Lt spice bode plot phase axis

dr pepper

Well-Known Member

Most Helpful Member

• Apr 23, 2019

• #1

I used info from this url https://www.analog.com/en/technical...-steps-in-generating-a-bode-plot-of-smps.html
So i can plot the gain & phase of an smps, or other circuit for that matter.
I got it to work, but unlike the url my plot doesnt show phase in degrees, my vertical axis shows K, 0.5K at the bottom and 1K at the top.
I presume 1K is 360 degrees.
Can I force Ltspice to show degrees?

 

unclejed613

Well-Known Member

Most Helpful Member

• Apr 26, 2019

• #2

if i'm guessing correctly, isn't that the point on the .measure statements that end with "sin(360*time*freq)" and "cos(360*time*freq)" ??

 

alec_t

Well-Known Member

Most Helpful Member

• Apr 27, 2019

• #3

dr pepper said:

I presume 1K is 360 degrees.

Click to expand...

I would assume 1k is 1000dB if on the left-hand vertical axis, or 1000Hz if on the horizontal axis.

 

dr pepper

Well-Known Member

Most Helpful Member

• Apr 27, 2019

• #4

Yes unc.
Looking closer the right axis shows K then a degrees symbol, so it is phase, I dont think it'd be a 1000 degrees, K might mean constant.

 

crutschow

Well-Known Member

Most Helpful Member

• Apr 27, 2019

• #5

Post a clip of your results.