UC3843 , UCC38C43 I am not able to run the simulation model of UCC38C43 in SIMETRIX. Currently, I am using UC3843 for my analysis but it has large propagation delay and not suitable at high frequency. I need to replace…
Calum,
I did a parametric search and tried to match all of the features of the UC3843 and I came up with the UCC38C43 (a line of parts was developed to be pin2pin compatible with the UC384x line).
The datasheet has a note about using soft-start…
