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  • RE: UCC2897A: UCC2897A Line Over Voltage Shutdown Issue

    Hi, In the EVM, the CT is also used for hiccup OCP from LineOV shutdown so not for OVP.

  • RE: UCC2897A: UCC2897A: Application Report SLUA672

    Hi, As no communication for a long time, I assume the issue is resolved. I will close this thread and if you need additional support please re-open this thread or open a new thread.
    • Answered

  • UCC2897A: UCC2897A Line Regulation Issue

    Resolved
    Part Number: UCC2897A Other Parts Discussed in Thread: TL431 Hello There, I'm using UCC2897A for active clamp dc-dc, where facing an issue of line regulation >10% which is very high. I would like to ask if that can be resolved with stabilizing…
    • Resolved

  • UCC2897A: UCC2897 Application and EVM-48V150W Power topology introduction

    Part Number: UCC2897A Other Parts Discussed in Thread: UCC2897 目前專案是依據 TI 提供的 EVM-48V150W 設計，今天嘗試第一次開機，發現 CS(current sense)pin 於開機瞬間有超過 12V 的電壓產生，是否因此使 UCC2897 自行保護 (CS pin 超過 0,5V)? VIN(54V) 與 VDD(11V) 都有電壓存在，可正常供給 IC 使用。 如下紅色圈圈處會示波器量測點最下方為量測波形 (maximum 12V) ，請協助分析無法開機的原因…
    • Answered

  • UCC2897A: Isolation transformer selection/design

    Resolved
    Part Number: UCC2897A We plan on using the UCC2897A IC for developing an active clamp forward isolated converter for a project of ours. I would like to open this thread to get help on selection/ design of the isolation transformer for the converter. I…
    • Resolved

  • UCC2897A: Open-loop Small-Signal Measurement Controller Configuration

    TI Thinks Resolved
    Part Number: UCC2897A Hi TI-Team, I am currently designing Active Clamp Forward Converter with your named controller for open-loop small-signal measurement. I would like to know if it is sufficient to connect pin-9 (CS) with capacitor Cf to the ground…

  • UCC2897A: PMP5124 EVM spike issue

    TI Thinks Resolved
    Part Number: UCC2897A Hi Sir, we test the switch phase and found the spike to be very high on PMP5124 EVM board, is there any way to improve? or have any suggestiom for us? After our checked the PMP5124 EVM, and then found the same issue with (Q3) VDS…

  • UCC2897A: Active Clamp Converter Clamp Capacitor Voltage

    TI Thinks Resolved
    Part Number: UCC2897A Other Parts Discussed in Thread: UCC2897 , Hello, II made an active clamp design using UCC2897. But the voltage of the clamp capacitor is not what I want. It should be like n_n_n, but it takes a shape like -,^-,^. In other words, the…

  • UCC2897A: PM8861 based design - transformer inductance value

    TI Thinks Resolved
    Part Number: UCC2897A Hello, We want to use the PM8861 schematics in our Isolated active clamp forward power supply board design. Main concern is on the transformer and magnetic inductance selection. Our specification : Vin1 range :18V to 72Vdc Vin2 range…

  • UCC2897A: Detailed Comparison of UCC2897 Vs LM5026

    TI Thinks Resolved
    Part Number: UCC2897A Other Parts Discussed in Thread: LM5026 Hi E2E Team, I am working on one AC- DC power supply development which has the requirement of AC I/P range is from 90-130VAC and O/P of 5V/50W. we have a high efficiency (>90%) requirement…

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