UC3846N PDF

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The UC control IC provides all of the necessary fea- tures to implement fixed frequency, current mode control schemes while maintaining a minimum. Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull Regulator Positive Output Step-Up, Step-Down, Step-Up/Step-Down DC-DC. The UCN is a Current Mode PWM Controller that provides all of the necessary features to implement fixed frequency, current mode control schemes while.

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Trademarks Privacy Policy Terms of Use. I add the sense resistor, and now the duty ratio can be adjustable. Ask a related question Ask a new question. In reply to Benjamin Lough: The product detailed below complies with the specifications published by RS Components. But I still have two doubts about it.

RS Components Statement of conformity. Our website uses cookies and similar technologies to provide you with a better service while searching or placing an order, for analytical purposes and to personalise our advertising to you. The product does not contain any of the restricted substances in concentrations and applications banned by the Directive, and for components, the product is capable of being worked on at the higher temperatures required by lead—free soldering.

Are you seeing this after adding the sense resistor? And lastly I want to know how to adjust the output of voltage by adjusting the duty ratio? Nov 7, 8: This thread has been locked. Kc3846n Cancel Do you have uf3846n question? All content and materials on this site are provided “as is”. 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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When the open-loop occasion, the duty ratio can not be adjusted by feet 5. In reply to Benjamin Lough:. Use of the information on this site may require a license from a third party, or a license from TI. For UCwhat is the maximum value of duty ratio can be reached? Nov 8, 6: If the dead time is set, but it changed itself, what causes it possibly?

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.

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. This device uses current mode control and relies on sensing the primary side current. And I want to askdoes UC adjust the duty ratio by adjusting the setting voltage of the feet 5? The deadtime is set by Capacitor Ct. TI and its respective suppliers and providers of content make no 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.

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The product does not contain any of the restricted substances in concentrations and applications banned by the Directive, and for components, the product is capable of being worked on at the higher temperatures required by lead—free soldering The restricted substances and maximum allowed concentrations in the homogenous material are, by weight: Ask a new question Ask a new question Cancel.

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

Nov 8, 1: Nov 15, 1: 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.

Texas Instruments UC3846N, PWM Current Mode Controller, Dual 500 mA, 500 kHz 16-Pin PDIP

Price Each In a Tube of Can you send me waveforms? Best Regards, Ben Lough. Nov u3846n, 1: 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 uc384n6 to comply with the Terms of Use of this site.

Page 11 of this slide deck might be useful to you: Ask a related question What is a related question? TI is a global semiconductor design and manufacturing company. You can calculate the dead time from equation 2 on page 12 of the datasheet: Hi Ben Lough, Thanks for your patience.