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  • UC3846: Chip application problem

    TI Thinks Resolved
    Part Number: UC3846 Tool/software: A strange problem occurred on a product. The purple is the DS waveform of the power transistor, and the green is the primary current waveform of the transformer. It is normal under medium and small loads, but when the…
    • Answered

  • UC3846: Help with design for a 1.6KW SMPS

    Resolved
    Part Number: UC3846 Tool/software: Hi there, so I've been using the UC3846 in my half bridge flyback converter design. I've been simulating it in LTSpice however I have had some trouble with the model. I'm trying to run the chip with a switching frequency…
    • Resolved
    • Answered

  • UC3846: Duty regulation and current protection threshold on UC3846

    Resolved
    Part Number: UC3846 Tool/software: Hi, Measuring the parameters you mentioned, I have another question. In the following image, the signals you mentioned in the previous message are shown. In this image, the control is working correctly and we have the…
    • Resolved

  • UC3846: Looking for a single output version

    TI Thinks Resolved
    Part Number: UC3846 Tool/software: The uc3846 is exactly what I need with the EA+ and EA- available as well as current mode control, but I need a single output version so I can work at a reasonably high duty cycle. Does TI have such a chip?
    • Answered

  • RE: UC3846: Control Issues with UC3846 in Push-Pull Converter at Duty Cycles Above 0.5

    Resolved
    I believe we resolved the original post. If more help is needed please post a new thread topic. Steve

  • UC3846: Parallel protector for BMS battery charging.

    TI Thinks Resolved
    Part Number: UC3846 Tool/software: Dear TI team, I have used UC3846 IC for current controlled PWM in my parallel protector for BMS battery charging. Instead of giving an controlled current of 2.2A it is giving 3-3.5A when switching of a_out b_out is…

  • UC3846: Use UC3846 as an H-bridge PWM controller, what is the max duty?

    TI Thinks Resolved
    Part Number: UC3846 As the title suggests, using UC3846 as an H-bridge hard switch, PWM signal drives 4 MOS with a power of 20kw. The problem is as follows: 1. Is the A and B PWM output of UC3846 complementary to pin11 and pin14? If complementary, is…

  • UC3846: Switching to Voltage Control Mode in Push-Pull Converter with UC3846

    TI Thinks Resolved
    Part Number: UC3846 Hello, We are working with a push-pull converter using the UC3846 chip. According to the datasheet, it mentions the possibility of controlling the converter in voltage control mode (see attached image). However, we couldn't find specific…

  • UC2846: Difference between UC2846 and UC3846

    TI Thinks Resolved
    Part Number: UC2846 Other Parts Discussed in Thread: UC3846 Dear TI experts, My customer asked the difference between UC2846 and UC3846. I can only found the difference about operating temperature in comparison table. And my customer said that UC2846…
    • Answered

  • UC3846: The Calculated Frequency And Deadtime Did Not Match The Measured Values

    Resolved
    Part Number: UC3846 Hello, I'm currently work on H-Bridge control and I want to observe frequency by making changes on different resistance and capacitance values in UC3846. However, I noticed there is differences between the values calculated based on…
    • Resolved

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