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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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. 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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Hi Ben Lough, Thanks for your help. If the dead time is set, but jc3846n changed itself, what causes it possibly? When the open-loop occasion, the duty ratio can not be adjusted by feet 5. I an confusing how to resolve it?

Hi Jenny, I am not quite sure what is meant by frame-throwing phenomenon. Can you send me waveforms? Mentions Tags More Cancel.

UC3846: Duty ratio of PWM to UC3846

From Texas Instruments, a range of Pulse Width Modulation controllers and associated devices to suit a variety of applications and specifications. COO Country of Origin: The product detailed below complies with the specifications published by RS Components.

Thank you very much! TI is a global semiconductor design and manufacturing company.

If you have a related question, please click the ” Ask a related question ” button in the top right corner. Locked Cancel Do you have another question? Ask a related question What is a related question?

Nov 13, 6: RS Components Statement of conformity. And I want to askdoes UC adjust the duty ratio by adjusting the setting voltage of the feet 5?


The isolated-flyback power supply controller provides Constant-Voltage CV and Constant-Current CC output regulation to improve transient response to large load steps.

And lastly I want to know how to adjust the output of voltage by adjusting the duty ratio? Nov 7, 8: In reply to Benjamin Lough: We are glad that we were able to resolve this issue, and will now proceed to close this thread. Nov 15, 1: No license, either express or implied, by estoppel or otherwise, is granted by TI.

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Ask a new question Ask a new question Cancel. Hi Jenny, Thank you for your interest in UC I add the sense resistor, and now the duty ratio can be adjustable.

Nov 13, 3: Page 11 of this slide deck might be useful to you: