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BOOSTXL-BUCKCONV: Inductor current delay in BOOSTXL-BUCKCONV eval kit



  1. Why this delay varies with respect to PWM ON time?
  2. Is that ok to use single MOSFET or do we need to use both MOSFET always (2nd is complimentary)
  3. Also, we see this delay varies with active load enabled and disabled
    1. With active load (effective RL = 1.5789 ohm) enabled , above delay reduces.
  4. Why inductor current is not increasing linearly, this is important to understand to sense the correct average current.
  5. Also, as we see from image PWM ON time is 1us and we expect inductor current to rise for 1us and this is not happening in HW. Inductor current rises for a smaller time compared to PWM ON time.

These questions are important for us, since we try to rely on reading the average current using only with PWM-ADC synchronization and not with any CMPSS (analog sensing).