• LTC3892-1 Eval Board

    I'd like to know about  R19/20 value of DC2190A-A.

    Would you tell me the reason these value are 100ohm?

    Because I couldn't find any description about this in the datasheet.

    Hiro

  • lnterleaved LTC3892(交错并联工作的LTC3892)

    Can two or more LTC3892 work in lnterleaved mode?

    多个LTC3892可以交错并联工作吗?

    For example, two LTC3892 are given two external clock signal with 90-degree difference. And all four VFB are connected together; all four ITH are connected togetherall four TRACK are…

  • RE: short circuit protection on buck DC/DC converter LTC3892-1

    Hi mingtian,

    As stated on page 16 of datasheet, there should be foldback current for short-circuit protection. You are building a 500W converter which is not easy to do.  I assume you started by doing your own board. We usually recommend to start with…

  • LTC3892 overheating

    I am using the LTC3892 for dual 9A 36V outputs. I have noticed that using one channel/side of the LTC3892 everything works but as soon as I turn on the other side the voltages start turning on and off and the the LT3892 gets hot. 

    I am powering the chip…

  • LTC3892 gate drive

    I am finding that the LTC3892 appears to be having the high side gate drivers getting killed.  I looked through the datasheet and it does not indicate the drive current that the high side gate drive can source.  

    What is the maximum  and continuous gate drive…

  • LTC3892 for high power buck

    I am trying to use the LTC3892 for a 36V to 29V @ 10A buck application. In this configuration would I need to use an external VCC for the LTC3892? 

    Specifically I have noticed I am starting to brown out the output at around 3-4A @ 30V, then the chip gets…

  • LTC3892-1 in DRVcc=5 configuration has a gate drive current of around 510mA instead of 2A

    I used LTC3892-1 as a 20A output 32V -> 12V DCDC converter. I have the DRVSET set to 50k, so the DRVcc is 5V. The circuit was also simulated in LTSpice and seemed to be correct.

    The configuration is:

    DRVUV = 49.9K (5V)

    FREQ = 54.9k (350kHz)

    GaNFETs…

  • Loop design 环路设计

    Making LTC3892 as an example,  the chip using peak current control. How should the compensation of voltage loop be designed? Specifically, how should the resistance and capacitance of ITH pins be designed?

    以LTC3892为例,该芯片是峰值电流控制,其电压环路的补偿应该如何设计,具体来说就是ITH引脚上接的电阻电容应该如何设计…

  • LTC7802 Parallel Function

    Hi,

    Does this part can do parallel function?

    Like the way LTC3892 do 12V/60A function on demo board?

    By the way, why this part output current ability is only 12A?

    Thanks a lot.

  • RE: 48V to 12V Buck converter with 3KW Support

    Thank you Seth for the response.

    I am referring to LTC3871 , missed mentioning it in my post .  I would like to know about 12 Phase supported by LTC3871 .   I am planning to use LTC3871 in buck mode for 48V to 12V conversion .  I need to support 200A current…