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UCC5310: Questions on External Gate Resistor Design Guide App Note

Part Number: UCC5310

I'm trying to debug some noise I'm seeing on a half bridge and using one of TI's technotes, and I'm a bit confused: https://www.ti.com/lit/an/slla385a/slla385a.pdf?ts=1610328216837

I'm trying to replicate the example, and the math isn't working for me.  Seems like it should just be algebra, but I'm not getting anywhere near 7 Ohms (or really 8.4 Ohms).  I'm guessing I'm not defining  ω correctly?  Or it may be my units?  I get Ls as 0.0000002148632291

Can you please help provide help on how the math works in the example to get ~8.4 Ohms?

Example

Pi

3.141592654

Ring Freq. (Fr)

3,570,000

(2PiFr)^2

503148484525775

Ciss

0.00000000925

Ciss*(2PiFR)^2

4654123.482

Ls

0.0000002148632291