• RE: LT8315 non-isolated application decoupling capacitor

    A ≥100nF BIAS capacitor should be fine. However, bench verification is indispensable. 

  • lt8315 and uvlo implementation

    I would like to implement UVLO with resistor divider connected to Vin. This looks simple.

    But in lt8315 datasheet , (section Protection from Shorted Output Conditions) looks like you use UVLO connected to tertiary
    winding, to protect from shorted conditions…

  • LT8315 issues

    In reply to the discussion :https://ez.analog.com/power/f/q-a/109766/reason-for-lt8315-failure-along-with-output-capacitor

    Inductor Voltage rating :400v

    Switch current limit :270mA

    Again IC failed with same burnt mark after replacing standard inductor…

  • LT8315 doesn't work properly

    Hi there!

    I am using LT8315 as a non-isolated buck converter. The input range is 200-400V, the output is 12V 100mA (max)

    LTspice simulation shows ok in the input range 30V-400V with static load 120mA.

    But actually it works from 30V up to 200V and the…

  • RE: lt8315 Leakage Inductance and Snubbers

    I used for calculation whole oscillation time, for cdrain it is OK because in equation we use ratio between Tring(snubbed)/Tring. For Leak I should use time only one "sinusoid", not whole oscilation time. Than is OK

  • LT8315 non isolated buck application

    I am trying to simulate non isolated buck converter with LT8315 ic given in  datasheet as  application example of LT8315 in LTspice software. the output is not regulated and does not give 12 volts as per given design . could you please tell what could…

  • LT8315. 2 isolated outputs ?


    I am using the LT8315 with the transformer 750316022 as the datasheet sugest.

    I want to know if I can split the output to get 2 isolated outputs.

    Vin = 120V

    The circuit is very noisy and I want to identify why. 

  • RE: LT8315 non-isolated application phase margin

     That is similar to the standard evaluate board. The phase margin is >50 degrees.

    You can measure the phase margin using FRA on a real board, but you need to use differential probes.

    For LTspice:


  • Isolated 5V supply with LT8315 possible?


    I look for a solution with LT8315: up to 310Vac with 5V output.

    Can I use LT8315 for that purpose? Many reference designs are for 12V and above.

  • LT8315 non-isolated application Open/Short test

    Hi,Support team

    We are evaluating the circuit on page 9.

    And I'm trying to do an open/short test for each pin.

    Are there any points that may cause smoke or fire in this application example?

    Best regards,