2024-04-01 10:02 PM
hi,
I set the charge boot capacitor time with 100ms and the duty with 50%.
the picture is below,
and I captured the waveform by the scope. low side (green,16V from drive circuit),high side (red, 3.3V from MCU). the low side boot time is 125us. why is not 100ms?
2024-05-07 05:53 AM
Hello @tonyqian926,
Please, have a look the following application note.
These Charge Boot Capacitor settings concern the phase on which only Low Side Switches are driven for capacitor charging before going to START phase.