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    Answered

  • RE: UCC256403: UCC256403

    Resolved
    Hi Shritesh, UCC256403 can support resonant frequency up to 300kHz. Probably you can start with resonant frequency of 100KHz for your first prototype. Regards Manikanta P

  • UCC256403: Burst off period setting

    TI Thinks Resolved
    Part Number: UCC256403 Hi Sir, My customer is designing UCC256403 and want to decide its Cboot capacitor and we see a 150ms burst off period time in datasheet. They have question about burst off period setting time: how to decide the value? 150ms is ok…
    • Answered

  • UCC256403: How the latch of TIDA-010081 reference design work ?

    Resolved
    Part Number: UCC256403 Other Parts Discussed in Thread: TIDA-010081 , Hi team, thanks for your support always. I have a question about latch of TIDA-010081 reference design. TIDA-010081 reference design | TI.com As I know that when latch be happened(OV or…
    • Resolved

  • UCC256403: UCC25640x Simplis Model

    TI Thinks Resolved
    Part Number: UCC256403 Hi, I'm developing board based on UCC256403, in order to well understand the operation. I dowload the simulation model of " CC25640x Simplis Model " from web. It work well as original setup of 380V in 24v vout. But our…

  • UCC256403: UCC256403 maximum switching frequency during startup

    TI Thinks Resolved
    Part Number: UCC256403 Hi Team, Have a good day! I have a question on device UCC256403. I noticed that in datasheet, SS initial voltage provides a freedom to limit the maximum switching frequency during startup. This helps to prevent hard switching due…
    • Answered

  • RE: UCC256403: Are there any conditions other than "OCP3 threshold" to enter OCP3 operation?

    Resolved
    Please Use the design calculator for finding out this RISNS value. For finding the average of ISNS signal, you need to consider both positive and negative sides during HO on. Regards Manikanta P
    • Answered

  • UCC256303: Design Concern of UCC256303 compatible with UCC256403

    Resolved
    Part Number: UCC256303 Other Parts Discussed in Thread: UCC256403 Dear TI, My team is now using UCC256303 as HB LLC controller. I've notice that there's a update version which is UCC256403, one of the major different between them is minimum detectable…
    • Resolved

  • UCC256403: I want to know the variation data of RLL

    TI Thinks Resolved
    Part Number: UCC256403 I want to know RLL variation data and electrical characteristic data. min, max, ±3σ＝？？ Also, if there is temperature characteristic data, I would like it.

  • UCC256403: ISNS polarity is incorrect, but ZCS event does not occur.

    TI Thinks Resolved
    Part Number: UCC256403 When the low-side gate is turned off, the ISNS voltage is normally negative polarity, but there are cases where the positive polarity causes switching to continue without causing a ZCS event. Is this normal operation as an IC? Occurs…

  • UCC256403: FB pin

    TI Thinks Resolved
    Part Number: UCC256403 Hi Sir, My customer have the below questions. 1. What conditions it will turn off the AVDD and internal MOSFET of the FB pin? UCC25640x LLC Resonant Controller Features Brief Overview and Bring up Guidelines 2. The IFB typical…

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