• LT8645 Maximum output power

    Hello,

    I need to design a buck converter with the following parameters:
    - Vin = 53V
    - Vout = 50V
    - Iout = 4A

    The LT8645 or LT8646 seem to be a good choice. However, in the DS, there is no exemple of a circuit with an output power of 200W (maximum is around…

  • RE: Difference between LT8645S and LT8645S-2

    Hi Jambhumalamal

    BST cap is needed for driving of Top MOSFET inside 8645-2. It is a boost capacitor, you should use min recommended value in datasheet for correct switching of this MOS.

    IntVCC cap is for internal supply of IC (digital part, gate drive…

  • LT8645s parallel circuit

    Hello,

    Are there some methods to use  LT8645s by parallel power circuits?

    I know that LT8646s can be connected in parallel to the same output. 

    But LT8646s's stock is out. And i have no enough time.

    So, i'll try to make a paralleling by LT8645s. 

  • LT8645S-2 BST

    LT8645S-2 datasheet says "BST (Pin 11): This pin is used to provide a drive voltage, higher than the input voltage, to the topside power switch."

    What's the voltage level on BST?

    Thanks.

  • RE: INTVCC_UVLO value of LT8645S

    Hi,

    I have trouble Both LT8620 and LT8645S. I also confirmed similar problem.
    First of all , I confirmed INTVCC waveform of LT8620 that reached UVLO when It's reverse voltage.
    Second of all, I confirmed value of INTVCC UVLO with datasheet of LT8620…

  • heating track between SW and inductor for LT8645S-2

    Hi,

    I have troubling problem of temperature.

    I design 3 prototypes with the 2 LT8645S-2 on each card.

    With proto 1 and 2, I don't have problem.

    With the proto 3, the track between SW and the inductor heat until 120°C at 20 °C ambient for the 2 composants…

  • LT8645S

    在这个芯片应用过程中,此芯片总是不知原因的损坏,目前我们开发了5套样机,已经损坏了将近20只,请大神们指点一下,到底这个芯片本身的问题还是说应用有问题,基本都是按照芯片资料的电路进行设计的

  • LT8645-2

    Hello,

    I have a big problem with my BUCK LT8645-2 converters.

    For this, I need a converter with an output voltage of 5V for a Raspberry Pi with its screen. But also, a converter with an output voltage of 9V to supply all of the EN pins of the different…

  • LT8645-2 problems

    Hello,

    I have a big problem with my BUCK LT8645-2 converters.

    For this, I need a converter with an output voltage of 5V for a Raspberry Pi with its screen. But also, a converter with an output voltage of 9V to supply all of the EN pins of the different…

  • Thermal resistance (θ-JA) of LT8645S-2

    Hi,

    Could you please provide the Thermal resistance value, Junction to Ambient for LT8645S-2.

    The package is LQFN 32-Lead. Value is not available in datasheet.

    Thank You.