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.

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The deadtime is set by Capacitor Ct.

UC3846: Duty ratio of PWM to UC3846

In reply to Benjamin Lough: Go to Support forums. In reply to Benjamin Lough:. Nov 15, 7: 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. If you have a related question, please click the ” Ask a related question ” button in the top right corner. TI is a global semiconductor design and manufacturing company.

Ask a related question Ask a new question. Ask a related question What is a related question? Mentions Tags More Cancel. You can calculate the dead time from equation 2 on page 12 of the datasheet: Do you have another question? Nov 8, 1: This thread has been locked. All content and materials on this site are provided “as is”.

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Ask a new question Ask a new question Cancel. TI and its respective suppliers and providers of content make uc38466 representations about the suitability of these materials for 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.

Duty cycle is determined by comparing the output of the error amplifier COMP pin and the ramp signal derived from the current sense pins. If it is not controlled by feet 5by which parameter adjusting?

Hi Jenny, Thank you for your interest in UC But currently I found that UC has a frame-throwing phenomenon at work. HI Ben Lough, Thanks for your reply. The newly created question will be automatically linked to this question.

But I still have two doubts about it. 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.

Menu Search through millions of questions and answers User. Best Regards, Ben Lough. Nov 13, 3: I would suggest adding a current sense resistor such as what is shown on page 11 of the datasheet: And I want to askdoes UC adjust the duty ratio by adjusting the setting voltage of the feet 5?

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I add the sense resistor, and now the duty ratio can be adjustable. Thank you very much! Trademarks Privacy Policy Terms of Use. Hi Jenny, I am not quite sure what is meant by frame-throwing phenomenon. Locked Cancel Do you have another question? Nov 15, 1: This device uses current mode control and relies on sensing the primary side current.

And lastly I want to know how to adjust the output of voltage by adjusting the duty ratio? TI, its suppliers and providers of content reserve the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

Nov 7, 8: Can you send me waveforms? Use of the information on this site may require a license from a third party, or a license from TI. Nov 13, 6: Nov 8, 6: Hi Ben Lough, Thanks for your patience. Content on this site may contain or be subject to specific guidelines or limitations on use. Could you provide some details?

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.

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Ask a related question What is a related question? If it is not controlled by feet 5by which parameter adjusting?

Hi Jenny, Thank you for your interest in UC But I still have two doubts about it. Page 11 of this slide deck might be useful to you: Trademarks Privacy Policy Terms of Use.

Are you seeing this after adding the sense resistor?

This thread has been locked. Content on this site may contain or be subject to specific guidelines or limitations on use. This device uses current mode control and relies on sensing the primary side current. The newly created question will be automatically linked to this question.

Mentions Tags More Cancel. Nov 15, 7: In reply to Benjamin Lough:.

UC3846: Duty ratio of PWM to UC3846

When the open-loop occasion, the duty ratio can not be adjusted by feet 5. Ucc3846 you have a related question, please click the ” Ask a related question ” button in the top right corner. Nov 13, 6: HI Ben Lough, Thanks for your reply. Use of the information on this site may require a license from a third party, or a license from TI.

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Could you provide some details? Nov 15, 1: Hi Jenny, I am not quite sure what is meant by frame-throwing phenomenon.

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Thank you very much! Nov 8, 6: 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 add the uc33846 resistor, and now the duty ratio can be adjustable.

Nov 7, 1: TI and its respective suppliers and providers of content make no representations about the uc386 of these materials for 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.

Ask a related question Ask a new question.

Nov 13, 3: Nov 8, 1: You can calculate the dead time from equation 2 on page 12 of the datasheet: And I want to askdoes UC adjust the duty ratio by adjusting the setting voltage of yc3846 feet 5?

I an confusing how to resolve it?

We are glad that we were able to resolve this issue, and will now proceed to close this thread. All content and materials on this site are provided uc38466 is”. No license, either express or implied, by estoppel or otherwise, is granted by TI. Uc3486 deadtime is set by Capacitor Ct. 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.

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TI, its suppliers and providers of content uc3486 the right to make corrections, deletions, modifications, enhancements, improvements and other changes to the content and materials, its products, programs and services at any time or to move or discontinue any content, products, programs, or services without notice.

I would suggest adding a current sense resistor such as what is shown on page 11 of the datasheet: Can you send me waveforms? Locked Cancel Do you have another question?

Best Regards, Ben Lough. In reply to Jenny Lu Hi Ben Lough, Thanks for u3c846 patience. Ask a new question Ask a new question Cancel. If you have further questions related to this thread, you may click “Ask a related question” below. If the dead time is set, but it changed itself, what causes it possibly? For UCwhat is the maximum value of duty ratio can be reached?