Hello Andy, Exactly I have referenced the output VDD to the VSS so VDD=VSS+8 as shown in the attached LTSpice circuit and models below.However as you can see in the attached photo ,The output is not toggling at the same rate as the input pulse.
Its just charging and stays constant.Where did i go wrong?
Thanks.
/g/LTspice/files/Temp/john23/UCC5304_Simplis_Test2.asc
/g/LTspice/photo/294810/3777899?p=Created%2C%2C%2C20%2C2%2C0%2C0
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The power source to the UCC5304's "VDD" pin also should be referenced to its "VSS" pin.? If it is not, imagine what happens when your circuit drives M1 to switch ON.? Its source pin pulls up towards +45 V.? Now you have a problem, because the UCC5304's VSS pin is around +40 V, but its VDD pin is only at +10 V (relative to the same Ground), so it has backwards DC power and it doesn't work.
