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  • LM51551: Part2 : Question about measured loop phase of LM51551 flyback converter

    Part Number: LM51551 Other Parts Discussed in Thread: LM5155EVM-FLY , Hi, This is a follow-up to the following thread, because I am currently not able to reply to the original thread due to a posting issue. Original thread: https://e2e.ti…
    • Answered

  • LM51551: LM51551 Goes into overcurrent at low loads.

    Resolved
    Part Number: LM51551 I have designed an isolated flyback converter around the LM51551. Both input and output voltages are 24V with a maximum output of 1A. I found that the IC goes into hiccup recovery mode when it reaches the desired output voltage and…
    • Resolved

  • LM51551: CS waveform question in LM51551

    Part Number: LM51551 Tool/software: Hi Sir, Our customer is testing their board and they can't get enough current at the output load: There is 56V at output with no load, and the output is drop (protect?) when the current load is more than 500mA.…

  • LM51551: Combining the LM51551, DAC, and LMP8646 for Output Voltage Control and Current Limiting

    TI Thinks Resolved
    Part Number: LM51551 Other Parts Discussed in Thread: LMP8646 Hi expert, I am designing an application for current limiting with a capacitive load, where the capacitor voltage can be controlled. The key objectives of this design are: Programmable…

  • LM51551: Boost IC

    Part Number: LM51551 Looking for an boost IC to provide the following: Vin = 16Vdc to 35Vdc Vout = 48Vdc Iout = 30A SWfreq = =/> 500KHz AEC-100 or AEC-101 certified Operation Temp. -40C to 125C nice to have protective features built in the…
    • Answered

  • LM51551: How to custom hiccup mode behavior in LM51551

    Resolved
    Part Number: LM51551 Tool/software: Hi, We are currently evaluating the LM51551 for our application and have a question regarding the hiccup mode behavior. According to the datasheet, LM51551 initiates a hiccup mode restart after detecting 64 cycles…
    • Resolved
    • Answered

  • LM51551: flyback application

    Resolved
    Part Number: LM51551 Other Parts Discussed in Thread: PMP22764 , Hi Team, Based on the PMP22764 reference design, we would like to use the LM51551 series to design the following spec: Vin=9v~36V, Vout=54V/ Pout 40W, and need isolate, if we follow…
    • Resolved

  • LM51551: zener diode question in LM51551's isolated flyback design.

    TI Thinks Resolved
    Part Number: LM51551 Other Parts Discussed in Thread: PMP22764 , Tool/software: Hi Sir, We've ever ask LM51551's question earlier and they check PMP22764's design as reference. Customer want to confirm what's the D7 function in PMP22764, and if…
    • Answered

  • LM51551: Isolation bridging ceramic capacitor size

    Resolved
    Part Number: LM51551 Other Parts Discussed in Thread: LM5155 Dear Support Team In the the application note "How to Design an Isolated Flyback Using the LM5155" SNVA866A, a bridging ceramic capacitor between primary and secondary side is used (see C28…
    • Resolved

  • LM51551-Q1: Can LM51551-q1 handle 15V X 2.5A= 37.5W output?

    TI Thinks Resolved
    Part Number: LM51551-Q1 Hi team, Can LM51551-Q1 support 15V@2.5A output @ VIN=9-18V? If not, please recommend a new suitable device. Target EE is traction inverter. Regards, Sky

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