As you can see, the VCC pins of the two GaNs both come from the VDD in the upper left corner, but they have different reference GND, so how are the two GaNs powered?
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As you can see, the VCC pins of the two GaNs both come from the VDD in the upper left corner, but they have different reference GND, so how are the two GaNs powered?
Hi Xia,
When Q1 turns on, C17 is charged through boot strap diode D7. This is a standard boot-strap bias circuit for high-side drivers.
thanks,
Brian