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  • LM27402: Designing an Inverting Buck Converter

    Resolved
    Part Number: LM27402 Hi Team LM27402 to replace ISL6420B Can the same circuit be designed using the circuit diagram below?
    • Resolved
    • Answered

  • LM27402: check RFADJ value in FSW parameter

    Resolved
    Part Number: LM27402 Hi, can you check if the RFADJ value in FSW parameter is correct? I used the formular in chapter 8.1.8 (page 23): RFADJ=(100/((fsw/100)-1))-5 and got 4.52KOhm, 20KOhm and 82.72KOhm for the fsw: 1150, 500 and 214KHz. Regards, Holg…
    • Resolved

  • LM27402: temperature rise

    TI Thinks Resolved
    Part Number: LM27402 Hi Team, Good day. I am posting this inquiry on behalf of the customer. "I like to get important feedback related to the temperature rise as I asked. Without going a complex thermal models/simulations we want to see basic and 1st…

  • LM27402: Chip failure at hot swap

    Part Number: LM27402 Dear TI team I used an LM27402SQ/NOPB to design my buck converter and faced a weird problem which I shared here ( e2e.ti.com/.../lm27402-how-much-current-can-vin-pin-handle At that time I was told that the problem may have arisen due…

  • LM27402: LM27402 is damaged after few hours of working

    TI Thinks Resolved
    Part Number: LM27402 Hi, Continuation of Startup hiccup with 12V to 1V @ 14A regulator desgin , We gone ahead did simulation and implemented the changes. On some of the boards we are facing LM27402 device is getting damaged after few hours of working.…

  • RE: LM27402: Strange behavior in the cold

    closing working directly offline
    • Answered

  • RE: LM27402: WEBENCH crossover frequency listed in customize tab don't match bode plot simulation

    Resolved
    Hi Lilly, Thanks for reporting this, We have fixed the issue for LM27402, Tested Default design on internal servers on WEBENCH. Phase margin and Cross over are as shown below. This change will be available on ti.com by next WEBENCH release(Tentatively…
    • Answered

  • LM27402: Switching frequency not equal to what is set through Rfadj

    Resolved
    Part Number: LM27402 Hi, Continuation of thread LM27402 is damaged after few hours if working , We have noticed switching frequency of LM27402 is not equal to what we set through Rfadj. As per the design we have set switching frequency to 700KHz for a load…
    • Resolved

  • LM27402: HS & LG gate voltage limit on LM27402

    TI Thinks Resolved
    Part Number: LM27402 Hi, May I have the gate voltage limits for both HG & LG pins on LM27402? These are not listed in the datasheet. Thanks, Christina

  • LM27402: How much current can VIN pin handle

    TI Thinks Resolved
    Part Number: LM27402 Other Parts Discussed in Thread: , TINA-TI , TPS24771 Hey TI team, I am using LM27402 for a 5V 20A circuit. I wanted to know what is the significance of Rin and how its value is decided? How much input current can the Vin pin handle…

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