• LTC3871 frequency and phase problem

    The LTC3871 output of the two PWM wave phase is not 180 degrees, and the frequency varies. VFREQ=0.6V, but the output frequency is only about 25K. It will only become 76k after loading, but the phase is still very small.

  • LTC3871 gate driver output damage

    Hi,

    I'm using the LTC3871 in 4 phases configuration to realize a buck/booster 12/24V 100/50A.
    I start to debug the board from the boost mode but I have many gate driver output damaged just at switch on without any load.
    I have selected the forced continuos…

  • LTC3871 frequency and phase problems

    The LTC3871 output of the two PWM wave phase is not 180 degrees, and the frequency varies. VFREQ=0.6V, but the output frequency is only about 25K. Only after entering the feedback loop will it become 76k, but the phase is still not fixed at 180 degrees…

  • Simulation of LTC3871 by LT-Spice

    Hello,

    I considered Step-up circuit of LTC3871 by LT-Spice.

    However, the circuit of LT Spice does not work normally.

    Can the Spice model of LTC3871 of LT-Spice simulate Step-up?

    Best Regards,

    Yasusuke

  • the  phase and frequency  of  LTC3871

    C387When LTC3871 is used, the two PWMs phase of its output are not constant at 180 degrees in the case of open loop, and the output frequency is not consistent with the set frequency, and the frequency setting resistance is 34K. When working in the closed…

  • LTC3871 : current rating of integrated MOSFET gate-drivers

    Hello,

    Could you please let me know what is the maximum current rating of the integrated MOSFET gate drivers in LTC3871 (e.g. for a  DRVCC ~10V) as I can't seem to find this info in the datasheet? 

    Is it equal to DRVCC/TG pull-up on-resistance = 10V…

  • LTC3871: Is it save to use the SS Pin for Voltage tracking?

    Hello,

    I am using the LTC3871 in buck mode. I would VOUT to track VIN/2 if VIN falls below a certain threshold.

    I am wondering if it is save to use a voltage divider from VIN to GND to set the voltage on the SS pin to achieve this behaviour.

    Since the…

  • 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…

  • RE: Multiphase Synchronous Buck

    The LTC7810 is the best choice (the LTC3871's 100V max input voltage is too close to your 100V requirement and the LTC3871's 34V output limit is less than your 51V requirement). Four LTC7810's can be used together for an 8 phase supply.