Class D amplifiers have very little phase shift

Too many diagrams to post here, so I just blogged it:

https://inatinear.blogspot.com/2020/02/class-d-amplifiers-do-not-have-horrible.html

The 20 degrees at 2 kHz argument is bunk.

erik_squires02-24-2020 4:20pm

imhififan Details Discussions Posts This discussion Message User 2,209 posts 02-24-2020 at 06:13pm Copy Comment URL Report Comment Edit Delete @erik_squires Would you please Xsim with a 1mH inductor in series to your speaker and also with a 10uF capacitor parallel to your speaker and show us the result?
erik_squires OP Details Discussions Posts This discussion Message User 16,235 posts 02-24-2020 at 06:27pm Copy Comment URL Report Comment Edit Delete @atmasphere Thanks for the vote of confidence!! @imhififan Is that typical for a Class D stage??
imhififan Details Discussions Posts This discussion Message User 2,209 posts 02-24-2020 at 06:31pm Copy Comment URL Report Comment Edit Delete I don't know, just based on this https://1.bp.blogspot.com/-Ni37SFEN2MQ/XlP4XBgOSjI/AAAAAAAAMzk/L8hslF5zwbIQoO_EyctCbn5gWvDOwnyBQCLcB...
erik_squires OP Details Discussions Posts This discussion Message User 16,235 posts 02-24-2020 at 06:38pm Copy Comment URL Report Comment Edit Delete 1 mH sounds very very high, isn't it?
erik_squires OP Details Discussions Posts This discussion Message User 16,235 posts 02-24-2020 at 06:39pm Copy Comment URL Report Comment Edit Delete @imhififan I wrote this: The actual values are irrelevant for the purposes of this discussion. I meant to say that I just picked whatever XSim uses for the defaults. Best, E