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What is wrong with my double pulse test LTspice schematic? Gate pulse is not getting generated when I connect the gate driver for 800V application. Any connection error?

  • \$\begingroup\$ U2 has its gate shorted to its source. So are you using it for its body diode? \$\endgroup\$
    – RussellH
    Oct 17, 2023 at 11:56
  • \$\begingroup\$ yes for using body diode (free wheeling interval) \$\endgroup\$
    – Andr7
    Oct 17, 2023 at 14:23
  • \$\begingroup\$ What does "gate pulse is not getting generated" mean, exactly? \$\endgroup\$
    – Hearth
    Oct 17, 2023 at 14:39
  • \$\begingroup\$ Input as you can see microcontroller pulse 3.3V but.. at Output B no voltage is coming \$\endgroup\$
    – Andr7
    Oct 17, 2023 at 16:34
  • \$\begingroup\$ Have you tried running it longer than 10us? Maybe like 500ms? You’ll have to delay your PWL pulse too or make it do a forever repeat. The gate driver IC might need some time to “bootup” (i.e. get out of reset). \$\endgroup\$
    – Ste Kulov
    Oct 17, 2023 at 16:58


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