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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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?
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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.
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.
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.