UC3846 PDF

The UTC UC control IC offers all necessary features for accomplishment of fixed frequency, current mode control functions, however it contains the least. UC/7. SLUSA – JANUARY – REVISED MARCH •. Automatic Feed Forward Compensation. •. Programmable Pulse-by-Pulse Current. UC Current Mode PWM Controller. FEATURES. DESCRIPTION. The UC/7 family of control ICs provides all of the necessary features to implement.

Author: Vudojin Tojajas
Country: Cameroon
Language: English (Spanish)
Genre: Science
Published (Last): 16 November 2010
Pages: 473
PDF File Size: 17.59 Mb
ePub File Size: 10.48 Mb
ISBN: 616-3-76792-649-8
Downloads: 82448
Price: Free* [*Free Regsitration Required]
Uploader: Jutilar

We are glad that we were able to resolve this issue, and will now proceed to close this thread. Hi Jenny, Duty cycle is determined by comparing the output of the error amplifier COMP pin and the ramp signal derived from the current sense pins. I would suggest adding a current sense resistor such as what is shown on page 11 of the datasheet: In reply to Benjamin Lough: For UCwhat is the maximum value of duty ratio can be reached?

Nov 13, 3: Are you seeing this after adding the sense resistor?

Hi Ben Lough, Thanks for your help. Nov 7, 8: The newly created question will be automatically linked to this question.


Do you have another question? No license, either express or implied, by estoppel or otherwise, is granted by TI. But currently I found that UC has a frame-throwing phenomenon at work. Hi Jenny, Thank you for your interest in UC Use of the information on this site may require uc38846 license from a third party, or a license from TI.

TI is a global semiconductor design and manufacturing company.

Nov 13, 6: But I still have two doubts about it. TI and its respective suppliers and providers of content make no representations about the suitability of these materials uc3486 any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right.

UC3846: Duty ratio of PWM to UC3846

Nov 8, 1: Menu Search through millions of questions and answers User. You can calculate the dead time from equation 2 on page 12 of the datasheet: Best Regards, Ben Lough.

Nov 15, 7: All postings and use of the content on this site are subject to the Terms of Use of the site; third parties using this content agree to abide by any limitations or guidelines and to comply with the Terms of Use of this site.


The deadtime is set by Capacitor Ct. Duty cycle is determined by comparing the output of the error amplifier COMP pin and the ramp signal derived from the current sense pins. And I want to askdoes UC adjust the duty ratio by adjusting the setting voltage of the feet 5?

Nov 7, 1: This thread has been locked. If it is not controlled by feet 5by which parameter adjusting? Thank you very much!

Nov 8, 6: HI Ben Lough, Thanks for your reply. Content on this site may contain or be subject to specific guidelines or limitations on use. Hi Jenny, I am not quite sure what is meant by frame-throwing phenomenon.

Mentions Tags More Cancel. All content and materials on this site are provided “as is”.